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Preparation method of ionic liquid keratin spinning solutions

A technology of ionic liquid and keratin, which is applied in the field of regeneration and utilization of biomass resources, can solve the problems of low keratin strength, unrecyclable, and environmental pollution

Active Publication Date: 2014-04-09
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of simple animal hair keratin strength, and the shortcomings of acid, alkali and salt produced in the keratin extraction process, which cannot be recovered and pollute the environment, and to invent a simple and pollution-free ionic liquid preparation The method of keratin spinning solution, and meet the requirements of wet spinning for the performance of spinning solution

Method used

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  • Preparation method of ionic liquid keratin spinning solutions

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Weigh 2.2050g of degreased and dried goat hair, add it to 32.1018g of 1,3-diethylimidazolium diethyl phosphate ionic liquid, then add 0.1660g of polyvinyl alcohol, and mechanically stir for 30min in an oil bath at 120°C to obtain Viscous keratin spinning solution (stirred with a glass rod to form filaments; extruded thin filaments with a syringe).

Embodiment 2

[0014] Weigh 2.6200g of degreased and dried yak hair, add it to 28.6327g of 1-butyl-3-methylimidazolium dimethyl phosphate ionic liquid, then add 0.1100g of polyacrylonitrile, and mechanically stir in an oil bath at 110°C for 40min , to obtain a viscous keratin spinning solution (stirred with a glass rod to form a filament; extrude a thin filament with a syringe).

Embodiment 3

[0016] Weigh 3.0326g of degreased and dried sheep wool, add it to 26.4700g of 1-butyl-3-methylimidazolium dibutyl phosphate ionic liquid, then add 0.1345g of natural hemp fiber, and mechanically stir in an oil bath at 130°C for 50min , to obtain a viscous keratin spinning solution (stirred with a glass rod to form a filament; extrude a thin filament with a syringe).

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Abstract

The invention provides a method for preparing spinning solutions by using ionic liquid for dissolving animal keratin. Raw materials comprise pig hair, goat hair, sheep wool, cony hair, yak hair and wool without spinning and utilization values. A series of phosphate ester ionic liquid or acetic acid ionic liquid are used for dissolving wool keratin. The method comprises the following steps: washing the raw materials with water, degreasing, drying, crushing, adding 1-17wt% of raw material powder to the ionic liquid according to a certain ratio, adding 1-10wt% of additive, and carrying out mechanical stirring for 30-60 minutes at a temperature of 90-130 DEG C, thus obtaining the keratin spinning solutions with different concentrations. The preparation method has the advantages that the phosphate ester ionic liquid or the acetic acid ionic liquid is used as a solvent, the synthesis is simple, the dissolving process is easy to operate, the ionic liquid recycling is easy, the waste animal hair can be fully utilized, the raw materials are easy to obtain and low in cost, and the pollution of waste to environments can be reduced.

Description

Technical field: [0001] The invention belongs to the field of regeneration and utilization of biomass resources, and relates to a preparation technology of animal hair keratin spinning solution, in particular to a method for preparing keratin spinning solution by mixing ionic liquid and auxiliary agent to dissolve animal hair keratin. Background technique: [0002] The chemical essence of animal hair is keratin. Keratin is a fibrous protein whose basic components are various α-amino acids. Amino acids form long polypeptide chains through peptide bonds, and these long chains pass through disulfide bonds, hydrogen bonds, salt The spatial configuration of keratin is formed by horizontal linkages such as formula bonds, ester bonds, and van der Waals forces, making keratin a tortuous and cross-linked α-helical three-dimensional structure, and forming crystalline and amorphous regions of fibers, and its structure is extremely complex and dense. . The solubilization technology of ...

Claims

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Application Information

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IPC IPC(8): D01F4/00D01F1/00C08H1/06
Inventor 聂毅张锁江张香平白璐何宏艳黄金成
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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