Method for preparing silk protein composite cellulose fibers

A technology of composite cellulose and silk protein, applied in the direction of artificial filament made of viscose, can solve the problems of low silk yield, low utilization value, and high price, and achieve improved recycling value, fast dissolution speed, and degradation little effect

Active Publication Date: 2012-06-20
赛得利(盐城)纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high cost of silkworm rearing and the low silk yield, it is expensive and has great constraints in daily consumption.
However, waste silk and silk scraps are generally processed into silk quilts and other products. The price of silk quilts is much lower than that of silk fibers, and their utilization value is low.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] After cutting the waste silk, add 1.0wt% NaHCO 3 Dissolve and soak, heat to 80°C for 30 minutes, take it out and dry it. The dried silk was added to a 10mol / L LiBr solution and dissolved at 55°C for 5 hours to prepare a 13wt% silk protein solution. After cooling the prepared silk protein solution to normal temperature, use a filter screen with a pore size of 20um to remove impurities therein, and dialyze the filtered silk protein solution with a polyethylene glycol solution with a molecular weight of 8000 and a concentration of 15wt%. , the molecular weight cut-off of the dialysis membrane is 3000, the number of dialysis is 3, and the total dialysis is 20 hours.

[0028] The dialyzed silk protein solution is mixed with the cellulose fiber solution, and the blended solution of silk protein and cellulose is obtained through thorough mixing, dissolution, filtration, and defoaming, and the amount of silk protein added is calculated as silk protein , which is 8wt% of cellu...

Embodiment 2

[0030] After cutting the waste silk, add 0.5wt% Na 2 CO 3 Dissolve and soak, heat to 90°C for 40 minutes, take it out and dry it. The dried silk was added to 9mol / L LiBr solution, and dissolved at 60°C for 4 hours to prepare a 7wt% silk protein solution. After cooling the prepared silk protein solution to normal temperature, filter it with a filter screen with a pore size of 15um to remove impurities therein.

[0031] Mix the filtered fibroin solution with the cellulose fiber solution, and through thorough mixing, dissolution, filtration, and defoaming, a blended solution of fibroin and cellulose is obtained, and the amount of the fibroin added is calculated as silk protein , which is 25wt% of cellulose, the blended solution is spun in a coagulation bath containing 135g / L of sulfuric acid, 10g / L of zinc sulfate, and 335g / L of sodium sulfate at a temperature of 53°C, and then washed with water, desulfurized, and oiled and drying to obtain silk protein composite cellulose fib...

Embodiment 3

[0033] After cutting the waste silk, add 2.5wt% NaHCO 3 Dissolve and soak, heat to 75°C for 50 minutes, take it out and dry it. Add the dried silk into 7mol / L LiBr solution, and dissolve it at 70°C for 3 hours to prepare a 10wt% silk protein solution. After cooling the prepared silk protein solution to normal temperature, filter it with a filter screen with a pore size of 25um to remove impurities therein, and dialyze the filtered silk protein solution with a polyethylene glycol solution with a molecular weight of 9000 and a concentration of 13wt%. , the molecular weight cut-off of the dialysis membrane is 4000, the number of dialysis is 2, and the total dialysis is 32 hours.

[0034] The dialyzed silk protein solution is mixed with the cellulose fiber solution, and the blended solution of silk protein and cellulose is obtained through thorough mixing, dissolution, filtration, and defoaming, and the amount of silk protein added is calculated as silk protein , which is 35wt% of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

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Abstract

The invention discloses a method for preparing silk protein composite cellulose fibers, which includes steps: firstly, adding degummed waste silk into LiBr solution, dissolving the waste silk to prepare silk protein solution in which silk protein accounts for 3-15%, by weight; secondly, adding the silk protein solution into sodium hydroxide solution with cellulose sulfonate to obtain blended solution of silk protein and cellulose, wherein blended silk protein solution accounts for 5-50% of that of the sodium hydroxide with cellulose sulfonate by weight; and thirdly, spinning the blended solution by coagulating bath and obtaining the silk protein composite cellulose fibers by post-processing. By the method, recovery value of the waste silk is improved greatly, special effects of whitening and skin caring of the silk protein composite cellulose fibers can be realized, and the fibers are smooth and soft to touch as silk, and have the skin caring and whitening effects that the effects of protein powder fibers or blended fibers of protein powder and cellulose solution cannot match.

Description

technical field [0001] The invention relates to the technical field of cellulose fiber preparation, in particular to the preparation of silk protein composite cellulose fiber. Background technique [0002] Silk is a continuous long fiber coagulated by the silk liquid secreted by cooked silkworms when they cocoon. It is a protein fiber and is a porous substance. The fabric made of it has good air permeability, excellent hygroscopicity, and is comfortable and high-end to wear. For the "fiber queen". Silk is generally used to weave various silks and satins, knitted fabrics, industrial, national defense and medical supplies, and is one of the important textile raw materials. However, due to the high cost of sericulture and the low silk yield, it is expensive and has a large restriction in daily consumption. However, waste silk and silk scraps are generally processed into silk quilts and other supplies. The price of silk quilts is much lower than that of silk fibers, and their ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/08
Inventor 迟健叶荣明赵望春刘海洋王可龚玮超
Owner 赛得利(盐城)纤维有限公司
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