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Graphene/silk/salix psammophila nano-compound material and preparation method of same

A composite material and graphene technology, which is applied in fiber raw material processing, textiles and papermaking, etc., can solve problems affecting the performance of composite materials, easy aggregation, and dispersion problems, and achieve high strength, large specific surface area, and low density. Effect

Inactive Publication Date: 2018-01-19
钱景
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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

[0020](1) Immerse salix cellulose in 15% NaOH solution at room temperature for 60 minutes, bath ratio 1:50, wash with deionized water until neutral, and dry; redisperse salix cellulose after NaOH treatment in In water, the bath ratio is 1:50, add glutaraldehyde, wherein the volume ratio of glutaraldehyde and Salix salix aqueous solution is 1:10, react for 1 hour, slowly add 10g / L polyamide-amine PAMAM aqueous solution, wherein PAMAM aqueous solution and sand willow The volume ratio of willow cellulose aqueous solution is 1:5. After reacting for 24 hours, wash repeatedly with distilled water and ethanol, and dry to obtain PAMAM modified salix cellulose; (2) Dissolve silk protein in deionized water to prepare 10g / L aqueous solution, under the condition of 50 ℃, slowly drop 10g / L ferric chloride aqueous solution into the silk protein aqueous solution, stir evenly, wherein the mass ratio of the silk protein and ferric chloride is 5:1, with 30 drops Add calcium chloride solution w...

Embodiment 2

[0022] (1) Immerse salix cellulose in 15% NaOH solution at room temperature for 60 minutes, bath ratio 1:50, wash with deionized water until neutral, and dry; redisperse salix cellulose after NaOH treatment in In water, the bath ratio is 1:50, add glutaraldehyde, wherein the volume ratio of glutaraldehyde and Salix salix aqueous solution is 1:15, react for 1 hour, slowly add 50g / L polyamide-amine PAMAM aqueous solution, wherein PAMAM aqueous solution and sand willow The volume ratio of willow cellulose aqueous solution is 1:8. After reacting for 24 hours, wash repeatedly with distilled water and ethanol, and dry to obtain PAMAM modified salix cellulose; (2) Dissolve silk protein in deionized water to prepare 50g / L aqueous solution, under the condition of 80 ℃, slowly drop 50g / L ferric sulfate aqueous solution into the silk protein aqueous solution, stir evenly, wherein the mass ratio of silk protein and ferric sulfate is 1:1, at 30 drops / min Add calcium chloride solution with...

Embodiment 3

[0024] (1) Immerse salix cellulose in 15% NaOH solution at room temperature for 60 minutes, bath ratio 1:50, wash with deionized water until neutral, and dry; redisperse salix cellulose after NaOH treatment in In water, the bath ratio is 1:50, add glutaraldehyde, wherein the volume ratio of glutaraldehyde and Salix salix aqueous solution is 1:20, react for 1 hour, slowly add 80g / L polyamide-amine PAMAM aqueous solution, wherein PAMAM aqueous solution and sand willow The volume ratio of willow cellulose aqueous solution is 1:10. After reacting for 24 hours, wash repeatedly with distilled water and ethanol, and dry to obtain PAMAM modified salix cellulose; (2) Dissolve silk protein in deionized water to prepare 80g / L aqueous solution, under the condition of 60°C, slowly drop 80g / L ferric nitrate aqueous solution into the silk protein aqueous solution, and stir evenly, wherein the mass ratio of silk protein and ferric nitrate is 10:1, at 30 drops / min Add calcium chloride solutio...

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Abstract

The invention discloses a graphene / silk / salix psammophila nano-compound material and a preparation method of same. The preparation method includes the steps of: 1) modifying salix psammophila cellulose with PAMAM; 2) performing freeze drying with liquid nitrogen to obtain a salix psammophila / silk magnetic porous composite material; 3) impregnating the salix psammophila / silk magnetic porous composite material in a graphene oxide water solution and reducing the graphene oxide with a reducing agent to prepare the graphene / silk / salix psammophila nano-compound material. In the invention, with the salix psammophila and silk as base materials, the nano-compound material has sufficient raw material source and low cost; then the magnetic nano-Fe3O4 and graphene are subjected to synergistic self-assembly effectively to produce the graphene / silk / salix psammophila nano-compound material. The material has great application prospect in the fields of adsorption materials, photocatalysis, biomaterials, etc.

Description

technical field [0001] The invention relates to a graphene-silk-salix nanocomposite material, which belongs to the field of composite materials. Background technique [0002] 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. Silk is composed of sericin and silk fibroin, wherein sericin is located in the outer layer of silk with a content of 20%-30%, and silk fibroin is located in the inner layer of silk with a content of 70%-80%. Silk fibroin located in the inner layer of silk is a natural polymer material composed of 18 kinds of amino acids such as serine, glycine and alanine, with a molecular weight of about 2300kDa. It consists of heavy chain, light chain and P25, wherein the molecular weight of the heavy chain H chain is 350kDa, the molecular weight of the light chain L chain is 26kDa, and the molecular weight of P25 is 30kDa, and the ratio of the three ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/00C08L1/02C08L79/02C08K3/04C08K3/22C08J9/28C08B15/02D21C5/00
Inventor 钱景赵兵
Owner 钱景
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