Preparation method of regenerative silk protein fiber with skin-core structure

A technology of regenerated silk and skin-core structure is applied in the field of preparation of regenerated silk protein fibers, which can solve the problems such as the regenerated silk protein fibers that have not been seen, and achieve the effects of simple preparation method, extended application scope and convenient operation.

Active Publication Date: 2010-06-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, no regenerated silk protein fibers have been seen that imitate silk fibroin and sericin composition and skin-core structure.

Method used

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  • Preparation method of regenerative silk protein fiber with skin-core structure
  • Preparation method of regenerative silk protein fiber with skin-core structure
  • Preparation method of regenerative silk protein fiber with skin-core structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) the silkworm cocoon is used the Na of mass volume ratio 0.5% 2 CO 3 After the solution is degummed, it is dissolved in a 9.0mol / L LiBr solution, and then centrifugal dialysis is concentrated to a solution with a mass percentage of 20%;

[0023] (2) Sericin powder is dissolved in aqueous solution and is made into the solution that mass percent is 50%;

[0024] (3) The solution obtained in the above step (1) is used as the inner tube spinning solution, and the solution obtained in the step (2) is used as the outer tube spinning solution, which is respectively injected into the inner and outer tubes of the coaxial spinneret, and heated at room temperature. Coaxial electrospinning was carried out under the following parameters: the flow rate of the outer tube solution was 1 μL / min, the flow rate of the inner tube solution was 1 μL / min, the voltage was 30 kV, and the receiving distance was 6 cm.

[0025] The obtained regenerated silk fibroin fiber having a skin-core st...

Embodiment 2

[0028] (1) the silkworm cocoon is used the Na of mass volume ratio 0.5% 2 CO 3 After the solution is degummed, it is dissolved in a 9.0mol / L LiBr solution, and then centrifugal dialysis is concentrated to a solution with a mass percentage of 20%;

[0029] (2) Sericin powder is dissolved in aqueous solution and is made into the solution that mass percent is 70%;

[0030] (3) The solution obtained in the above step (1) is used as the inner tube spinning solution, and the solution obtained in the step (2) is used as the outer tube spinning solution, which is respectively injected into the inner and outer tubes of the coaxial spinneret, and heated at room temperature. Coaxial electrospinning was carried out under the following spinning parameters: the flow rate of the outer tube solution was 4 μL / min, the flow rate of the inner tube solution was 4 μL / min, the voltage was 30 kV, and the receiving distance was 6 cm.

[0031] The obtained regenerated silk fibroin fiber having a ski...

Embodiment 3

[0034] (1) the silkworm cocoon is used the Na of mass volume ratio 0.5% 2 CO 3 After the solution is degummed, it is dissolved in a 9.0mol / L LiBr solution, and then concentrated to a solution with a mass percentage of 35% by centrifugal dialysis;

[0035] (2) Sericin powder is dissolved in aqueous solution and is made into the solution that mass percent is 70%;

[0036] (3) The solution obtained in the above step (1) is used as the inner tube spinning solution, and the solution obtained in the step (2) is used as the outer tube spinning solution, which is respectively injected into the inner and outer tubes of the coaxial spinneret, and heated at room temperature. The coaxial electrospinning was carried out under the following spinning parameters: the flow rate of the outer tube solution was 10 μL / min, the flow rate of the inner tube solution was 20 μL / min, the voltage was 50 kV, and the receiving distance was 10 cm.

[0037] The obtained regenerated silk fibroin fiber havin...

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Abstract

The invention relates to a preparation method of regenerative silk protein fiber with skin-core structure, comprising the following steps: (1) silkworm cocoon is degummed and is dissolved in LiBr solution, a multi-wall carbon nano tube, a single-wall carbon nano tube or carbon black is added to obtain the solution with 20-35 percent of concentration; (2) sericin powder is prepared into the solution with 50-70 percent of concentration; (3) the solution is respectively poured into an inner pipe and an outer pipe of a coaxial spinning nozzle to carry out coaxial electrostatic spinning. The preparation method is simple, the operation is convenient, the cost is low, the method has no pollution to environment, and the obtained regenerative silk protein fiber has similar composition and skin-core structure with the natural silk.

Description

technical field [0001] The invention belongs to the field of preparation of regenerated silk protein fibers, in particular to a method for preparing regenerated silk protein fibers with a skin-core structure. Background technique [0002] Silk is solidified by the silk liquid secreted by silk glands in silkworms, and its main components are silk fibroin (SF for short) and silk sericin (SS for short). Among them, silk fibroin accounts for about 70-80% of the total weight of silk, and plays a major role in the mechanical properties of silk. Sericin accounts for about 25% of the total weight of silk, and it is used as a protective agent and adhesive to wrap around the silk fibroin. When the silkworm spins silk, two very fine silk fibroin are glued together to form a core layer, and the outside is wrapped with sericin, and then spit out from the silk spinning port to form a high-performance composite silk with a skin-core structure. [0003] The silk spinning process of silkwo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/34D01D1/02D01F4/02
Inventor 张耀鹏杭怡春邵惠丽胡学超
Owner DONGHUA UNIV
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