Preparation method and application of nano-particle functionalized artificial spider silk

A nanoparticle and spider silk technology, applied in textiles and papermaking, fiber treatment, light-resistant fibers, etc., can solve the problems that the toughness cannot meet the industrial needs, the fiber has a single function, and does not have light-to-heat conversion, etc., and the functional method is simple The effect of high efficiency, uniform particle size, and strong durability

Pending Publication Date: 2021-11-30
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the disadvantages that the fiber obtained by the prior art has single function, does not have various functional properties such as photothermal conversion, fluorescence, antibacterial and / or anti-ultraviolet, and the toughness cannot meet the needs of the industry, and proposes a nanoparticle functionalized artificial spider silk The preparation method and application of the method are simple and convenient, and the produced composite fiber contains nanoparticles with small particle size and uniform dispersion, and the mechanical properties of the fiber can be further improved through nano-functionalization, making its toughness surpass that of natural spider drag silk; at the same time, After repeated washing and drying, the functional properties of the composite fiber are hardly affected

Method used

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  • Preparation method and application of nano-particle functionalized artificial spider silk
  • Preparation method and application of nano-particle functionalized artificial spider silk
  • Preparation method and application of nano-particle functionalized artificial spider silk

Examples

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Effect test

Embodiment 1

[0037] This example relates to a method for preparing artificial spider silk functionalized with copper sulfide nanoparticles, and the specific steps include:

[0038] 1) The primary fiber of the recombinant spider silk protein is soaked in water for 2 minutes and begins to elongate and become soft, the degree of freedom of the molecular chain increases, and it is stretched to 6 times its original length in water.

[0039] The primary fiber of recombinant spider silk protein is obtained by wet spinning of high-concentration spinning solution of recombinant spider silk protein, specifically: sucking high-concentration spinning solution of recombinant spider silk protein into a syringe, and using a syringe pump to pass it through The microfluidic chip was extruded into a 90% ethanol (pH5.0) coagulation bath to dehydrate and solidify the recombinant spider silk protein into nascent fibers.

[0040] The high-concentration spinning solution of recombinant spider silk protein, that ...

Embodiment 2

[0050] This example relates to a method for preparing artificial spider silk functionalized with cadmium sulfide quantum dots. The specific steps include:

[0051] 1) The primary fiber of the recombinant spider silk protein is soaked in water for 2 minutes and begins to elongate and become soft, the degree of freedom of the molecular chain increases, and it is stretched to 6 times its original length in water.

[0052] 2) The fiber stretched in water was placed in 1 mM cadmium chloride solution, and soaked at room temperature for 12 hours.

[0053] 3) Put the treated fiber in 3mM sodium sulfide solution and treat it at room temperature for 6h. After the treatment, the fiber was taken out and dried overnight at room temperature to obtain artificial spider silk functionalized with cadmium sulfide quantum dots.

[0054] Compared with the existing method of functionalizing spider silk by directly soaking the quantum dot dispersion solution, the strength of the cadmium sulfide qua...

Embodiment 3

[0056] This embodiment relates to a preparation method of gold nanoparticle functionalized artificial spider silk, and the specific steps include:

[0057] 1) The primary fiber of the recombinant spider silk protein is soaked in water for 2 minutes and begins to elongate and become soft, the degree of freedom of the molecular chain increases, and it is stretched to 6 times its original length in water.

[0058] 2) The fibers stretched in water were placed in 0.8 mM chloroauric acid solution, and soaked at room temperature for 12 hours.

[0059] 3) Put the treated fiber in 8mM sodium citrate solution and treat at 75°C for 6h. After the treatment, the fibers were taken out and dried overnight at room temperature to obtain artificial spider silk functionalized with gold nanoparticles.

[0060] Compared with the existing method of synthesizing nanoparticles in situ on regenerated fibers by redox reaction, the gold nanoparticles synthesized in this example have a uniform particle ...

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Abstract

The invention relates to a preparation method and application of nano-particle functionalized artificial spider silk. The preparation method comprises the steps that nascent artificial spider silk is taken as a template, nano-particles are prepared in situ through chemical reaction, and nano-functionalization of spider silk is realized; specifically, recombined spider silk protein nascent fibers are soaked in an ion solution, and nucleation sites of the nano-particles are formed through ions in combination with protein molecular chains in the nascent fibers in advance; and the artificial spider silk is soaked by adopting a composite ion solution, and in-situ synthesis is carried out on the nano-particles which are uniformly dispersed and uniform in particle size in the artificial spider silk. The preparation method is simple and convenient, the produced composite fiber contains nano-particles which are small in particle size and uniformly dispersed, the mechanical property of the fiber can be further improved through nano functionalization, and the toughness of the fiber exceeds that of natural spider traction fibers; and meanwhile, after multiple times of water washing and drying, the functional properties of the composite fiber are almost not affected, and different kinds of nano-particles can be prepared in the fiber, so that the requirements of people on fiber materials in different scenes are met.

Description

technical field [0001] The invention relates to a technology in the field of polymer biomaterials, in particular to a preparation method and application of nanoparticle-functionalized artificial spider silk. Background technique [0002] Spider silk has the characteristics of high strength and good toughness, so it has attracted great attention from researchers. However, the functions of artificial spider silk obtained so far are relatively single, so functionalizing it is an important means to expand its application. Nanoparticles have unique functional properties due to their small particle size. Therefore, it is widely used in the preparation of functionalized materials. There are two main methods for the nano-functionalization of spider silk. One is to add functionalized nanoparticles to the spider silk protein solution and then spin the silk; the other is to directly coat the surface of the spun fiber for functionalization. However, these two methods all have their ow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/51D06M11/83
CPCD06M11/51D06M11/83D06M2200/25
Inventor 钱志刚程俊燕夏小霞胡春飞
Owner SHANGHAI JIAO TONG UNIV
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