Graphene/silver nanowire-based cellulose/silk magnetic porous composite material

A technology of porous composite materials and silver nanowires, which is applied in the field of composite materials, can solve the problems of dispersion, affecting the performance of composite materials, and easy aggregation, etc., and achieve effective recycling, ensure uniform dispersion, and simple formation process.

Inactive Publication Date: 2018-01-19
赵兵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the π-π stacking effect of graphene itself is easy to aggregate, there are certain problems in its dispersion in solvents (Chemical Progress, 2016, 05:647-656), which will affect the subsequent preparation of composite materials and the final product. performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Prepare 1g / L dopamine Tris-HCl buffer solution, adjust the pH value to 8.5, soak the cotton in the above buffer solution for 24 hours at room temperature, bath ratio 1:50, and wash repeatedly with deionized water to obtain polydopamine-modified sex cotton. (2) Dissolve silk protein in deionized water to prepare a 1g / L aqueous solution. Slowly drop 1g / L ferric chloride aqueous solution into the silk protein aqueous solution at 50°C and stir evenly. The mass ratio of protein and ferric chloride is 1:1, and the calcium chloride solution that concentration is 1wt% is added dropwise with the speed of 30 drops / min, and the mass ratio of described calcium chloride and silk protein is 1:50, regulates After the pH value reaches 10, stir at a constant speed at 60°C for 1 hour, slowly add the polydopamine modified cotton in step 1, the mass ratio of the polydopamine modified cotton to silk protein is 1:1, and after ultrasonic mixing, pour into the mold Put it in liquid nitrog...

Embodiment 2

[0020] (1) Prepare 10 g / L dopamine Tris-HCl buffer solution, adjust the pH value to 8.5, soak the straw in the above buffer solution for 24 hours at room temperature, bath ratio 1:50, and wash repeatedly with deionized water to obtain polydopamine-modified Sexual straw. (2) Dissolve silk protein in deionized water to prepare a 10g / L aqueous solution, slowly drop 10g / L ferric sulfate aqueous solution into the silk protein aqueous solution at 70°C, and stir evenly, wherein the silk protein And the mass ratio of ferric sulfate is 5:1, and the calcium chloride solution that concentration is 2wt% is added dropwise with the speed of 30 drops / min, and the mass ratio of described calcium chloride and silk protein is 1:50, adjusts pH value After stirring at a constant speed at 11 and 60°C for 1 hour, slowly add the polydopamine-modified straw in step 1. The mass ratio of the polydopamine-modified straw to silk protein is 1:1. After ultrasonic mixing, pour it into a mold. Put it in liq...

Embodiment 3

[0022] (1) Prepare 50g / L dopamine Tris-HCl buffer solution, adjust the pH value to 8.5, soak flax in the above buffer solution at room temperature for 24 hours, bath ratio 1:50, and wash repeatedly with deionized water to obtain polydopamine-modified sexual linen. (2) Dissolve silk protein in deionized water to prepare a 50g / L aqueous solution. Slowly drop 50g / L ferric salt solution into the silk protein aqueous solution at 80°C and stir evenly. The mass ratio of silk protein to ferric salt is 10:1, and the calcium chloride solution with a concentration of 5wt% is added dropwise at a speed of 30 drops / min, and the mass ratio of calcium chloride to silk protein is 1:50 , adjust the pH value to 12, stir at a constant speed at 60°C for 1 hour, slowly add the polydopamine-modified flax in step 1, the mass ratio of the polydopamine-modified flax to silk protein is 1:1, and after ultrasonic mixing, pour Put it into the mold, put it in liquid nitrogen for 1min, take it out and put i...

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Abstract

The invention discloses a graphene / silver nanowire-based cellulose / silk magnetic porous composite material and a preparation method of same. The method includes the following step: supporting nano Fe3O4 particles on supporters being modified cellulose and silk protein, and performing crosslinking, liquid nitrogen treatment and freeze drying to form a cellulose / silk magnetic porous composite material; performing layer by layer self-assembly on the surface of the cellulose / silk magnetic porous composite material with silver nanowires and graphene oxide; reducing the graphene oxide to prepare thegraphene / silver nanowire-based cellulose / silk magnetic porous composite material. Structural stability and mechanical strength of the cellulose / silk porous material are guaranteed and dispersion uniformity of the graphene and silver nanowires in a cellulose / silk base body is ensured. The composite material has potential application value in the fields such as photoelectric materials, adsorption materials, medical materials, biomaterials, etc.

Description

technical field [0001] The invention relates to a cellulose / silk magnetic porous composite material based on graphene / silver nanowires, which belongs to the field of composite materials. Background technique [0002] For a long time, cellulose has been the main industrial raw material for textile and papermaking. It has been paid more and more attention by people because of its renewability, biodegradability and cost advantages. , Functional chemicals and additives have shown good development prospects. Due to the reduction of arable land and the depletion of fossil resources such as oil and natural gas, the production of synthetic fibers will be more and more restricted. As a green, environmentally friendly and renewable resource, cellulose has gained an unprecedented opportunity for development. [0003] Silk is known as the queen of fibres. It feels soft, thick, smooth, plump, and has a soft luster like pearls. It is widely used in the textile and clothing industries. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/00C08L1/02C08L79/04C08K3/22C08K7/06C08J9/28
Inventor 赵兵
Owner 赵兵
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