CN106637523A - Preparation method of porous polylactic acid fiber - Google Patents
Preparation method of porous polylactic acid fiber Download PDFInfo
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- CN106637523A CN106637523A CN201610977991.8A CN201610977991A CN106637523A CN 106637523 A CN106637523 A CN 106637523A CN 201610977991 A CN201610977991 A CN 201610977991A CN 106637523 A CN106637523 A CN 106637523A
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- pla
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
- D01F11/08—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
The invention discloses a preparation method of porous polylactic acid (PLA) fiber. The preparation method includes steps of weighing a certain weight of skin-core structural polylactic acid, wherein the core layer is PLA of which paralactic acid structural unit (D-LA) content is 0-10 mol%, and skin layer is PLA of which D-LA content is 10-100%, and the viscosity average molecular weight is 3.0x104-1.0x106; or the core layer is steric composite polylactic acid (sc-PLA), and sc-PLA is mixture of L-polylactide (PLLA) and dextrorotation (PDLA); the weight ratio of PLLA and PDLA is 1: 1; the skin layer is PLD of which D-LA content is 0-100%; according to the bath ratio of 1: 5-1: 100, immersing the PLA fiber of the skin-core structure to a certain quantity of solvent; taking out the fiber after immersing for 5 seconds-3 hours; drying and acquiring the porous polylactic acid fiber. The method is simple and easy to practice, and can reach industrial production; the prepared porous PLA fiber is uniform in pore diameter distribution, and can be applied to drug slow release, water purification, absorption and tissue engineering, other fields.
Description
Technical field
The present invention relates to field of high polymer material processing, and in particular to a kind of preparation side of porous PLA (PLA) fiber
Method.
Background technology
The method for preparing porous fibre is more, and (1) can be added to pore former in polymer carries out the prepared fiber of spinning,
Then pore former is dissolved away, porous fibre is obtained【Yang Enning, Guo Jing .CaCO3/ polypropene blended prepare porous polypropylene fibre
Research [J]. synthetic fibers, 2006, (2):25-27.】.(2) porous long filament can also be obtained with the method for foaming【Krause,
B.；Kloth,M.；van der Vegt,N.F.A.；Wessling,M.Porous Monofilaments by Continuous
Solid-State Foaming.Ind.Eng.Chem.Res.2002,41:1195-1204.】.(3) will during electrostatic spinning
Reception device is placed in liquid nitrogen, makes to produce phase separation between solvent and polymer, forms porous fibre【McCann,J.T.；
Marquez,M.；Xia,Y.Highly Porous Fibers by Electrospinning into a Cryogenic
Liquid.J.Am.Chem.Soc.2006,128:1436-1437.】.(4) during electrostatic spinning, adjust environment humidity or
Using the solvent of high volatile, porous fibre can be also obtained.(5) melt spinning is carried out using two-phase incompatibility polymer, is removed
A certain phase in fiber can be obtained porous fibre.(6) also can be made with non-solvent/solvent/polymer system carries out electrostatic spinning
Obtain porous fibre【Qi,Z.；Yu,H.；Chen,Y.；Zhu,M.Highly Porous Fibers Prepared by
Electrospinning a Ternary System of Nonsolvent/Solvent/Poly(L-lactic acid)
.Mater.Lett.2009,63:415-418.】.The invention provides a kind of easy formation homogeneous loose structure PLA fibers
Method, and it is totally different from existing method.
The content of the invention
It is an object of the invention to provide a kind of method of easy preparation porous PLA (PLA), the method is different from
The method that in the past any one prepares porous fibre.
The preparation method of porous PLA (PLA) fiber, comprises the following steps：According to certain bath raio, weigh a certain amount of
Skin-core structure acid fiber by polylactic immerse in a certain amount of solvent, take out after time of infusion, drying obtains porous PLA
Fiber.
The preparation method of described porous PLA fiber, it is characterised in that the sandwich layer of the skin-core structure PLA fibers is dextrorotation
Lactic acid construction unit (D-LA) content is the PLA of 0～10mol%, and viscosity average molecular weigh is 6.0 × 104～1.0 × 106, cortex is
D-LA contents are 10～100% PLA, and viscosity average molecular weigh is 3.0 × 104～1.0 × 106；Or sandwich layer is the poly- breast of Stereocomplex
Sour (sc-PLA), sc-PLA is PLLA (PLLA) and the mixture of dextrorotation PLA (PDLA), the weight of PLLA and PDLA
Amount is than being 1：1, viscosity average molecular weigh is 6.0 × 104～1.0 × 106, cortex is the PLA that D-LA contents are 0～100%, glues and divides equally
Son amount is 3.0 × 104～1.0 × 106。
The preparation method of described porous PLA fiber, it is characterised in that the solvent is ethyl acetate, acetone, tetrahydrochysene furan
Mutter, the one kind in dichloromethane, chloroform, 1,4- dioxane.
The preparation method of described porous PLA fiber, it is characterised in that described fiber and the bath raio of solvent is 1：5～1：
100。
The preparation method of described porous PLA fiber, it is characterised in that described dip time is 5 seconds～3 hours.
Beneficial effect：
(1) the method is simple, can industrialized production.
(2) pore size distribution of porous PLA fiber is uniform obtained in.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
And do not limit the scope of the invention.In addition, it is to be understood that after the content for having read instruction of the present invention, those skilled in the art can
So that to various changes of the invention or modification, these equivalent form of values equally fall into the model that the application appended claims are limited
Enclose.
Embodiment 1
The skin-core structure PLA fibers of 1kg are weighed, skin-core structure PLA fibers mediopellis is the PLA that D-LA contents are 10%,
Sandwich layer is PLLA (i.e. the content of D-LA is 0), according to 1：10 bath raio, skin-core structure PLA fibers are immersed in 10L acetone,
Dipping takes out after 10 minutes, and drying obtains porous PLA fiber.
Embodiment 2
The skin-core structure PLA fibers of 1kg are weighed, skin-core structure PLA fibers mediopellis is the PLA that D-LA contents are 0%, i.e.,
PLLA, it is 1 that sandwich layer is the weight ratio of sc-PLA, i.e. PLLA and PDLA：1 blend, according to 1：20 bath raio, by skin-core structure
PLA fibers are immersed in the tetrahydrofuran of 20L, and dipping takes out after 5 minutes, and drying obtains porous PLA fiber.
Embodiment 3
The skin-core structure PLA fibers of 1kg are weighed, skin-core structure PLA fibers mediopellis is the PLA that D-LA contents are 20%,
Sandwich layer is PLLA (i.e. the content of D-LA is 0), according to 1：10 bath raio, by skin-core structure PLA fibers 10L vinyl acetates are immersed in
In ester, dipping takes out after 30 minutes, and drying obtains porous PLA fiber.
Embodiment 4
The skin-core structure PLA fibers of 1kg are weighed, skin-core structure PLA fibers mediopellis is the PLA that D-LA contents are 10%,
Sandwich layer is the PLA that the content of D-LA is 2%, according to 1：10 bath raio, by skin-core structure PLA fibers 10L vinyl acetates are immersed in
In ester, dipping takes out after 20 minutes, and drying obtains porous PLA fiber.
Embodiment 5
The skin-core structure PLA fibers of 1kg are weighed, skin-core structure PLA fibers mediopellis is the PLA that D-LA contents are 0%, i.e.,
PLLA, it is 1 that sandwich layer is the weight ratio of sc-PLA, i.e. PLLA and PDLA：1 blend, according to 1：20 bath raio, by skin-core structure
PLA fibers are immersed in the Isosorbide-5-Nitrae-dioxane of 20L, and dipping takes out after 10 minutes, and drying obtains porous PLA fiber.
Embodiment 6
The skin-core structure PLA fibers of 1kg are weighed, skin-core structure PLA fibers mediopellis is the PLA that D-LA contents are 0%, i.e.,
PLLA, it is 1 that sandwich layer is the weight ratio of sc-PLA, i.e. PLLA and PDLA：1 blend, according to 1：10 bath raio, by skin-core structure
PLA fibers are immersed in the dichloromethane of 10L, and dipping takes out after 5 seconds, and drying obtains porous PLA fiber.
Claims (5)
1. a kind of preparation method of porous PLA (PLA) fiber, comprises the following steps：According to certain bath raio, weigh certain
The skin-core structure acid fiber by polylactic of amount is immersed in a certain amount of solvent, is taken out after time of infusion, and drying obtains the poly- breast of porous
Sour fiber.
2. the preparation method of porous PLA fiber according to claim 1, it is characterised in that the skin-core structure PLA fibers
Sandwich layer be L-lactic acid construction unit (D-LA) content be 0～10mol% PLA, viscosity average molecular weigh be 6.0 × 104～1.0
×106, cortex is the PLA that D-LA contents are 10～100%, and viscosity average molecular weigh is 3.0 × 104～1.0 × 106；Or sandwich layer is
Stereocomplex PLA (sc-PLA), sc-PLA is the mixture of PLLA (PLLA) and dextrorotation PLA (PDLA),
The weight ratio of PLLA and PDLA is 1：1, viscosity average molecular weigh is 6.0 × 104～1.0 × 106, cortex be D-LA contents be 0～
100% PLA, viscosity average molecular weigh is 3.0 × 104～1.0 × 106。
3. the preparation method of porous PLA fiber according to claim 1, it is characterised in that the solvent be ethyl acetate,
One kind in acetone, tetrahydrofuran, dichloromethane, chloroform, 1,4- dioxane.
4. the preparation method of porous PLA fiber according to claim 1, it is characterised in that the bath of described fiber and solvent
Than for 1：5～1：100.
5. the preparation method of porous PLA fiber according to claim 1, it is characterised in that described dip time is 5 seconds
～3 hours.
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| CN201610977991.8A CN106637523A (en) | 2016-11-08 | 2016-11-08 | Preparation method of porous polylactic acid fiber |
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| CN201610977991.8A CN106637523A (en) | 2016-11-08 | 2016-11-08 | Preparation method of porous polylactic acid fiber |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199754A (en) * | 2017-06-14 | 2017-09-26 | 淄博成达塑化有限公司 | Biodegradable 3D printing silk of three layers of skin-core structure and preparation method thereof |
| CN110791850A (en) * | 2019-11-29 | 2020-02-14 | 江南大学 | High-strength pulp-free polylactic acid multifilament and preparation method thereof |
| WO2020238270A1 (en) * | 2019-05-29 | 2020-12-03 | 南京大学 | Modified polylactic acid non-woven fabric for oil-water separation, preparation method therefor and application thereof |
| CN113882036A (en) * | 2021-11-15 | 2022-01-04 | 罗莱生活科技股份有限公司 | Polyester composite elastic fiber and production method thereof |
| CN115467170A (en) * | 2022-08-26 | 2022-12-13 | 东华大学 | Surface-porous skin-core structure yarn and preparation method thereof |
| WO2024060501A1 (en) * | 2022-09-23 | 2024-03-28 | 云南中烟工业有限责任公司 | Preparation method for knife-hitting-preventing polylactic acid fiber filter stick |
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| JP2003342836A (en) * | 2002-05-27 | 2003-12-03 | Nippon Ester Co Ltd | Heat-bonding fiber and fiber product comprising the same |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199754A (en) * | 2017-06-14 | 2017-09-26 | 淄博成达塑化有限公司 | Biodegradable 3D printing silk of three layers of skin-core structure and preparation method thereof |
| CN107199754B (en) * | 2017-06-14 | 2019-03-26 | 淄博成达塑化有限公司 | The biodegradable 3D printing silk and preparation method thereof of three layers of skin-core structure |
| WO2020238270A1 (en) * | 2019-05-29 | 2020-12-03 | 南京大学 | Modified polylactic acid non-woven fabric for oil-water separation, preparation method therefor and application thereof |
| GB2598511A (en) * | 2019-05-29 | 2022-03-02 | Nanjing University Of Technology | Modified polylactic acid non-woven fabric for oil-water separation, preparation method therefor and application thereof |
| GB2598511B (en) * | 2019-05-29 | 2022-07-06 | Nanjing University Of Technology | Modified polylactic acid nonwoven fabric for oil/water separation and preparation method and application thereof |
| CN110791850A (en) * | 2019-11-29 | 2020-02-14 | 江南大学 | High-strength pulp-free polylactic acid multifilament and preparation method thereof |
| CN113882036A (en) * | 2021-11-15 | 2022-01-04 | 罗莱生活科技股份有限公司 | Polyester composite elastic fiber and production method thereof |
| CN115467170A (en) * | 2022-08-26 | 2022-12-13 | 东华大学 | Surface-porous skin-core structure yarn and preparation method thereof |
| WO2024060501A1 (en) * | 2022-09-23 | 2024-03-28 | 云南中烟工业有限责任公司 | Preparation method for knife-hitting-preventing polylactic acid fiber filter stick |
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