CN104652119B - A kind of preparation method of double-network hydrogel fiber and products thereof - Google Patents
A kind of preparation method of double-network hydrogel fiber and products thereof Download PDFInfo
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Abstract
The invention discloses preparation method of a kind of double-network hydrogel fiber and products thereof, the preparation method key step of this water absorbent gel fiber includes: the preparation of (1) spinning solution: be dissolved in the water with water soluble acrylamido's polymer by poly-for one or more water-soluble naturals polysaccharide, stir, it is then passed through filter, deaeration, prepares containing natural polysaccharide and the blend spinning stock solution of acrylamide polymer；(2) preparation of aqueous nascent gelatinous fibre: by the blend spinning stock solution obtained by step (1) by wet spinning or dry-wet spinning or gel spinning, spray webbing process is carried out according to predetermined speed, described blend spinning stock solution is mixed into coagulating bath, prepares aqueous nascent gelatinous fibre；(3) crosslinking with radiation: step (2) gained as-spun fibre boundling drawing-off importing ionizing radiation device is carried out crosslinking with radiation, and the operation being then passed through follow-up drawing-off, thermal finalization, winding and shredding prepares double-network hydrogel fiber.
Description
Technical field
The present invention relates to field of high polymer material processing, more particularly, it relates to a kind of double-network hydrogel is fine
Preparation method of dimension and products thereof.
Background technology
At present, aquagel fibre mainly has two classes, a class to be with vinyl hydrophilic polymerics such as acrylate copolymers
Thing is the superabsorbent fiber of main body；Another kind of be natural biomass be one-component or the hydrophilic fibre of multicomponent of main body
Dimension, this two classes aquagel fibre the most only comprises a kind of cross-linked network structure.
The company and the major product thereof that realize superabsorbent fiber industrialized production both at home and abroad specifically include that Britain
Technical Absorbents company's employing Britain Kao Taoer (COURTAULD) and Britain's association colloid are public
Trade name " Oasis " superabsorbent fiber that department's technology produces；Canada's Alberta jar (unit of capacitance) card interests
Camelot Super absorbents company limited uses U.S. A Ke (ARCO) chemical company technology
(USP5026784) trade name " Fibersorb " superabsorbent fiber produced；(TOYOBO) spins in Japan of Japan
Company use Japan Japan spin with its group under Japanese Ai Kesilan company technique produce trade name
" Lanseal-F " superabsorbent fiber, Japan's clock spins (KANEBO) He Xian company and uses clock to spin and Technical
Trade name " BELL OASIS " superabsorbent fiber of Absorbents company technique exploitation and domestic south
Tongjiang tide fibre company limited uses technology (CN1330801C) life of China Textile Academy
Business's name " white orchid " superabsorbent fiber etc. produced.Above-mentioned superabsorbent fiber preparation process all uses high temeperature chemistry
Crosslinking technological or pyrohydrolysis technology, high to equipment requirements, energy expenditure is big, and production cost is high, Yi Zao
Become environmental pollution.And use the superabsorbent fiber mechanical property prepared of polyacrylic poor, need to be with
Other support fiber blend and can be only achieved use requirement.
Patent CN 101787105 B uses click chemistry and atom transfer radical polymerization synchronous reaction to prepare
Network interpenetrating functional aquagel, by the polyalkylene glycol monomer containing three or more than three end alkynyl radicals with at least
Polyalkylene glycol monomer click-reaction containing two endlap nitrilo generates the first polymer network, more meritorious by band
Can group obtain the second polymer network containing double bond monomer by atom transfer radical polymerization.Patent CN
101608006 B are the first monomer with anionic vinyl base monomer, and ultraviolet lighting obtains single network aqueous gel,
This list network aqueous gel is molten in the aqueous solution containing acrylic amide vinyl monomer, cross-linking agent and initiator
Swollen to balance, ultraviolet lighting obtains double-network hydrogel again.Dual network water-setting described in above-mentioned document and patent
The activated monomer that glue mainly uses free radical to cause is polymerized and covalent cross-linking, and gained gel is by the shape of template
Shape and size limitation, be block hydrogel, it is impossible to be processed into fiber, and production efficiency is low, is difficult to industry
Change application.
The present invention utilizes the existing mature technology preparing biomass fiber and equipment, by wet method, wet-dry change
Spinning or gel spinning technology combine rapidly and efficiently crosslinking by ionizing radiation technology, prepare the high-ductility that a class is novel
Property double-network hydrogel fiber.Widen biomass poly-polysaccharide raw material and the deep processing of propionic acid amide. polymer further
And utilization orientation.Products obtained therefrom can be widely applied to the fields such as medical textile, fabrics for industrial use.This
Bright employing seriality irradiation crosslinking technological, is not added with any chemical cross-linking agent, and crosslinking rate is fast, simple to operate,
Production efficiency is high, easily realizes consecutive production, and production process is pollution-free.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned water absorbent gel tenacity of fibre of prior art
Difference, elastic low, stretch easily broken, compress frangible, fiber blend need to be supported with other and use, after fiber
Continuous processing brings the defect of difficulty, and the technology that the present invention uses ionomer and crosslinking by ionizing radiation to combine exists
The equally distributed dual network structure of fibrous inside in-situ construction one, a kind of high tenacity double-network hydrogel of preparation
Fiber, its dry state good toughness, can individually spin, have the strongest water suction and water holding capacity, and bio-compatible
Property is good, and salt tolerance is strong.Gelatinous fibre toughness and elasticity after water absorption and swelling are the most fine.
The technical solution adopted for the present invention to solve the technical problems is: a kind of double-network hydrogel fiber of structure
Preparation method, comprise the following steps:
(1) preparation of spinning solution:
Poly-for one or more water-soluble naturals polysaccharide is dissolved in the water with water soluble acrylamido's polymer, stirs
Mix uniformly, be then passed through filter, deaeration, prepare the mixing containing natural polysaccharide and acrylamide polymer and spin
Silk stock solution；
(2) preparation of aqueous nascent gelatinous fibre:
By the blend spinning stock solution obtained by step (1) by wet spinning or dry-wet spinning or gel
Spinning, carries out spray webbing process according to predetermined speed, and described blend spinning stock solution is mixed into coagulating bath, prepares
Aqueous nascent gelatinous fibre；
(3) crosslinking with radiation:
Step (2) gained as-spun fibre boundling drawing-off importing ionizing radiation device is carried out crosslinking with radiation, so
Double-network hydrogel fiber is prepared by the operation continuing drawing-off, thermal finalization, winding and shredding later.
In the preparation method of double-network hydrogel fiber of the present invention, wherein, described step (3)
Specifically, use cobalt source or electron beam that described nascent gelatinous fibre carries out crosslinking with radiation processing, radiation is total
Dosage is 0.5kGy-50kGy.
In the preparation method of double-network hydrogel fiber of the present invention, wherein, described blend spinning is former
The content of natural polysaccharide described in liquid is 1-8%；The content of described acrylamide polymer is 4-30%；Its
In, natural polysaccharide and propionic acid amide. polymer quality are than for 1:1-1:10.
In the preparation method of double-network hydrogel fiber of the present invention, wherein, described coagulating bath is temperature
Degree is 0 DEG C-50 DEG C, and the 50-100% ethanol water of the metal cation containing 0-10%, described metal
Cation includes at least one in calcium ion, potassium ion, zinc ion, silver ion, barium ions, iron ion.
In the preparation method of double-network hydrogel fiber of the present invention, wherein, described natural polysaccharide
For in alginate, carrageenan, agar or Rhizoma amorphophalli powder any one.
In the preparation method of double-network hydrogel fiber of the present invention, wherein, described acrylamide gathers
The number-average molecular weight of compound is 50000-6000000；Described acrylamide polymer is anionic polypropylene
In amide, cationic-type polyacrylamide, non-ionic polyacrylamide or amphiprotic polyacrylamide any one
Kind.
In the preparation method of double-network hydrogel fiber of the present invention, wherein, described anionic gathers
Acrylamide is the acrylamide based on acrylamide/anionic vinyl base monomer binary or polynary common
Polymers.
In the preparation method of double-network hydrogel fiber of the present invention, wherein, described cationic poly
Acrylamide is the acrylamide based on acrylamide/cationic vinyl monomer binary or polynary common
Polymers.
In the preparation method of double-network hydrogel fiber of the present invention, wherein, described nonionic gathers
Acrylamide is homopolymer and the acrylamide/nonionic based on acrylamide of acrylamide monomers
Type vinyl monomer binary or multiple copolymer.
In the preparation method of double-network hydrogel fiber of the present invention, wherein, described both sexes polypropylene
Amide is the acrylamide based on acrylamide/cationic vinyl monomer/anionic vinyl base
Monomer terpolymer.
The present invention also provides for a kind of double-network hydrogel fibrous material, and this double-network hydrogel fibrous material uses
Above-mentioned preparation method is made.
Implement preparation method of double-network hydrogel fiber of the present invention and products thereof, have following useful
Effect:
1. this method is with resourceful natural polysaccharide and the acrylamide having been carried out large-scale production
Polymer is raw material, and raw material is easy to get, cheap, and product cost is relatively low, and expands natural poly-many further
Sugar and the commercial application scope of acrylamide polymer.
2. this method uses seriality irradiation crosslinking technological, is not added with any chemical cross-linking agent, crosslinking rate
Hurry up, simple to operate, production efficiency is high, easily realizes consecutive production, and process is pollution-free.
3. the aquagel fibre dry state good toughness that prepared by the present invention, can individually spin, have the strongest water suction
And water holding capacity, and good biocompatibility, salt tolerance is strong.Gelatinous fibre toughness after water absorption and swelling and elasticity
The most fine.
Detailed description of the invention
The preparation method of a kind of double-network hydrogel fiber, comprises the following steps:
(1) preparation of spinning solution:
Poly-for one or more water-soluble naturals polysaccharide is dissolved in the water with water soluble acrylamido's polymer, stirs
Mix uniformly, after being then passed through filter, deaeration, prepare and there is certain viscosity, containing 1-8%(mass percent)
Natural polysaccharide and 4-30%(mass percent) the blend spinning stock solution of acrylamide polymer, wherein,
Natural polysaccharide and propionic acid amide. polymer quality are than for 1:1-1:10；
Wherein, described natural polysaccharide is alginate, carrageenan (kappa type carrageenan, Iota OK a karaoke club
Glue), agar or Rhizoma amorphophalli powder etc..The number-average molecular weight of described acrylamide polymer is 50000-6000000；
Described acrylamide polymer is anion-polyacrylamide, cationic-type polyacrylamide, nonionic
In polyacrylamide or amphiprotic polyacrylamide any one.
Described anion-polyacrylamide specifically includes that acrylamide and sodium acrylate copolymer, acryloyl
Amine-Sodium methacrylate. copolymer, acrylamide-Sodium styrene sulfonate copolymer etc. is based on acrylamide
Acrylamide/anionic vinyl base monomer binary or multiple copolymer.
Described water-soluble cationic polyacrylamide specifically includes that nitrile-acrylamide-acrylic acid acyloxyethyl three
Ammonio methacrylate copolymer, acrylamide-MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride copolymer, propylene
Amide-methacrylamidopropyltrimethyl trimethyl ammonium chloride copolymer, acrylamide-diallydimethyl chlorine
Acrylamide/cationic vinyl monomer the binary or polynary based on acrylamide such as change ammonium copolymer
Copolymer
Described non-ionic polyacrylamide specifically includes that acrylamide, NIPA, N, N-
DMAA, N-(methylol) acrylamide, the acrylamide monomers such as N-[2-(2-methyl-4-oxopentyl)
Homopolymer and acrylamide/non-ionic vinyl monomer binary or polynary common based on acrylamide
Polymers.
Described amphiprotic polyacrylamide specifically includes that acrylic amide-acrylic sodium-acrylyl oxy-ethyl-trimethyl
Ammonium chloride copolymer, acrylic amide-acrylic sodium-MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride copolymer,
Acrylic amide-acrylic sodium-methacrylamidopropyltrimethyl trimethyl ammonium chloride copolymers etc. are with acrylamide
Acrylamide/cationic vinyl monomer/anionic vinyl base monomer terpolymer for main body.
(2) preparation of aqueous nascent gelatinous fibre:
By the blend spinning stock solution obtained by step (1) by wet spinning or dry-wet spinning or gel
Spinning enters one or more metal cations containing 0-10% with the speed spray webbing of 10-120m/min
The coagulating bath of 50-100% ethanol water, described coagulation bath temperature is 0-50 DEG C, prepares aqueous nascent gel
Fiber；Described metal cation include calcium ion, potassium ion, zinc ion, silver ion, barium ions, ferrum from
At least one in son.
(3) crosslinking with radiation:
Step (2) gained as-spun fibre boundling drawing-off importing ionizing radiation device is carried out crosslinking with radiation, adopts
With cobalt source (60Co) or crosslinking electron beam irradiation, total radiation dose is 0.5kGy-50kGy, is then passed through
The operations such as follow-up drawing-off, thermal finalization, winding and shredding prepare double-network hydrogel fiber.
The present invention also provides for a kind of double-network hydrogel fibrous material, and this double-network hydrogel fibrous material uses
Above-mentioned preparation method is made.
Below in conjunction with specific embodiment, the present invention is expanded on further.These embodiments are merely to illustrate the present invention
Rather than restriction the scope of the present invention.
Case study on implementation 1
Weigh a certain amount of sodium alginate and polyacrylamide (molecular weight is 2,000,000-2,500,000),
Quickly stirring room temperature is dissolved in the water, and filters, vacuum deaerator, prepares and gathers containing 2% sodium alginate and 12%
The spinning solution of acrylamide, wherein, sodium alginate and polyacrylamide mass ratio are 1:6.By dry-
Spinning solution is entered the 80%wt ethanol containing 5%wt calcium sulfate with the speed spray webbing of 30m/min by wet spinning
Being frozen into as-spun fibre in aqueous solution, wherein, air gap length is 2cm, and barrel temperature is maintained at 70 DEG C of left sides
The right side, coagulation bath temperature is about 25 DEG C, and hauling speed and spray webbing speed are than for 1.5:1.Then, nascent fibre
Dimension boundling drawing-off importing cobalt source (60Co) irradiation devices, carry out continuous irradiation crosslinking, and irradiation accumulated dose is
50kGy.A kind of high tenacity double-network hydrogel is prepared fine through operations such as follow-up drawing-off, thermal finalization and windings
Dimension, and numbered sample 1.
Case study on implementation 2
(molecular weight is to weigh a certain amount of Iota type carrageenan and polyacrylamide
5,000,000-6,000,000), quick stirring and dissolving, in the water of 70 DEG C, filters, vacuum deaerator, system
2%Iota type carrageenan and the spinning solution of 8% polyacrylamide, wherein, carrageenan and poly-third must be contained
Acrylamide mass ratio is 1:4.By gel spinning, spinning solution is entered with the speed spray webbing of 30m/min
In 50%wt ethanol water, it is frozen into as-spun fibre.Wherein, barrel temperature is maintained at about 70 DEG C, solidifying
Gu bath temperature is about 0 DEG C, hauling speed and spray webbing speed are than for 1.5:1.Then, as-spun fibre boundling
Drawing-off imports electron beam irradiation, carries out continuous irradiation crosslinking, and irradiation accumulated dose is 10kGy.Finally,
Prepare a kind of high tenacity double-network hydrogel fiber through operations such as follow-up drawing-off, thermal finalization and windings, and compile
Number it is sample 2.
Case study on implementation 3
(molecular weight is to weigh a certain amount of Kappa type carrageenan and polyacrylamide
1,000,000-1,500,000), quick stirring and dissolving, in the water of 80 DEG C, filters, vacuum deaerator, system
Must contain 2%Kappa type carrageenan and the spinning solution of 16% polyacrylamide, wherein, K-type carrageenan with
Polyacrylamide mass ratio is 1:8.By dry-wet spinning, spinning solution is sprayed with the speed of 120m/min
Silk enters in the 50%wt ethanol water containing 10%wt barium chloride, is frozen into as-spun fibre, wherein, and air
Layer distance is 2cm, and barrel temperature is maintained at about 70 DEG C, and coagulation bath temperature is about 25 DEG C, traction speed
Spend with spray webbing speed ratio for 1.5:1.Then, as-spun fibre boundling drawing-off imports electron beam irradiation, enters
Row continuous irradiation cross-links, and irradiation accumulated dose is 5kGy.Finally, through follow-up drawing-off, thermal finalization and winding
A kind of high tenacity double-network hydrogel fiber, and numbered sample 3 is prepared etc. operation.
Case study on implementation 4
Weigh a certain amount of agar and nitrile-acrylamide-acrylic acid acyloxyethyl trimethyl ammonium chloride copolymer (molecule
Amount is 50,000-100,000), quick stirring and dissolving, in the water of 85 DEG C, filters, vacuum deaerator, system
3% agar and the spinning solution of 30% polyacrylamide, wherein, agar and acrylamide polymer matter must be contained
Amount ratio is 1:10.By wet spinning, spinning solution is entered 80%wt second with the speed spray webbing of 10m/min
In alcohol-water solution, being frozen into as-spun fibre, wherein, barrel temperature is maintained at about 85 DEG C, solidifies bath temperature
Degree is about 50 DEG C, and hauling speed and spray webbing speed are than for 1:1.Then, the drawing-off of as-spun fibre boundling imports
Electron beam irradiation, carries out continuous irradiation crosslinking, and irradiation accumulated dose is 5kGy.Finally, through follow-up
The operations such as drawing-off, thermal finalization and winding prepare a kind of high tenacity double-network hydrogel fiber, and numbered sample
4。
Case study on implementation 5
(molecular weight is to weigh a certain amount of Rhizoma amorphophalli powder and acrylamide-sodium acrylate copolymer
1,000,000-1,500,000, sodium acrylate and the proportion of acylamide are 1:9), quick stirring and dissolving
Yu Shuizhong, filters, vacuum deaerator, prepares containing 2% Rhizoma amorphophalli powder and 12% acrylic amide-acrylic sodium copolymerization
The spinning solution of thing, wherein, Rhizoma amorphophalli powder and acrylamide-sodium acrylate copolymer mass ratio are 1:6.Logical
Cross wet spinning and spinning solution is entered in 80%wt ethanol water with the speed spray webbing of 30m/min, solidification
Becoming as-spun fibre, wherein, barrel temperature is maintained at about 50 DEG C, and coagulation bath temperature is about 25 DEG C, leads
Draw speed and spray webbing speed than for 1.5:1.Then, as-spun fibre boundling drawing-off imports electron beam irradiation,
Carrying out continuous irradiation crosslinking, irradiation accumulated dose is 5kGy.Finally, through follow-up drawing-off, thermal finalization and volume
Around etc. operation prepare a kind of high tenacity double-network hydrogel fiber, and numbered sample 5.
Case study on implementation 6
Weigh a certain amount of Iota type carrageenan and acrylamide-biacetone acrylamide copolymer (molecular weight
It is 5,000,000-6,000,000), quick stirring and dissolving, in the deionized water of 70 DEG C, filters, decompression
Deaeration, prepares spinning containing 1%Iota type carrageenan and 4% acrylamide-biacetone acrylamide copolymer
Silk stock solution, wherein, carrageenan and acrylamide-biacetone acrylamide copolymer mass ratio are 1:4.Logical
Cross gel spinning and spinning solution is entered in 50%wt ethanol water with the speed spray webbing of 30m/min, solidification
Become as-spun fibre.Wherein, barrel temperature is maintained at about 70 DEG C, and coagulation bath temperature is about 0 DEG C, traction
Speed and spray webbing speed are than for 2.0:1.Then, as-spun fibre boundling drawing-off imports electron beam irradiation,
Carrying out continuous irradiation crosslinking, irradiation accumulated dose is 0.5kGy.Finally, through follow-up drawing-off, thermal finalization and
The operations such as winding prepare a kind of high tenacity double-network hydrogel fiber, and numbered sample 6.
Case study on implementation 7
(molecular weight is to weigh a certain amount of sodium alginate and acrylamide-sodium acrylate copolymer
3,000,000-4,000,000), quick stirring and dissolving, in deionized water, filters, vacuum deaerator, prepares
Containing 6% sodium alginate and the spinning solution of 6% acrylamide-sodium acrylate copolymer, wherein, sodium alginate
It is 1:1 with acrylamide-sodium acrylate copolymer mass ratio.By wet spinning by spinning solution with
The speed spray webbing of 30m/min enters in the 80%wt ethanol water containing 10%wt calcium chloride, is frozen into nascent
Fiber, wherein, barrel temperature is maintained at about 50 DEG C, and coagulation bath temperature is about 25 DEG C, hauling speed
With spray webbing speed than for 1.5:1.Then, as-spun fibre boundling drawing-off imports electron beam irradiation, carries out
Continuous irradiation cross-links, and irradiation accumulated dose is 5kGy.Finally, through follow-up drawing-off, thermal finalization and winding etc.
Operation prepares a kind of high tenacity double-network hydrogel fiber, and numbered sample 7.
Case study on implementation 8
Weigh a certain amount of Kappa type carrageenan and acrylamide-DMAA copolymer (molecule
Amount is 2,000,000-2,500,000), quick stirring and dissolving, in the deionized water of 70 DEG C, filters, subtracts
Pressure-off is steeped, and prepares containing 3%Kappa type carrageenan and 15% acrylamide-DMAA copolymer
Spinning solution, wherein, carrageenan and acrylamide-DMAA copolymer quality are than for 1:5.
By wet spinning, spinning solution is entered the 80%wt containing 5%wt silver nitrate with the speed spray webbing of 30m/min
In ethanol water, it is frozen into as-spun fibre.Wherein, barrel temperature is maintained at about 70 DEG C, coagulating bath
Temperature is about 25 DEG C, and hauling speed and spray webbing speed are than for 1.5:1.Then, as-spun fibre boundling drawing-off
Importing cobalt source bundle irradiation devices, carry out continuous irradiation crosslinking, irradiation accumulated dose is 30kGy.Finally, pass through
The operations such as follow-up drawing-off, thermal finalization and winding prepare a kind of high tenacity double-network hydrogel fiber, and numbered
Sample 8.
The properties of sample comparison sheet of each case study on implementation will be enumerated below, with properties of product ratio of the prior art
Relatively, according to the toughness height of 8 kinds of samples prepared by preparation method of the present invention, good springiness, it is better than existing
Water-absorption fiber.
The Performance comparision of table each sample
Gelatinous fibre fracture strength refers to that the peak load that can bear during break of CFRP represents with cN/dtex,
Use dry, the hygrometric state tensile property of Intron5566 universal testing machine test fiber.
Inhale pure water multiplying power to refer to be placed in pure water unit mass dry fibers, absorb water to be absorbed during swelling equilibrium
The weight (g/g) of water.
Inhale normal saline to refer to unit mass dry fibers is placed in 0.9%(mass percent) aqueous sodium chloride
In liquid, the weight (g/g) of the normal saline absorbed when absorbing to swelling equilibrium.
The aquagel fibre fracture strength of aqueous 85% refers to be placed in appropriate pure water dry fibers, absorbs water swollen
The hygrometric state fiber of swollen gained, its water content is about 85%(mass fraction), this hygrometric state break of CFRP time institute energy
Bear peak load represent with kPa.
Elongation at break refers to the ratio of the sample shift value when breaking and former length, as a percentage (%),
In order to the toughness of sample and elastic index to be described.
Preparing dual network gelatinous fibre according to preparation method of the present invention in the present invention is a kind of double net
Network aquagel fibre, is not superabsorbent fiber, mainly emphasizes high tenacity and the elasticity of hygrometric state hydrogel.This pair
The fibrous fracture intensity of network gel fiber is suitable with the fracture strength of biomass water-absorption fiber in prior art,
Slightly above based on the superabsorbent fiber of acrylic compounds hydrophilic polymer；Described double-network hydrogel fiber
Water suction with inhale normal saline ability be slightly below existing water-absorption fiber, but, the hydrogel of aqueous 85%
The mechanical property of fiber is better than existing water-absorption fiber, and toughness is high, good springiness.This double-network hydrogel is described
Fiber has the strongest water suction and water holding capacity, and salt tolerance is strong, the hygrometric state tenacity of fibre after water absorption and swelling is high,
Good springiness.
Above embodiments of the invention are described, but the invention is not limited in above-mentioned concrete reality
Executing mode, above-mentioned detailed description of the invention is only schematic rather than restrictive, this area general
Logical technical staff is under the enlightenment of the present invention, without departing from present inventive concept and scope of the claimed protection
In the case of, it may also be made that a lot of form, within these belong to the protection of the present invention.
Claims (11)
1. the preparation method of a double-network hydrogel fiber, it is characterised in that comprise the following steps:
(1) preparation of spinning solution:
Poly-for one or more water-soluble naturals polysaccharide is dissolved with water soluble acrylamido's polymer
Yu Shuizhong, stirs, and is then passed through filter, deaeration, prepares containing natural polysaccharide and propylene
The blend spinning stock solution of amide polymer；
(2) preparation of aqueous nascent gelatinous fibre:
By the blend spinning stock solution obtained by step (1) by wet spinning or dry-wet spinning
Or gel spinning, carries out spray webbing process according to predetermined speed, by described blend spinning stock solution
It is mixed into coagulating bath, prepares aqueous nascent gelatinous fibre；
(3) crosslinking with radiation:
Step (2) gained as-spun fibre boundling drawing-off importing ionizing radiation device is radiated
Crosslinking, the operation being then passed through follow-up drawing-off, thermal finalization, winding and shredding prepares dual network
Aquagel fibre.
The preparation method of double-network hydrogel fiber the most according to claim 1, its feature exists
In, described step (3) is specifically, use cobalt source or electron beam fine to described nascent gel
Dimension carries out crosslinking with radiation processing, and total radiation dose is 0.5kGy-50kGy.
The preparation method of double-network hydrogel fiber the most according to claim 1, it is characterised in that
Described in described blend spinning stock solution, the content of natural polysaccharide is 1-8%；Described acrylamide
The content of polymer is 4-30%；Wherein, natural polysaccharide and acrylamide polymer mass ratio
For 1:1-1:10.
The preparation method of double-network hydrogel fiber the most according to claim 1, it is characterised in that
Described coagulating bath be temperature be 0 DEG C-50 DEG C, and the metal cation containing 0-10%
50-100% ethanol water, described metal cation include calcium ion, potassium ion, zinc ion,
At least one in silver ion, barium ions, iron ion.
The preparation method of double-network hydrogel fiber the most according to claim 1, it is characterised in that
Described natural polysaccharide be in alginate, carrageenan, agar or Rhizoma amorphophalli powder any one.
The preparation method of double-network hydrogel fiber the most according to claim 1, it is characterised in that
The number-average molecular weight of described acrylamide polymer is 50000-6000000；Described acrylamide
Polymer is anion-polyacrylamide, cationic-type polyacrylamide, nonionic poly-third
In acrylamide or amphiprotic polyacrylamide any one.
The preparation method of double-network hydrogel fiber the most according to claim 6, its feature exists
In, described anion-polyacrylamide be acrylamide/the moon based on acrylamide from
Subtype vinyl monomer binary or multiple copolymer.
The preparation method of double-network hydrogel fiber the most according to claim 6, its feature exists
In, described cationic-type polyacrylamide be acrylamide/sun based on acrylamide from
Subtype vinyl monomer binary or multiple copolymer.
The preparation method of double-network hydrogel fiber the most according to claim 6, its feature exists
It is the homopolymer of acrylamide monomers and with acryloyl in, described non-ionic polyacrylamide
Amine is acrylamide/non-ionic vinyl monomer binary or the multiple copolymer of main body.
The preparation method of double-network hydrogel fiber the most according to claim 6, its feature exists
In, described amphiprotic polyacrylamide is the acrylamide/cationic based on acrylamide
Vinyl monomer/anionic vinyl base monomer terpolymer.
11. use the double-network hydrogel that the preparation method as described in claim 1-10 is arbitrary is made
Fibrous material.
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| CN105601950B (en) * | 2015-11-05 | 2018-03-23 | 湖北工业大学 | A kind of preparation method of the high-strength natural hydrogel material of sodium alginate agar dual network |
| DE102016102494A1 (en) * | 2016-02-12 | 2017-08-17 | Poromembrane Gmbh | Filamentherstellvorrichtung |
| CN106381571B (en) * | 2016-08-25 | 2018-08-14 | 中国工程物理研究院化工材料研究所 | A kind of PEDOT:PSS fibers and preparation method thereof |
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