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Method for improving degradation property of silk threads, and modified degummed silk threads

A technology of silk cooked silk thread modification, applied in textiles and papermaking, catheters, yarns, etc., can solve the problems of unsatisfactory mechanical properties of materials, need to be improved, and limit the application range of silk fibroin materials

Active Publication Date: 2014-02-05
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of the material made by the above method are not ideal and need to be improved, which also limits the application range of silk fibroin material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Twisting 8-10 pieces of 20 / 22 silkworm raw silk to obtain silk thread, weighing 0.15kg of silk thread, putting it into 10L of sodium carbonate aqueous solution with a concentration of 0.25g / L, and treating it three times at 98°C-100°C. The water in the sodium carbonate aqueous solution used twice is tap water, and each treatment is 30 minutes, and the water in the sodium carbonate aqueous solution used for the third time is deionized water, and the treatment time is 45 minutes. Then the silk threads are fully rinsed with deionized water, loosened, and dried in an oven at 60° C. to complete the degumming process to obtain cooked silk threads.

[0036] 2. Put the cooked silk thread prepared in step 1 in the radiation-resistant metal aluminum pool, carry out vacuum treatment, discharge the air in the metal aluminum pool, and connect the silk cooked silk thread inside the sealed metal aluminum pool to γ-ray For irradiation treatment, the irradiation dose is 50kGy. After ...

Embodiment 2

[0040] 1. Twisting 8-10 pieces of 20 / 22 silkworm raw silk to obtain silk thread, weighing 0.15kg of silk thread, putting it into 10L of sodium carbonate aqueous solution with a concentration of 0.25g / L, and treating it three times at 98°C-100°C. The water in the sodium carbonate aqueous solution used twice is tap water, and each treatment is 30 minutes, and the water in the sodium carbonate aqueous solution used for the third time is deionized water, and the treatment time is 45 minutes. Then, the silk threads are fully rinsed with deionized water, loosened, and dried in an oven at 60°C to complete the degumming process to obtain cooked silk threads.

[0041] 2. Put the cooked silk thread prepared in step 1 in the radiation-resistant metal aluminum pool, carry out vacuum treatment, discharge the air in the metal aluminum pool, and connect the silk cooked silk thread inside the sealed metal aluminum pool to γ-ray For irradiation treatment, the irradiation dose is 100kGy. After ...

Embodiment 3

[0045] 1. Twisting 8-10 pieces of 20 / 22 silkworm raw silk to obtain silk thread, weighing 0.15kg of silk thread, putting it into 10L of sodium carbonate aqueous solution with a concentration of 0.25g / L, and treating it three times at 98°C-100°C. The water in the sodium carbonate aqueous solution used twice is tap water, and each treatment is 30 minutes, and the water in the sodium carbonate aqueous solution used for the third time is deionized water, and the treatment time is 45 minutes. Then, the silk threads are fully rinsed with deionized water, loosened, and dried in an oven at 60°C to complete the degumming process to obtain cooked silk threads.

[0046] 2. Put the cooked silk thread prepared in step 1 in the radiation-resistant metal aluminum pool, carry out vacuum treatment, discharge the air in the metal aluminum pool, and connect the silk cooked silk thread inside the sealed metal aluminum pool to γ-ray For irradiation treatment, the irradiation dose is 200kGy. After ...

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Abstract

The invention provides a processing method of degummed silk threads. The processing method comprises that degummed silk threads are radiated by gamma rays in the absence of oxygen, wherein an irradiation dose is in a range of 50 to 1000 kGy. The invention also provides modified degummed silk threads obtained by the above processing method. The modified degummed silk threads have a good mechanical property and a good degradation property, and are suitable as sutures, nerve conduits, artificial blood vessels or artificial bones.

Description

technical field [0001] The invention relates to the field of biological materials, in particular to a method for improving the degradation performance of silk threads and modified silk cooked silk threads. Background technique [0002] Bombyx mori silk fibroin fiber, also known as silk fiber, is a natural polymer. It is a natural animal protein with good mechanical properties synthesized and secreted by the silk gland of silkworm silkworm. It is usually obtained by degumming silkworm silk. Silk fiber is a protein composed of 20 kinds of amino acids that can be absorbed by organisms. In theory, silk fiber itself should be biocompatible, and the degradation products are non-toxic, have no side effects, can be absorbed by the body, and have excellent mechanical properties . Therefore, silk fibroin fibers are attracting more and more attention in the fields of medicine and materials, and are expected to be used as implant materials such as tissue regeneration scaffolds or filli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M10/00D06M11/76D02G3/02A61L17/10A61L27/22A61L29/04D06M101/10
Inventor 王建南
Owner SUZHOU UNIV