Preparation method for regenerated fibroin fiber

A technology for regenerating silk fibroin and protein fibers, which is applied in the field of preparation of regenerated silk protein fibers, can solve the problems of excessive waste liquid, cumbersome steps, and not conforming to the new concept of low-carbon environmental protection, etc., and achieve the goal of reducing production costs and controlling protein Degradation effect

Inactive Publication Date: 2011-09-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this spinning process, a buffer system is needed to adjust the pH value of the regenerated silk fibroin protein solution. The steps are cumbersome and accompanied by more waste liquid (such as pH buffer), which is not in line with the current development of new materials. The new concept of low-carbon environmental protection required

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Preparation of spinning solution:

[0022] (1) the silkworm cocoon is 0.3% Na by mass percent 2 CO 3 After the aqueous solution is degummed, it is dissolved in a lithium bromide aqueous solution with a molar concentration of 9.0mol / L to obtain a regenerated silk fibroin-lithium bromide aqueous solution;

[0023] (2) centrifuging, filtering, dialysis and concentrating the solution to obtain a pure regenerated silk fibroin aqueous solution with a mass percentage of 18%;

[0024] (3) Adding an aqueous solution of calcium chloride with a molar concentration of 1.5mol / L in the pure regenerated silk fibroin aqueous solution to obtain a regenerated silk fibroin aqueous solution with a calcium ion molar concentration of 0.15mol / L; (4) continue to concentrate to make the regenerated silk The mass percentage of plain protein was 50%, and the spinning solution was obtained.

[0025] Preparation of regenerated silk protein fibers:

[0026] When the temperature is 5°C, the spinn...

Embodiment 2

[0029] Preparation of spinning solution:

[0030] (1) the silkworm cocoon is 0.7% Na by mass percent 2 CO 3 After the aqueous solution is degummed, it is dissolved in a lithium bromide aqueous solution with a molar concentration of 9.5mol / L to obtain a regenerated silk fibroin-lithium bromide aqueous solution;

[0031] (2) centrifuging, filtering, dialysis and concentrating the solution to obtain a pure regenerated silk fibroin aqueous solution with a mass percentage of 20%;

[0032] (3) Adding an aqueous solution of calcium chloride with a molar concentration of 3.0mol / L in the pure aqueous solution of regenerated silk fibroin to obtain an aqueous solution of regenerated silk fibroin with a molar concentration of calcium ions of 0.3mol / L; (4) continue to concentrate to make the regenerated silk The mass percentage of plain protein was 60%, and the spinning solution was obtained.

[0033] Preparation of regenerated silk protein fibers:

[0034] When the temperature is 35°C...

Embodiment 3

[0037] Preparation of spinning solution:

[0038] (1) the silkworm cocoon is 0.5% Na by mass percentage 2 CO 3 After the aqueous solution is degummed, it is dissolved in a lithium bromide aqueous solution with a molar concentration of 9.2mol / L to obtain a regenerated silk fibroin-lithium bromide aqueous solution;

[0039] (2) centrifuging, filtering, dialysis and concentrating the solution to obtain a pure regenerated silk fibroin aqueous solution with a mass percentage of 19%;

[0040] (3) Adding an aqueous solution of calcium chloride with a molar concentration of 3.0mol / L in the pure aqueous solution of regenerated silk fibroin to obtain an aqueous solution of regenerated silk fibroin with a molar concentration of calcium ions of 0.3mol / L; (4) continue to concentrate to make the regenerated silk The mass percentage of plain protein was 53%, and the spinning solution was obtained.

[0041] Preparation of regenerated silk protein fibers:

[0042] When the temperature is 2...

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Abstract

The invention relates to a preparation method for regenerated fibroin fiber, which comprises the following steps: taking regenerated fibroin water solution containing calcium ions as spinning liquid, extruding the spinning liquid out from a spinning nozzle in the temperature range of 5-35 DEG C, then curing the spinning liquid into silk in air directly, taking alcohol-water mixed solution as a finishing agent for post-processing, then taking the silk for drying, and finally obtaining the regenerated fibroin fiber. In the invention, the raw material source is wide, the cost of the raw material is low, and in the whole process, the defects that the traditional wet spinning solvent and the coagulating bath are strong in corrosion, and are toxic; in addition, compared with the other regenerated fibroin fiber dry spinning fiber, the condition of the spinning liquid is optimized, the PH regulation and other complex steps are omitted, and the use of a series of solvent is avoided. Therefore in the method, the cost is saved, and simultaneously the environment is protected. The regenerated fibroin fiber has the advantages of being non-toxic, harmless on human body and the like, is good in biocompatibility, suitable for biological and medical materials, and has good application prospect.

Description

technical field [0001] The invention belongs to the technical fields of textile fiber, material science and bionics, and relates to a preparation method of regenerated silk fibroin fiber, which is prepared by adding a high-concentration regenerated silk fibroin protein aqueous solution (50% to 60% by mass) with an appropriate amount of calcium ions. The spinning solution prepares the regenerated silk protein fiber through the spinning process of dry spinning, and uses the alcohol-water mixed solution as the treatment agent to obtain the high-performance regenerated silk fiber and its preparation method. Background technique [0002] Both spiders and silkworms can spin strong fibers with minimum energy and maximum efficiency under economical and environmentally friendly conditions, that is, using water as a solvent at normal temperature and pressure. At present, the research on the bionic spinning technology of spiders and silkworms is becoming one of the research hotspots in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F4/02D01F1/10D01F11/02D01D1/02D01D5/04
Inventor 邵惠丽金媛张耀鹏杭怡春胡学超
Owner DONGHUA UNIV
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