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High-strength alginate composite fiber, and preparation method and use thereof

An alginate and composite fiber technology, applied in the direction of alginate man-made filaments, etc., can solve the problems of unsuitable fiber downstream textile processing, poor biocompatibility, and high moisture content of primary fibers, and achieve enhanced entanglement and interlacing. Combined action, improve strength and elasticity, good biocompatibility

Inactive Publication Date: 2017-05-24
吴玉松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the technical solutions using chemical covalent crosslinking disclosed above can prepare alginate fibers with relatively uniform structure, stability, no phase separation, and good mechanical properties, the crosslinking agents or other auxiliary agents used are all prepared. Complicated methods, difficult to control reactivity, colored products, high residual toxicity, poor biocompatibility and other defects are not conducive to the application of alginate fiber in the field of medical health or beauty
[0006] The prior art also shows that when calcium chloride aqueous solution is used as the coagulation bath, due to the high water absorption and water retention of alginate, the water content in the primary fiber is high, which not only makes it difficult to dehydrate and dry in the later stage, but also takes time and energy. Serious problem, not suitable for downstream textile processing of fibers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of high-strength alginate composite fiber.

[0031] 1) Preparation of spinning dope. Weigh sodium alginate (G / M=2.0) according to the target concentration, put it into water, stir it at 60ºC to dissolve it completely, leave it in vacuum for 24 hours, and get 6% (mass concentration, the same below) seaweed The spinning solution of sodium bicarbonate was kept warm at 60°C for later use.

[0032] 2) Wet spinning. Squeeze the above spinning stock solution into a coagulation bath composed of 96% industrial alcohol and 6% calcium chloride aqueous solution in a mixing ratio of 1:1 (mass ratio), and then stretch and wash and drying to obtain alginate composite fiber. During the wet spinning process, the temperature of the coagulation bath was controlled at 40ºC, and ultrasonic waves with a frequency of 28 kHz were applied at the bottom of the coagulation tank.

[0033] In this example, no cross-linking agent was added to the spinning solution. The algin...

Embodiment 2

[0035] A preparation method of high-strength alginate composite fiber.

[0036] 1) Preparation of spinning dope. Weigh sodium alginate (G / M=2.0) and carboxymethyl chitosan calcium according to the target concentration, put them into water, add stirring at 60ºC to dissolve them completely, and vacuum defoam for 24 hours to obtain 4% alginic acid Composite spinning solution of sodium and 0.5% calcium carboxymethyl chitosan, kept at 60ºC for later use.

[0037] 2) Wet spinning. Squeeze the above spinning stock solution into a coagulation bath composed of 96% industrial alcohol and 20% calcium chloride aqueous solution in a mixing ratio of 4:1 (mass ratio), and then stretch and wash and drying to obtain alginate composite fiber. During the wet spinning process, the temperature of the coagulation bath was controlled at 40ºC, and ultrasonic waves with a frequency of 28 kHz were applied at the bottom of the coagulation tank.

[0038] The alginate fiber prepared according to the a...

Embodiment 3

[0040] A preparation method of high-strength alginate composite fiber.

[0041] 1) Preparation of spinning dope. Weigh sodium alginate (G / M=1.2) and carboxymethyl chitosan zinc according to the target concentration, put them into water, stir them at 60ºC to dissolve them completely, and leave them in vacuum for 24 hours to obtain 8% Composite spinning solution of sodium alginate and 1% zinc carboxymethyl chitosan, kept at 40ºC for later use.

[0042] 2) Wet spinning. Squeeze the above spinning stock solution into a coagulation bath composed of 40% ethanol aqueous solution and 30% calcium chloride aqueous solution at a mixing ratio of 10:1 (mass ratio), and then stretch and wash and drying to obtain alginate composite fiber. During the wet spinning process, the temperature of the coagulation bath was controlled at 40ºC, and ultrasonic waves with a frequency of 60 kHz were applied at the bottom of the coagulation tank.

[0043] The alginate fiber prepared according to the ab...

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Abstract

The invention relates to a high-strength bio-based fiber technology, and especially relates to a preparation method of an alginate composite fiber used in medical treatment and beauty treatment. The preparation method comprises the following steps: adding water-soluble alginate and a biological cross-linking agent which are mixed according to a certain ratio to water, heating and stirring the obtained water to uniform dissolve the water-soluble alginate and the biological cross-linking agent, and defoaming the obtained solution to obtain a composite spinning solution; and extruding the obtained spinning stock solution into coagulation bath formed by mixing an ethanol solution and a calcium chloride solution, and carrying out wet spinning. The fracture strength of the alginate composite fiber reaches 4-10 cN / detx, and the elongation at break is 14-20%. The biological cross-linking agent adopted in the invention is carboxymethyl chitosan calcium or carboxymethyl chitosan zinc, so the composite fiber has high mechanical strength and good processibility (spinnability and knittability), and keeps the original characteristics of low toxicity, wound healing promotion, good biocompatibility and high safety of alginates.

Description

technical field [0001] The invention relates to a high-strength bio-based fiber technology, in particular to a preparation method of an alginate composite fiber used for medical treatment and beauty, and belongs to the technical field of polymer material processing and textile. Background technique [0002] Alginic acid is produced by linear polymerization of monouronic acid whose monomers are β-1,4-D-mannuronic acid (M) and α-1,4-L-guluronic acid (G). into high molecular weight polysaccharides. Wherein, M and G units are connected by 1,4 glycosidic bonds in the combination of M-M, G-G or M-G to form a block copolymer. Alginic acid is usually produced by the reaction of brown algae marine organisms such as kelp, sargasso, Ascophyllum nodosum, macroalgae, etc. with sodium hydroxide and strong acids such as sulfuric acid, and finally converted to sodium alginate through appropriate chemical transformation The soluble alginate form of potassium alginate or potassium alginate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/04
Inventor 吴玉松
Owner 吴玉松
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