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Synthetic fibre containing animal protein and its preparing method

A technology of synthetic fiber and protein, which is applied in the field of synthetic fiber containing animal protein and its preparation, and can solve the problems of poor uniformity of natural protein fiber, etc.

Inactive Publication Date: 2003-06-25
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] One of the objectives of the present invention is to provide a synthetic fiber containing animal protein (keratin) with high protein content, mostly fibrous protein, good filament formation, lower cost, hygroscopicity, and good air permeability. , to overcome the shortcomings of natural protein fibers such as poor uniformity

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

[0033] Select wool as raw material, first clean and pretreat the wool and add it to a mixed solution containing 1wt% sodium dodecylsulfate, 3wt% sodium bisulfite and 13wt% urea for dissolution; the dissolution temperature is 80°C, The dissolution time was 5 hours; the resulting solution was filtered to remove insoluble matter.

[0034] The keratin is separated and purified by salting-out method. Calcium chloride salt is added to the solution and stirred while adding until the keratin precipitates, then filtered and washed several times with water. Dissolve the separated and purified keratin with a sodium hydroxide alkaline solution under heating conditions. The initial pH value of the alkaline solution is 9.5, the initial heating temperature is 75°C, the temperature rises by 5°C per hour, and the pH value rises by 0.5 per hour . Dissolving time is 3-4 hours. The dissolved solution should be concentrated to 13-20 wt%, that is, a concentrated wool keratin solution can be obtai...

Embodiment 2

[0038] When producing keratin, pig hair is selected as raw material, and the pig hair is cleaned and pretreated before being added to a mixture containing 0.5wt% sodium octadecylsulfonate, 2.5wt% mercaptopropanol and 11wt% calcium chloride. Dissolving in the solution; the dissolving temperature is 40° C., and the dissolving time is 8 hours; the obtained solution is filtered to remove insoluble matter.

[0039] Keratin is separated and purified by dialysis. Put the filtered solution into a semi-permeable membrane, immerse it in distilled water, change the water several times in the middle, and the dialysis time is about 30 hours.

[0040] Concentrate the dialyzed solution to 13-15wt% to obtain concentrated porcine hair keratin solution.

[0041] The polyvinyl alcohol polymer (PVA) is dissolved in water, and the operating conditions are the same as in Example 1.

[0042] Mix the concentrated pig hair keratin solution and PVA solution in proportion, the addition ratio is: 40 part...

Embodiment 3

[0044] Rabbit hair is selected as raw material, the rabbit hair is cleaned and pretreated, and then added to a mixed solution containing 1.5wt% sodium dodecylsulfonate, 5.5wt% ammonium thioglycolate and 12wt% urea for dissolution; The temperature was 50°C, and the dissolution time was 7 hours; the resulting solution was filtered to remove insoluble matter.

[0045] Keratin is separated and purified by isoelectric point method. Adjust the isoelectric point of keratin protein to separate it from the solution, filter and wash it with sodium hydroxide alkaline solution with a pH value of 9-10, the dissolution time is 5 hours, and the dissolution temperature is 75°C-95°C , the solution after dissolving should be concentrated to 13-15 wt%, to obtain concentrated rabbit hair keratin solution.

[0046] The polyvinyl alcohol polymer (PVA) is dissolved in water, and the operating conditions are the same as in Example 1.

[0047] Mix the concentrated rabbit hair keratin solution and PV...

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 present invention relates to textile technology and especially synthetic fiber containing animal protein and its preparation process. The preparation process includes separating and purifying keratin from natural animal material, dissolving keratin in water, regulating pH value of the solution with alkali solution to 8.5-12, concentrating to concentration of 13-20 wt%; dissolving PVA in water toform water solution of 13-20 wt% concentration; mixing the keratin solution and the PVA solution to form spinning solution; defoaming the spinning solution and wet spinning; wet bath drawing, stoving, drying and hot drawing; and hot setting.

Description

technical field [0001] The invention belongs to the field of textiles, in particular to a synthetic fiber containing animal protein and a preparation method thereof. Background technique [0002] Existing animal protein fibers include natural protein fibers such as wool, cow hair, and rabbit hair, but these natural protein fibers themselves have insurmountable defects, such as easy shrinkage of wool fibers; poor strength of rabbit hair, easy pilling, etc.; "Journal of Fiber Chemistry" discloses a milk protein synthetic fiber made from protein separated from milk and blended with acrylonitrile, and Japan's Toyobo Co., Ltd. has realized industrial production of it, which has shortened the time for silk formation and increased product output. But because 100kg of milk can only extract 2kg of protein, the manufacturing cost is too high, and the fiber heat resistance is poor, it is easy to turn yellow when dry heat is above 120 ℃, and the strength drops, s...

Claims

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Application Information

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IPC IPC(8): D01F8/02D01F8/10
Inventor 刘必前高曙光冀旭金小铃李兰
Owner INST OF CHEM CHINESE ACAD OF SCI
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