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Degumming method of silk

A degumming method and silk technology, applied in the field of silk processing, can solve the problems of unsatisfactory results, affecting the application of silk, and high cost.

Active Publication Date: 2015-05-06
WUXI CANMEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, these methods generally have the problem of low degumming efficiency, and cannot degumming well, which greatly affects the application of silk. At the same time, in order to pursue higher degumming efficiency, different degumming methods are often used. It can improve the degumming rate to a certain extent, but the result is often unsatisfactory, and it also causes the problem of high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for degumming silk, comprising the following steps:

[0021] Step 1, immerse the silk to be treated in 10% ammonia solution, heat to 30°C under airtight conditions, stir for 120 minutes at a stirring speed of 60 rpm, and filter to obtain silk;

[0022] Step 2, add the silk obtained by filtering in Step 1 into 30% ethanol aqueous solution, heat to boiling, keep for 10 minutes, and drop to room temperature, wherein the cooling rate is 20°C / min;

[0023] Step 3: Add the silk processed in Step 2 into the sodium bicarbonate solution, heat to 70°C, and keep it under stirring for 60 minutes, wherein the stirring speed is 80 rpm, and drop to room temperature with a cooling rate of 20°C / min. minute;

[0024] Step 4, washing the silk treated in Step 3 with deionized water to remove gelatin;

[0025] Step five, drying the silk obtained in step four, wherein the drying temperature is 80° C., and the drying time is 150 minutes, to obtain degummed silk.

[0026] The d...

Embodiment 2

[0028] A method for degumming silk, comprising the following steps:

[0029] Step 1, immerse the silk to be treated in 10% ammonia solution, heat to 32°C under airtight conditions, stir for 125 minutes at a stirring speed of 63 rpm, and filter to obtain silk;

[0030] Step 2: Add the silk obtained by filtering in Step 1 into 30% ethanol aqueous solution, heat to boiling, keep for 13 minutes, and drop to room temperature, wherein the cooling rate is 25°C / min;

[0031] Step 3: Add the silk processed in Step 2 into the sodium bicarbonate solution, heat to 72°C, and keep it under stirring for 70 minutes, wherein the stirring speed is 85 revolutions per minute, and drop to room temperature with a cooling rate of 22°C / min. minute;

[0032] Step 4, washing the silk treated in Step 3 with deionized water to remove gelatin;

[0033] Step five, drying the silk obtained in step four, wherein the drying temperature is 80° C., and the drying time is 160 minutes, to obtain degummed silk. ...

Embodiment 3

[0036] A method for degumming silk, comprising the following steps:

[0037] Step 1, immerse the silk to be treated in 10% ammonia solution, heat to 36°C under airtight conditions, stir for 135 minutes at a stirring speed of 65 rpm, and filter to obtain silk;

[0038] Step 2, add the silk obtained by filtering in Step 1 into 30% ethanol aqueous solution, heat to boiling, keep for 17 minutes, and drop to room temperature, wherein the cooling rate is 28°C / min;

[0039] Step 3, add the silk processed in step 2 into the sodium bicarbonate solution, heat to 75°C, keep it under stirring for 80 minutes, wherein the stirring speed is 86 rpm, drop to room temperature, and the cooling rate is 26°C / min. minute;

[0040] Step 4, washing the silk treated in Step 3 with deionized water to remove gelatin;

[0041] Step 5, drying the silk obtained in Step 4, wherein the drying temperature is 80° C., and the drying time is 180 minutes, to obtain degummed silk.

[0042] The degumming rat...

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PUM

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Abstract

The invention discloses a degumming method of silk. The method comprises the steps of firstly soaking the to-be-processed silk in an ammonia solution, heating, stirring, and filtering the solution to obtain silk, then arranging the silk into a 30% ethanol solution, heating the solution until the solution is boiled, maintaining the temperature for a given time, arranging the processed silk into a sodium bicarbonate solution, heating the solution to 70 to 80 DEG C, maintaining the temperature for 60 to 100 minutes in a stirring state, and cooling the solution to the room temperature; washing the processed silk by utilizing deionized water, and removing the glue proteins; finally drying the silk to obtain the degummed silk. By adopting the gumming method of the silk, the silk can be well degummed, and the degumming rate can reach more than 67.4 percent and can reach up to 80.5 percent.

Description

technical field [0001] The invention belongs to the technical field of silk processing, in particular to a silk degumming method. Background technique [0002] Silk is the fiber that solidifies after the silk liquid in the silkworm body is spouted out, and is called cocoon silk. It is composed of two silk proteins (also known as silk fibroin) with a nearly triangular or semi-elliptical cross-section enclosing sericin, as well as pigments, oil waxes and inorganic substances, which exist in sericin. Among them, sericin has a certain protective effect on silk fibroin, but if the content is too much, it will affect the luster and feel of silk fibroin and the process of silk fiber processing, while impurities such as oil and wax will bring certain difficulties to post-processing. . Therefore, before dyeing and finishing, most of the sericin, grease, wax and other sundries must be removed to make the silk fiber soft, loose and clean. [0003] Both silk fibroin and sericin...

Claims

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Application Information

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IPC IPC(8): D01C3/02
CPCD01C3/02
Inventor 汪屹
Owner WUXI CANMEI TECH
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