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

A technology of regenerated silk and coagulation bath, applied in the fields of textile fiber, protein chemistry, material science, and bionics, it can solve problems such as pure silk protein aqueous solution that has not yet been seen, achieve excellent mechanical properties, avoid pollution and harm, and control degradation. Effect

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 have not seen the successful example of carrying out artificial spinning with pure silk protein aqueous solution so far

Method used

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  • Regenerated silk fiber with salt solution as coagulating bath and method for preparing same
  • Regenerated silk fiber with salt solution as coagulating bath and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Using 13% regenerated silk protein aqueous solution as the spinning dope, 40% (NH 4 ) 2 SO 4 The solution is used as a coagulation bath for wet spinning, and the spinning temperature is 25°C. The obtained regenerated silk fiber has a residence time of 8 minutes in the coagulation bath and is stretched to 4 times the original length, washed with water and dried. Then, it was stretched for 1 time in hot water at 90°C, and then dried by steam treatment at 120°C. The obtained regenerated silk fiber had a breaking strength of 0.5 GPa and a breaking elongation of 22%.

Embodiment 2

[0019] Example 2: Using a 20% concentration of regenerated silk protein aqueous solution as the spinning dope, using 20% ​​Na 2 SO 4 The solution (adjust the pH to 4.0) is used as a coagulation bath for wet spinning, and the spinning temperature is 10°C. The obtained regenerated silk fiber has a residence time of 10 minutes in the coagulation bath and is stretched to 5 times the initial length, washed with water and dried. Then, it was stretched 1 times in hot water at 80°C, and then dried by steam treatment at 130°C. The obtained regenerated silk fiber had a breaking strength of 0.4 GPa and a breaking elongation of 20%.

Embodiment 3

[0020] Example 3: Using a 30% concentration of regenerated silk protein aqueous solution as the spinning dope, using saturated Zn 2 SO 4 The solution is used as a coagulation bath for wet spinning, and the spinning temperature is 40°C. The obtained regenerated silk fiber has a residence time of 5 minutes in the coagulation bath, stretched to 4 times the initial length, washed with water, and dried. Then it was stretched for 2 times in hot water at 70°C, and then dried after steam treatment at 110°C. The obtained regenerated silk fiber had a breaking strength of 0.3 GPa and a breaking elongation of 15%.

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Abstract

This invention adopts wet way filature to prepare a high capability rebirth silk fibre method according to raw material used with industry scrap silk. The method take the high chroma rebirth silk protein water liquor (10-40%) with filature former liquor, take the quite high inorganic salt acidity water liquor with curdle liquor. Then get the excellent mechanics capability rebirth silk fibre after wet way filature and extending, heat manage. In this way, rebirth silk fibre have blare of nature silk fibre and excellent synthesis mechanics capability. The rupture intention can get 0.6Gpa and rupture elongate rate can be 30%. This invention has the trait that is abroad raw material source, low cost and simple filature process, green environment protecting.

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 dope, a higher-concentration inorganic hydrochloric acid solution as a coagulation bath, and wet spinning High-performance regenerated silk fiber obtained from silk and a preparation method thereof. Background technique [0002] Spider silk has always attracted the research interest of many scientists with its excellent mechanical properties. Its comprehensive mechanical properties exceed any current man-made fibers and can be used in areas with special performance requirements such as bulletproof vests. But so far, natural spider silk cannot be obtained in large quantities, and because of its broad application prospects in the field of high-performance materials, artificial preparation of fiber materials with excellent mechanical properties ...

Claims

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Application Information

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