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Regenerated silk fiber with alcohols as coagulating bath and method for preparing same

A technology of regenerated silk and coagulation bath, which is applied in the fields of textile fiber, protein chemistry, material science, and bionics. It can solve the problems of low mechanical properties of rayon, achieve excellent mechanical properties, avoid pollution and harm, and reduce production costs.

Inactive Publication Date: 2005-09-07
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, the mechanical properties of artificial silk obtained by artificial spinning no matter whether recombinant silk protein, regenerated silk protein or chemically synthesized silk protein mimics are far lower than natural silk or spider silk

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: use a regenerated silk protein aqueous solution with a concentration of 30% as a spinning stock solution, and use a 50% methanol solution as a coagulation bath to carry out wet spinning. The obtained regenerated silk fiber is kept in the coagulation bath for 5 minutes and stretched to 4 times of the original length, washed with water and then dried. Then continue stretching by 1 time in hot water at 80°C, and then dry after steam treatment at 120°C. The breaking strength of the obtained regenerated silk fiber is 0.1GPa, and the breaking elongation is 10%.

Embodiment 2

[0014] Example 2: use 20% regenerated silk protein aqueous solution as spinning stock solution, and use 75% ethanol solution as coagulation bath to carry out wet spinning. The obtained regenerated silk fiber stays in the coagulation bath for 10 minutes, during which it is stretched twice to 4 times the original length, washed with water and then dried. Then continue stretching by 1 time in hot water at 80°C, and then dry after steam treatment at 110°C. The breaking strength of the obtained regenerated silk fiber is 0.1GPa, and the breaking elongation is 15%.

Embodiment 3

[0015] Embodiment 3: use 10% regenerated silk protein aqueous solution as spinning stock solution, and use 90% isopropanol solution as coagulation bath to carry out wet spinning. The obtained regenerated silk fiber stays in the coagulation bath for 15 minutes, during which it is stretched twice to twice the original length, washed with water and then dried. Then continue stretching twice in hot water at 90°C, and then dry it after being treated with water vapor at 130°C. The breaking strength of the obtained regenerated silk fiber is 0.15GPa, and the breaking elongation is 10%.

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PUM

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Abstract

This invention is a rebirth silk fibre and preparation method. Silk is broad use because of excellent mechanics capability. But the produce is work force denseness and high cost. This invention take the raw material used high chroma rebirth silk protein water liquor (10-40%) with filature former liquor from industry scrap silk to process wet way filature. And adopt pure compound or multi-pure polymer water liquor to process concreting. This invention have some trait: abroad raw material source, high capability rebirth silk fibre, low cost, blare of nature silk and simple filature process, green environment protecting. In this method, rebirth silk fibre's rupture intention can get 0.1~1.0Gpa and its rupture elongate rate can be 10%-60%.

Description

technical field [0001] The invention belongs to the technical fields of textile fiber, material science, bionics, and protein chemistry, and specifically relates to a high-concentration regenerated silk protein aqueous solution as a spinning stock solution, and an alcohol compound or polyol polymer and its aqueous solution as a coagulation bath. A high-performance regenerated silk fiber obtained by wet spinning and a preparation method thereof. Background technique [0002] As an excellent fiber material, natural silk has attracted much attention and has been widely used because of its softness, good air permeability, and comfortable wearing. In recent decades, the application of silk protein in other fields has become increasingly broad, and its scope has involved food, medicine, biotechnology and daily chemical industry. However, the raw material cost of natural silk is relatively high and strictly limited by seasons. At the same time, another natural silk fiber—spider s...

Claims

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Application Information

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IPC IPC(8): D01D5/06D01F4/02
Inventor 陈新周丽邵正中林江滨姚晋荣
Owner FUDAN UNIV
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