CN1664182A - Device and method for preparing combined continuous electro-spinning nano fibrous membrane - Google Patents
Device and method for preparing combined continuous electro-spinning nano fibrous membrane Download PDFInfo
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- CN1664182A CN1664182A CN 200510038562 CN200510038562A CN1664182A CN 1664182 A CN1664182 A CN 1664182A CN 200510038562 CN200510038562 CN 200510038562 CN 200510038562 A CN200510038562 A CN 200510038562A CN 1664182 A CN1664182 A CN 1664182A
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Abstract
Kockdown series electricity spin nanometre fiber membrane produce set is a preparation method .The set constitute with series incept net (1), electricity spin unit (2). The metal net lay the facing of a quilt of erect part of series incept net parallel, electricity spin unit lay the face of erect part of series incept symmetry with metal net. Series incept drive by drive roller, move up and down, electricity spin unit keep the distance with series incept net and move landscape orientation. The high polymer liquor is pumped with computation transfusion from liquid tank. And transport to line electricity spin spray, throw the same or adverse direct current to electricity spin spray of close electricity spin unit by high voltage set. The high polymer liquor of spray head sprays silk under the function of electric field, forming nanometre fibre. This method let the nanometre fibre no easy dissipate, nanometre fibre membrane equality well.
Description
Technical field
The present invention is a kind of combined continuous electro-spinning nanofiber film manufacturing device and preparation method, belongs to the technical field of special fibre material preparation.
Background technology
Method of electrostatic spinning has been acknowledged as a kind of simple, effective nano-fiber material technology of preparing.The diameter of electrospinning fibre than the little 100-1000 of fibre diameter that common spinning process obtained doubly and has huge specific area.It not only can be used as the high efficiency filter material, and has wide application prospects in fields such as biomedical material, chemical sensor, protective materials, nano composite materials.
Electrostatic spinning is to make a kind of effective spining technology of polymer nanofiber by apply extra electric field in polymer solution.(US6713011B2 US6743273B2) has designed many nozzle continuous electrostatic spinnings device to United States Patent (USP) for US6616435B2, US6689374B2.The unsettled publication application of Korea S (10-2001-31586) discloses can be by systematically comprehensively melting blown spinning method and method of electrostatic spinning with large-scale production efficiently with produce nanofiber.Chinese patent (application number 02810669.5, publication number CN1511200A) has been studied electric blown spinning legal system and has been equipped with nanofiber.Chinese patent (application number 200310109222.9, publication number CN1546753A) has prepared the multi-nozzle electrospinning device of coaxial compound continuous nano/micron fiber.
Yet, because the nanofiber that obtains of solution electrospinning is to form in the volatilization process of solvent, body is static or move when slow when receiving, and the nanofiber that contains a large amount of solvents of front and back deposition can be sticked together, cause forming porous or atresia film material, rather than fibrous material.The reception body is travelled forward with certain speed.This will cause at the thickness that receives the nanometer fiber net on the body extremely thin again, not reach good serviceability.Therefore in order to improve thickness, must use many shower nozzles, but fixedly the electrospinning fibre membrane material for preparing of electrospinning shower nozzle is inhomogeneous.
Secondly, in the electrospinning process, spray silk downwards to the reception body of horizontal direction as shower nozzle, because electrospinning is a kind of spinning process under the effect of electric field force, very responsive to various disturbances, inevitably small sample perturbations will influence stability of spinning process, the small unstable disturbance of voltage, ambient wind velocity etc. all can cause the shower nozzle instability to eject droplet in the spray silk process, drop contacts the nano fibrous membrane that will cause receiving below with nanofiber on receiving body and cementing point flaw (US6616435B2) occurs, has reduced the production efficiency of certified products.
In the electrospinning process, because the size of fiber is very light at nanometer or submicron order, the fiber that receives on the net is residual an electric charge receiving, and the nanofiber that has like charges that ejected is afterwards had the Coulomb repulsion effect, can cause nanofiber to disperse.
In many shower nozzles electrospinning system, the nanofiber that peripheral shower nozzle ejects causes the nanofiber that peripheral shower nozzle ejects to disperse because of being subjected to the Coulomb repulsion that has the like charges nanofiber that adjacent shower nozzle sprays.
Said process all causes the production efficiency of electro spinning nano fiber to descend.
Therefore be necessary to invent a kind of can the mass preparation high-quality, the method for efficient, high-quality nano fibrous membrane.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of combined continuous electro-spinning nanofiber film manufacturing device and preparation method, promptly is a kind of device and method of extensive, efficient, high quality of production electro spinning nanometer fiber membrane.
Technical scheme:
Combined continuous electro-spinning nanofiber film manufacturing device is made up of continuous reception net, wire netting, electrospinning unit, and wire netting is parallel to be placed on and to receive continuously the vertical back side partly of net at a distance of the 2-20cm place, the wire netting earth connection.It is relative with wire netting that the electrospinning unit is placed on the front of continuous reception net, receives net and electrospinning unit continuously at a distance of 15-40cm.Receive net continuously and driven by driven roller, move up and down, the electrospinning unit keeps moving laterally with the distance that receives net continuously.In the electrospinning unit, fixed support is fixed on the motion slide block, row's formula electrospinning shower nozzle is fixed on the fixed support, the upper end of woven hose links to each other with row's formula electrospinning shower nozzle, the lower end of woven hose links to each other with the fluid reservoir that is used to prepare and store polymer solution by the metering infusion pump, high-pressure installation is positioned at the motion slide block, and the output of high-pressure installation links to each other with row's formula electrospinning shower nozzle.Row's formula electrospinning shower nozzle on the fixed support is no less than 5 rows from top to bottom, vertical range is 5-30cm between every row, at a distance of the 5-30cm position, and the restriction electrode that respectively has a row to link to each other by lead is established in the below of row's formula electrospinning shower nozzle bottom at a distance of the 5-30cm position above topmost row's formula electrospinning shower nozzle; Every row arranges that the shower nozzle number is no less than 5 in the formula electrospinning shower nozzle, and distance is 5-30cm between the shower nozzle, with the two ends shower nozzle two restriction electrodes that link to each other by lead with row's formula electrospinning shower nozzle is arranged at a distance of the 5-30cm position.
Be applicable to the preparation method of the electro spinning nanometer fiber membrane of combined continuous electro-spinning nanofiber film manufacturing device, may further comprise the steps: (1) is pumped the high polymeric solution in the fluid reservoir by the metering infusion pump, and flows to row's formula electrospinning shower nozzle by woven hose; (2) row's formula electrospinning shower nozzle is fixed on the fixed support from top to bottom successively, row's formula electrospinning shower nozzle in the adjacent electrospinning unit is applied the dc high voltage 10KV-100KV of identical or opposite polarity, the high polymeric solution on shower nozzle top sprays silk under electric field action, form nanofiber; (3) fixed support keeps together with the motion slide block and receives the vertical partial parallel of net continuously and make reciprocal uniform motion, and speed is 2cm/s-20cm/s, and amplitude is 5-30cm.Receive continuously net with speed 1-100cm/s uniform motion up or down, receive continuous electro spinning nanometer fiber membrane on the net in reception continuously.
High polymeric solution is that high polymer is dissolved in the solvent or high polymer and additive agent mixture solution; Wherein, high polymer is polyolefin, polyalkenyl halides, polysiloxanes, polyethers, polyamide, polyester, Merlon, polyurethane, epoxy resin, polyacrylonitrile, polyacrylic acid family macromolecule, polyphenylene oxide, poly-acid anhydrides, poly--a-amino acid, polyphenylene sulfide, polyether sulfone, or two or more blend wherein; Or a kind of or their derivative in the chitin, shitosan, hyaluronic acid, chondroitin sulfate, collagen, gelatin, glucan, fibrin, silk-fibroin, zein or two or more blend wherein; Or biology can absorb synthetic high polymer poly--L-lactic acid, poly--(D, L)-and the copolymer of a kind of or following at least two kinds of monomers in lactic acid, polyglycolic acid, polycaprolactone, poly-butyrolactone, poly-valerolactone, polyester dioxane, poly-acid anhydrides, poly--a-amino acid: L-lactic acid, D, L-lactic acid, glycolic acid, 3-hydroxybutyric acid, 3-hydroxypentanoic acid, caprolactone, butyrolactone, valerolactone, amino acid, or two or more blend wherein; Additive is antiseptic, pesticide, anti-inflammation drugs.
Beneficial effect: the present invention compared with prior art has following advantage:
(1) the present invention makes fixed support keep together with the motion slide block and receives the vertical partial parallel of net continuously and make reciprocal little amplitude uniform motion, and it is online to make that electro spinning nano fiber is evenly distributed in continuous reception, obtains the nano fibrous membrane of good uniformity.
(2) the present invention has avoided various disturbances to cause the product cementing point flaw that instability causes when spraying row's formula electrospinning shower nozzle horizontal positioned in the electrospinning unit, has improved the production efficiency of certified products.
(3) the present invention adopts combined continuous electro-spinning nanofiber film manufacturing device and preparation method, apply the dc high voltage of opposite polarity on to the row's formula electrospinning shower nozzle in the adjacent electrospinning unit respectively, offset fiber with electric charge, the fiber of having avoided the online deposition of continuous reception effectively makes that to spraying the Coulomb repulsion effect of the fiber of the band like charges that comes afterwards fiber is difficult for scattering and disappearing.
(4) the present invention topmost and row's formula electrospinning shower nozzle bottom respectively have one to arrange the restriction electrode that links to each other by lead up and down, every row arranges formula electrospinning shower nozzle two ends also two restriction electrodes that link to each other by lead with shower nozzle, thereby has prevented that the nanofiber that peripheral shower nozzle ejects from dispersing.
(5) the present invention adopts combined continuous electro-spinning nanofiber film manufacturing device and preparation method, apply the dc high voltage of opposite polarity on to the row's formula electrospinning shower nozzle in the adjacent electrospinning unit respectively, make from the nanofiber of adjacent electrospinning unit with residual charge cancel out each other, reduce or eliminate the static on the online nano fibrous membrane that deposits of continuous reception effectively, avoided the bad electrostatic effects such as Coulomb repulsion of nano fibrous membrane.
Description of drawings
Fig. 1 is the general structure schematic diagram of continuous electro-spinning system.
Fig. 2 is the structural representation of a unit in the continuous electro-spinning system.
Fig. 3 is the structural representation of electrospinning unit.
Have among the above figure: receive net 1, wire netting 2, electrospinning unit 3,4 fluid reservoirs, metering infusion pump 5, woven hose 6, row's formula electrospinning shower nozzle 7, high-pressure installation 8, fixed support 9, motion slide block 10, driven roller 11, restriction electrode 12, lead 13 continuously.
Fig. 4 is the electron scanning micrograph of polylactic acid electrospinning nano fibrous membrane.
The specific embodiment
A kind of combined continuous electro-spinning nanofiber film manufacturing device of the present invention is made up of continuous reception net 1, wire netting 2, electrospinning unit 3, wire netting 2 parallel being placed on and continuous 2-20cm place apart, the net 1 vertical back side partly, wire netting 2 earth connections of receiving.It is relative with wire netting 2 that electrospinning unit 3 is placed on the front of continuous reception net 1, receives net 1 and electrospinning unit 3 continuously at a distance of 15-40cm.Receive net 1 continuously and driven by driven roller 11, move up and down, electrospinning unit 3 keeps moving laterally with the distance that receives net 1 continuously.In the electrospinning unit 3, fixed support 9 is fixed on the motion slide block 10, row's formula electrospinning shower nozzle 7 is fixed on the fixed support 9, the upper end of woven hose 6 links to each other with row's formula electrospinning shower nozzle 7, the lower end of woven hose 6 links to each other with the fluid reservoir 4 that is used to prepare and store polymer solution by metering infusion pump 5, high-pressure installation 8 is positioned at motion slide block 10, and the output of high-pressure installation 8 links to each other with row's formula electrospinning shower nozzle 7.Row's formula electrospinning shower nozzle 7 on the fixed support 9 is no less than 5 rows from top to bottom, vertical range is 5-30cm between every row, at a distance of the 5-30cm position, and the restriction electrode 12 that respectively has a row to link to each other by lead 13 is established in the below of row's formula electrospinning shower nozzle 7 bottom at a distance of the 5-30cm position above topmost row's formula electrospinning shower nozzle 7; Every row arranges that the shower nozzle number is no less than 5 in the formula electrospinning shower nozzle 7, and distance is 5-30cm between the shower nozzle, with the two ends shower nozzle two restriction electrodes 12 that link to each other by lead 13 with row's formula electrospinning shower nozzle 7 is arranged at a distance of the 5-30cm position.
A kind of preparation method who is applicable to the electro spinning nanometer fiber membrane of combined continuous electro-spinning nanofiber film manufacturing device of the present invention, may further comprise the steps: (1) is pumped the high polymeric solution in the fluid reservoir 4 by metering infusion pump 5, and by woven hose 6 row's of flowing to formula electrospinning shower nozzles 7; (2) row's formula electrospinning shower nozzle 7 is fixed on the fixed support 9 from top to bottom successively, row's formula electrospinning shower nozzle 7 in the adjacent electrospinning unit is applied the dc high voltage 10KV-100KV of identical or opposite polarity, the high polymeric solution on shower nozzle top sprays silk under electric field action, form nanofiber; (3) fixed support 9 keeps together with motion slide block 10 and receives net 1 vertical partial parallel continuously and make reciprocal uniform motion, and speed is 2cm/s-20cm/s, and amplitude is 5-30cm.Receive continuously net 1 with speed 1-100cm/s uniform motion up or down, receiving continuous electro spinning nanometer fiber membrane receiving on the net 1 continuously.
High polymeric solution is that high polymer is dissolved in the solvent or high polymer and additive agent mixture solution; Wherein, high polymer is polyolefin, polyalkenyl halides, polysiloxanes, polyethers, polyamide, polyester, Merlon, polyurethane, epoxy resin, polyacrylonitrile, polyacrylic acid family macromolecule, polyphenylene oxide, poly-acid anhydrides, poly--a-amino acid, polyphenylene sulfide, polyether sulfone, or two or more blend wherein; Or a kind of or their derivative in the chitin, shitosan, hyaluronic acid, chondroitin sulfate, collagen, gelatin, glucan, fibrin, silk-fibroin, zein or two or more blend wherein; Or biology can absorb synthetic high polymer poly--L-lactic acid, poly--(D, L)-and the copolymer of a kind of or following at least two kinds of monomers in lactic acid, polyglycolic acid, polycaprolactone, poly-butyrolactone, poly-valerolactone, polyester dioxane, poly-acid anhydrides, poly--a-amino acid: L-lactic acid, D, L-lactic acid, glycolic acid, 3-hydroxybutyric acid, 3-hydroxypentanoic acid, caprolactone, butyrolactone, valerolactone, amino acid, or two or more blend wherein; Additive is antiseptic, pesticide, anti-inflammation drugs.
Embodiment 1
Polyacrylonitrile (PAN) 100g is dissolved in 1000mlN, in the dinethylformamide, this solution in the fluid reservoir is pumped by the metering infusion pump, flow to row's formula electrospinning shower nozzle by woven hose, fixed support has been fixed 5 row's formula electrospinning shower nozzles from top to bottom, between every row apart from 20cm, with topmost and row's formula electrospinning shower nozzle bottom respectively have one to arrange the restriction electrode that links to each other by lead at a distance of the 20cm position.Each row's formula electrospinning shower nozzle has 5 in shower nozzle, and distance is 20cm between the shower nozzle, and at a distance of the 20cm position two restriction electrodes that link to each other by lead with shower nozzle is arranged with the two ends shower nozzle, and the shower nozzle internal diameter is 1.0mm.Row's formula electrospinning shower nozzle to adjacent electrospinning unit applies positive direct-current high voltage 20KV, and the high polymeric solution on shower nozzle top sprays silk under electric field action, forms nanofiber.Wire netting and the continuous vertical back side partly of the net 10cm apart that receives receive net and electrospinning unit continuously at a distance of 30cm.Fixed support keeps together with the motion slide block and receives the vertical partial parallel of net continuously and make reciprocal uniform motion, and speed is 10cm/s, and amplitude is 20cm.Receive continuously net with speed 50cm/s uniform motion up or down, receive continuous electro spinning nanometer fiber membrane on the net in reception continuously.
Embodiment 2
Poly--L-lactic acid PLLA (viscosity average molecular weigh 100,000) 100g is dissolved in 500ml acetone and 500mlN, in the mixed solvent of dinethylformamide, this solution in the fluid reservoir is pumped by the metering infusion pump, flow to row's formula electrospinning shower nozzle by woven hose, fixed support has been fixed 10 row's formula electrospinning shower nozzles from top to bottom, between every row apart from 15cm.Each row's formula electrospinning shower nozzle has 10 in shower nozzle, and distance is 15cm between the shower nozzle, and at a distance of the 15cm position two restriction electrodes that link to each other by lead with shower nozzle is arranged with the two ends shower nozzle, and the shower nozzle internal diameter is 0.5mm.Row's formula electrospinning shower nozzle to adjacent electrospinning unit applies positive direct-current high voltage 10KV, and the high polymeric solution on shower nozzle top sprays silk under electric field action, forms nanofiber.Wire netting and the continuous vertical back side partly of the net 2cm apart that receives receive net and electrospinning unit continuously at a distance of 15cm.Fixed support keeps together with the motion slide block and receives the vertical partial parallel of net continuously and make reciprocal uniform motion, and speed is 2cm/s, and amplitude is 15cm.Receive continuously net with speed 20cm/s uniform motion up or down, receive continuous electro spinning nanometer fiber membrane on the net in reception continuously.
Embodiment 3
(wherein quality is formed lactide 50% to the random copolymer PLGA of lactide and glycolide, glycolide 50%, viscosity average molecular weigh 100,000) 150g is dissolved in 500ml acetone and 500mlN, in the mixed solvent of dinethylformamide, this solution in the fluid reservoir is pumped by the metering infusion pump, flow to row's formula electrospinning shower nozzle by woven hose, fixed support has been fixed 20 row's formula electrospinning shower nozzles from top to bottom, between every row apart from 5cm, with topmost and row's formula electrospinning shower nozzle bottom respectively have one to arrange the restriction electrode that links to each other by lead at a distance of the 5cm position.Each row's formula electrospinning shower nozzle has 20 in shower nozzle, and distance is 5cm between the shower nozzle, and at a distance of the 5cm position two restriction electrodes that link to each other by lead with shower nozzle is arranged with the two ends shower nozzle, and the shower nozzle internal diameter is 1.0mm.Row's formula electrospinning shower nozzle to adjacent electrospinning unit applies negative dc high voltage 20KV, and the high polymeric solution on shower nozzle top sprays silk under electric field action, form nanofiber.Wire netting and the continuous vertical back side partly of the net 10cm apart that receives receive net and electrospinning unit continuously at a distance of 30cm.Fixed support keeps together with the motion slide block and receives the vertical partial parallel of net continuously and make reciprocal uniform motion, and speed is 10cm/s, and amplitude is 20cm.Receive continuously net with speed 50cm/s uniform motion up or down, receive continuous electro spinning nanometer fiber membrane on the net in reception continuously.
The random copolymer PLGA of lactide and glycolide (wherein quality is formed lactide 70%, glycolide 30%, viscosity average molecular weigh 100,000) 150g is dissolved in 500ml acetone and 500mlN, in the mixed solvent of dinethylformamide, adds the 3g brufen again, fully dissolving.This solution in the fluid reservoir is pumped by the metering infusion pump, flow to row's formula electrospinning shower nozzle by woven hose, fixed support has been fixed 3 row's formula electrospinning shower nozzles from top to bottom, between every row apart from 30cm, with topmost and row's formula electrospinning shower nozzle bottom respectively have one to arrange the restriction electrode that links to each other by lead at a distance of the 20cm position.Each row's formula electrospinning shower nozzle has 20 in shower nozzle, and distance is 5cm between the shower nozzle, and at a distance of the 5cm position two restriction electrodes that link to each other by lead with shower nozzle is arranged with the two ends shower nozzle, and the shower nozzle internal diameter is 1.5mm.Row's formula electrospinning shower nozzle to adjacent electrospinning unit applies negative dc high voltage 30KV, and the high polymeric solution on shower nozzle top sprays silk under electric field action, form nanofiber.Wire netting and the continuous vertical back side partly of the net 5cm apart that receives receive net and electrospinning unit continuously at a distance of 20cm.Fixed support keeps together with the motion slide block and receives the vertical partial parallel of net continuously and make reciprocal uniform motion, and speed is 15cm/s, and amplitude is 5cm.Receive continuously net with speed 60cm/s uniform motion up or down, receive continuous electro spinning nanometer fiber membrane on the net in reception continuously.
Polyacrylonitrile (PAN) 100g is dissolved in 1000mlN, in the dinethylformamide, add 10g nanometer Ag 2O again, sonic oscillation makes it abundant dissolving, this solution in the fluid reservoir is pumped by the metering infusion pump, flow to row's formula electrospinning shower nozzle by woven hose, fixed support has been fixed 5 row's formula electrospinning shower nozzles from top to bottom, between every row apart from 20cm.Each row's formula electrospinning shower nozzle has 5 in shower nozzle, and distance is 20cm between the shower nozzle, and at a distance of the 20cm position two restriction electrodes that link to each other by lead with shower nozzle is arranged with the two ends shower nozzle, and the shower nozzle internal diameter is 1.5mm.Row's formula electrospinning shower nozzle to adjacent electrospinning unit applies positive direct-current high voltage 20KV, and the high polymeric solution on shower nozzle top sprays silk under electric field action, forms nanofiber.Wire netting and the continuous vertical back side partly of the net 10cm apart that receives receive net and electrospinning unit continuously at a distance of 30cm.Fixed support keeps together with the motion slide block and receives the vertical partial parallel of net continuously and make reciprocal uniform motion, and speed is 10cm/s, and amplitude is 20cm.Receive continuously net with speed 50cm/s uniform motion up or down, receive continuous electro spinning nanometer fiber membrane on the net in reception continuously.
Poly--L-lactic acid PLLA (viscosity average molecular weigh 200,000) 50g is dissolved in 500ml acetone and 500mlN, in the mixed solvent of dinethylformamide, this solution in the fluid reservoir is pumped by the metering infusion pump, flow to row's formula electrospinning shower nozzle by woven hose, fixed support has been fixed 10 row's formula electrospinning shower nozzles from top to bottom, between every row apart from 15cm, with topmost and row's formula electrospinning shower nozzle bottom respectively have one to arrange the restriction electrode that links to each other by lead at a distance of the 15cm position.Each row's formula electrospinning shower nozzle has 10 in shower nozzle, and distance is 15cm between the shower nozzle, and at a distance of the 15cm position two restriction electrodes that link to each other by lead with shower nozzle is arranged with the two ends shower nozzle, and the shower nozzle internal diameter is 0.5mm.Row's formula electrospinning shower nozzle of adjacent electrospinning unit is applied the dc high voltage ± 15KV of opposite polarity respectively, the high polymeric solution on shower nozzle top sprays silk under electric field action, form nanofiber, charged nanofiber does not have to arrive with dispersing accepts net, attract each other with the nanofiber of accepting online oppositely charged, make electric-charge-dissipating, deposition becomes homodisperse nano fibrous membrane.Wire netting and the continuous vertical back side partly of the net 2cm apart that receives receive net and electrospinning unit continuously at a distance of 15cm.Fixed support keeps together with the motion slide block and receives the vertical partial parallel of net continuously and make reciprocal uniform motion, and speed is 2cm/s, and amplitude is 15cm.Receive continuously net with speed 20cm/s uniform motion up or down, receive continuous electro spinning nanometer fiber membrane on the net in reception continuously.
Polyurethane PU 150g is dissolved in 1000mlN, in the dinethylformamide, this solution in the fluid reservoir is pumped by the metering infusion pump, flow to row's formula electrospinning shower nozzle by woven hose, fixed support has been fixed 20 row's formula electrospinning shower nozzles from top to bottom, between every row apart from 5cm, with topmost and row's formula electrospinning shower nozzle bottom respectively have one to arrange the restriction electrode that links to each other by lead at a distance of the 5cm position.Each row's formula electrospinning shower nozzle has 10 in shower nozzle, and distance is 10cm between the shower nozzle, and at a distance of the 10cm position two restriction electrodes that link to each other by lead with shower nozzle is arranged with the two ends shower nozzle, and the shower nozzle internal diameter is 1.5mm.Row's formula electrospinning shower nozzle of adjacent electrospinning unit is applied the dc high voltage ± 25KV of opposite polarity respectively, the high polymeric solution on shower nozzle top sprays silk under electric field action, form nanofiber, charged nanofiber does not have to arrive with dispersing accepts net, attract each other with the nanofiber of accepting online oppositely charged, make electric-charge-dissipating, deposition becomes homodisperse nano fibrous membrane.Wire netting and the continuous vertical back side partly of the net 5cm apart that receives receive net and electrospinning unit continuously at a distance of 15cm.Fixed support keeps together with the motion slide block and receives the vertical partial parallel of net continuously and make reciprocal uniform motion, and speed is 20cm/s, and amplitude is 10cm.Receive continuously net with speed 50cm/s uniform motion up or down, receive continuous electro spinning nanometer fiber membrane on the net in reception continuously.
Poly-s 179 PPES100g is dissolved in the 1000ml methyl-sulfoxide, and this solution in the fluid reservoir is pumped by the metering infusion pump, flows to row's formula electrospinning shower nozzle by woven hose, and fixed support has been fixed 10 row's formula electrospinning shower nozzles from top to bottom, between every row apart from 10cm.Each row's formula electrospinning shower nozzle has 5 in shower nozzle, and distance is 20cm between the shower nozzle, and at a distance of the 20cm position two restriction electrodes that link to each other by lead with shower nozzle is arranged with the two ends shower nozzle, and the shower nozzle internal diameter is 1.2mm.Row's formula electrospinning shower nozzle of adjacent electrospinning unit is applied the dc high voltage ± 18KV of opposite polarity respectively, the high polymeric solution on shower nozzle top sprays silk under electric field action, form nanofiber, charged nanofiber does not have to arrive with dispersing accepts net, attract each other with the nanofiber of accepting online oppositely charged, make electric-charge-dissipating, deposition becomes homodisperse nano fibrous membrane.Wire netting and the continuous vertical back side partly of the net 2cm apart that receives receive net and electrospinning unit continuously at a distance of 20cm.Fixed support keeps together with the motion slide block and receives the vertical partial parallel of net continuously and make reciprocal uniform motion, and speed is 10cm/s, and amplitude is 20cm.Receive continuously net with speed 40cm/s uniform motion up or down, receive continuous electro spinning nanometer fiber membrane on the net in reception continuously.
Polyurethane PU 150g is dissolved in 1000mlN, obtain polyurethane solutions in the dinethylformamide, poly--L-lactic acid PLLA (viscosity average molecular weigh 200,000) 50g is dissolved in 500ml acetone and 500mlN, gathered in the mixed solvent of dinethylformamide-the L-lactic acid solution, in containing the electrospinning system of six electrospinning unit, the 1st, 3, add polyurethane solutions in the fluid reservoir of 5 electrospinning unit, the 2nd, add poly--L-lactic acid solution in the fluid reservoir of 4,6 electrospinning unit, solution is pumped by the metering infusion pump, by the woven hose row's of flowing to formula electrospinning shower nozzle respectively, fixed support has been fixed 20 row's formula electrospinning shower nozzles from top to bottom, between every row apart from 5cm, with topmost and row's formula electrospinning shower nozzle bottom respectively have one to arrange the restriction electrode that links to each other by lead at a distance of the 5cm position.Each row's formula electrospinning shower nozzle has 10 in shower nozzle, and distance is 15cm between the shower nozzle, and at a distance of the 10cm position two restriction electrodes that link to each other by lead with shower nozzle is arranged with the two ends shower nozzle, and the shower nozzle internal diameter is 1.5mm.To the 1st, row's formula electrospinning shower nozzle of 3,5 electrospinning unit applies dc high voltage+25KV, the 2nd, 4,6 electrospinning unit row's formula electrospinning shower nozzle apply dc high voltage-25KV, the high polymeric solution on shower nozzle top sprays silk under electric field action, form nanofiber, charged nanofiber does not have to arrive with dispersing accepts net, attract each other with the nanofiber of accepting online oppositely charged, make electric-charge-dissipating, deposition becomes homodisperse polyurethane/poly--L-lactic acid hybridized nanometer tunica fibrosa.Wire netting and the continuous vertical back side partly of the net 5cm apart that receives receive net and electrospinning unit continuously at a distance of 15cm.Fixed support keeps together with the motion slide block and receives the vertical partial parallel of net continuously and make reciprocal uniform motion, and speed is 20cm/s, and amplitude is 15cm.Receive continuously net with speed 50cm/s uniform motion up or down, receive continuous electro spinning nanometer fiber membrane on the net in reception continuously.The nano fibrous membrane that takes off does not have Coulomb repulsion.
Polyacrylonitrile 150g is dissolved in 1000mlN, obtain polyacrylonitrile solution in the dinethylformamide, poly--L-lactic acid PLLA (viscosity average molecular weigh 200,000) 50g is dissolved in 500ml acetone and 500mlN, gathered in the mixed solvent of dinethylformamide-the L-lactic acid solution, in containing the electrospinning system of ten electrospinning unit, the 1st, 3,5,7, add polyacrylonitrile solution in the fluid reservoir of 9 electrospinning unit, the 2nd, 4,6, add poly--L-lactic acid solution in the fluid reservoir of 8,10 electrospinning unit, solution is pumped by the metering infusion pump, by the woven hose row's of flowing to formula electrospinning shower nozzle respectively, fixed support has been fixed 20 row's formula electrospinning shower nozzles from top to bottom, between every row apart from 5cm, with topmost and row's formula electrospinning shower nozzle bottom respectively have one to arrange the restriction electrode that links to each other by lead at a distance of the 5cm position.Each row's formula electrospinning shower nozzle has 10 in shower nozzle, and distance is 15cm between the shower nozzle, and at a distance of the 10cm position two restriction electrodes that link to each other by lead with shower nozzle is arranged with the two ends shower nozzle, and the shower nozzle internal diameter is 1mm.To the 1st, 3,5, row's formula electrospinning shower nozzle of 7,9 electrospinning unit applies dc high voltage+30KV, the 2nd, 4,6,8,10 electrospinning unit row's formula electrospinning shower nozzle apply dc high voltage-30KV, the high polymeric solution on shower nozzle top sprays silk under electric field action, form nanofiber, charged nanofiber does not have to arrive with dispersing accepts net, attract each other with the nanofiber of accepting online oppositely charged, make electric-charge-dissipating, deposition becomes homodisperse polyacrylonitrile/poly--L-lactic acid hybridized nanometer tunica fibrosa.Wire netting and the continuous vertical back side partly of the net 5cm apart that receives receive net and electrospinning unit continuously at a distance of 15cm.Fixed support keeps together with the motion slide block and receives the vertical partial parallel of net continuously and make reciprocal uniform motion, and speed is 20cm/s, and amplitude is 15cm.Receive continuously net with speed 50cm/s uniform motion up or down, receive continuous electro spinning nanometer fiber membrane on the net in reception continuously.The nano fibrous membrane that takes off does not have Coulomb repulsion.
Claims (9)
1, a kind of combined continuous electro-spinning nanofiber film manufacturing device, it is characterized in that this device is made up of continuous reception net (1), wire netting (2), electrospinning unit (3), the parallel vertically back side of part of continuous reception net (1) that is placed on of wire netting (2), it is relative with wire netting (2) that electrospinning unit (3) are placed on the front of continuous reception net (1); Receive net (1) continuously and driven by driven roller (11), move up and down, electrospinning unit (3) keep moving laterally with the distance that receives net (1) continuously.
2, combined continuous electro-spinning nanofiber film manufacturing device according to claim 1, it is characterized in that in the electrospinning unit (3), fixed support (9) is fixed on the motion slide block (10), row's formula electrospinning shower nozzle (7) is fixed on the fixed support (9), the upper end of woven hose (6) links to each other with row's formula electrospinning shower nozzle (7), the lower end of woven hose (6) links to each other with the fluid reservoir that is used to prepare and store polymer solution (4) by metering infusion pump (5), high-pressure installation (8) is positioned at motion slide block (10), and the output of high-pressure installation (8) links to each other with row's formula electrospinning shower nozzle (7).
3, combined continuous electro-spinning nanofiber film manufacturing device according to claim 1 is characterized in that at the back side that receives the vertical part of net (1) continuously at a distance of 2-20cm place parallelization wire netting (2), wire netting (2) earth connection.
4, combined continuous electro-spinning nanofiber film manufacturing device according to claim 1 is characterized in that receiving continuously net (1) and electrospinning unit (3) at a distance of 15-40cm.
5, combined continuous electro-spinning nanofiber film manufacturing device according to claim 1, it is characterized in that the row's formula electrospinning shower nozzle (7) on the fixed support (9) is no less than 5 rows from top to bottom, vertical range is 5-30cm between every row, at a distance of the 5-30cm position, and the restriction electrode (12) that respectively has a row to link to each other by lead (13) is established in the below of row's formula electrospinning shower nozzle (7) bottom at a distance of the 5-30cm position in the top of topmost row's formula electrospinning shower nozzle (7); Every row arranges the middle shower nozzle number of formula electrospinning shower nozzle (7) and is no less than 5, and distance is 5-30cm between the shower nozzle, with the two ends shower nozzle two restriction electrodes (12) that link to each other by lead (13) with row's formula electrospinning shower nozzle (7) is arranged at a distance of the 5-30cm position.
6, a kind of preparation method who is applicable to the electro spinning nanometer fiber membrane of the described combined continuous electro-spinning nanofiber of claim 1 film manufacturing device is characterized in that the preparation method may further comprise the steps:
1) high polymeric solution in the fluid reservoir (4) is pumped by metering infusion pump (5), and by woven hose (6) row's of flowing to formula electrospinning shower nozzle (7);
2) row's formula electrospinning shower nozzle (7) is fixed on the fixed support (9) from top to bottom successively, row's formula electrospinning shower nozzle (7) in the adjacent electrospinning unit (3) is applied the dc high voltage 10KV-100KV of identical or opposite polarity, the high polymeric solution on shower nozzle top sprays silk under electric field action, form nanofiber;
3) fixed support (9) keeps receiving the vertical partial parallel of net (1) and making reciprocal uniform motion with continuous together with motion slide block (10), and (1) receives continuous electro spinning nanometer fiber membrane receiving on the net continuously.
7, the preparation method of the electro spinning nanometer fiber membrane of combined continuous electro-spinning nanofiber film manufacturing device according to claim 6 is characterized in that receiving continuously net with speed 1-100cm/s uniform motion up or down.
8, the preparation method of the electro spinning nanometer fiber membrane of combined continuous electro-spinning nanofiber film manufacturing device according to claim 6 is characterized in that the speed of the reciprocal uniform motion of motion slide block is 2cm/s-20cm/s, and amplitude is 5-30cm.
9, the preparation method of the electro spinning nanometer fiber membrane of combined continuous electro-spinning nanofiber film manufacturing device according to claim 6 is characterized in that high polymeric solution is that high polymer is dissolved in the solvent or high polymer and additive agent mixture solution; Wherein, high polymer is polyolefin, polyalkenyl halides, polysiloxanes, polyethers, polyamide, polyester, Merlon, polyurethane, epoxy resin, polyacrylonitrile, polyacrylic acid family macromolecule, polyphenylene oxide, poly-acid anhydrides, poly--a-amino acid, polyphenylene sulfide, polyether sulfone, or two or more blend wherein; Or a kind of or their derivative in the chitin, shitosan, hyaluronic acid, chondroitin sulfate, collagen, gelatin, glucan, fibrin, silk-fibroin, zein or two or more blend wherein; Or biology can absorb synthetic high polymer poly--L-lactic acid, poly--(D, L)-and the copolymer of a kind of or following at least two kinds of monomers in lactic acid, polyglycolic acid, polycaprolactone, poly-butyrolactone, poly-valerolactone, polyester dioxane, poly-acid anhydrides, poly--a-amino acid: L-lactic acid, D, L-lactic acid, glycolic acid, 3-hydroxybutyric acid, 3-hydroxypentanoic acid, caprolactone, butyrolactone, valerolactone, amino acid, or two or more blend wherein; Additive is antiseptic, pesticide, anti-inflammation drugs.
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