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A kind of micro polyacrylamide hydrogel based on graphene/cellulose base and preparation method thereof

A technology of cellulose hydrogel and polyacrylamide, which is applied in the field of textile materials, can solve the problems of low open circuit voltage and difficulty in meeting the needs of use, and meet the needs of use, good biocompatibility and mechanical flexibility, and a preparation method easy effect

Active Publication Date: 2021-02-09
SICHUAN JINGE KNITTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the above prior art that the mechanical and electrical properties of polyacrylamide hydrogel can be significantly improved by adding inorganic nanoparticles into polyacrylamide hydrogel, but the open circuit voltage that polyacrylamide hydrogel can withstand is still Low, it is difficult to meet the needs of all fields

Method used

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  • A kind of micro polyacrylamide hydrogel based on graphene/cellulose base and preparation method thereof

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Effect test

Embodiment 1

[0026] (1) According to the mass ratio of microcrystalline cellulose, graphene, N,N-methylene bisacrylamide and benzoyl peroxide is 10:1:7:1, the microcrystalline cellulose solution of 1.5wt% Add graphene, mix well, add crosslinking agent N,N-methylenebisacrylamide, mix well, add initiator benzoyl peroxide, stir at 500r / min at 80°C Polymerize for 24 hours to obtain graphene-coated cellulose hydrogel particles.

[0027] (2) According to acrylamide, graphene-coated cellulose hydrogel particles, N,N-methylenebisacrylamide, N,N,N',N'-tetramethylethylenediamine and ammonium persulfate The material ratio is 7:1:0.1:0.4:0.7, add graphene-coated cellulose hydrogel particles to the acrylamide solution, mix well, add the crosslinking agent N,N-methylenebisacrylamide Mix with the catalyst N,N,N',N'-tetramethylethylenediamine, add the initiator ammonium persulfate, and stir and polymerize at 30°C for 12 hours to obtain a graphene / cellulose / polyacrylamide composite Hydrogels.

[0028] (...

Embodiment 2

[0032] (1) According to the mass ratio of microcrystalline cellulose, graphene, N,N-methylenebisacrylamide and benzoyl peroxide is 10:2:8:1.5, the microcrystalline cellulose solution of 5.5wt% Add graphene, mix well, add crosslinking agent N,N-methylenebisacrylamide, mix well, add initiator benzoyl peroxide, stir at 800r / min at 90°C Polymerize for 30 hours to obtain graphene-coated cellulose hydrogel particles.

[0033] (2) According to acrylamide, graphene-coated cellulose hydrogel particles, N,N-methylenebisacrylamide, N,N,N',N'-tetramethylethylenediamine and ammonium persulfate The material ratio is 10:2:0.2:0.5:0.8, add graphene-coated cellulose hydrogel particles to the acrylamide solution, mix well, add the crosslinking agent N,N-methylenebisacrylamide Mix with the catalyst N,N,N',N'-tetramethylethylenediamine, add the initiator ammonium persulfate, and stir and polymerize at 40°C for 24 hours to obtain a graphene / cellulose / polyacrylamide composite Hydrogels.

[0034]...

Embodiment 3

[0038] (1) According to the mass ratio of microcrystalline cellulose, graphene, N,N-methylenebisacrylamide and benzoyl peroxide, it is 10:1.5:7.2:1.3, in the 3wt% microcrystalline cellulose solution Add graphene, mix well, add cross-linking agent N,N-methylenebisacrylamide, mix well, add initiator benzoyl peroxide, stir and polymerize at 85°C at a rate of 600r / min After 26 hours, graphene-coated cellulose hydrogel particles were obtained.

[0039] (2) According to acrylamide, graphene-coated cellulose hydrogel particles, N,N-methylenebisacrylamide, N,N,N',N'-tetramethylethylenediamine and ammonium persulfate The material ratio is 8:1.3:0.15:0.45:0.75, add graphene-coated cellulose hydrogel particles to the acrylamide solution, mix well, add the crosslinking agent N,N-methylenebisacrylamide After mixing with the catalyst N,N,N',N'-tetramethylethylenediamine, add the initiator ammonium persulfate, stir and polymerize at 35°C for 16 hours to obtain a graphene / cellulose / polyacryl...

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Abstract

The invention provides a graphene / cellulose-based miniature polyacrylamide hydrogel and a preparation method thereof. The preparation method is as follows: adding graphene and N,N-methylenebispropene into a microcrystalline cellulose solution in sequence Amide and benzoyl peroxide, stirred and polymerized at constant temperature to obtain graphene-coated cellulose hydrogel particles; add graphene-coated cellulose hydrogel particles to the acrylamide solution, and then add cross-linking agent and catalyst , after mixing evenly, add an initiator, and polymerize to obtain a graphene / cellulose / polyacrylamide composite hydrogel; the polyacrylamide composite hydrogel is respectively immersed in a solution of an electrolyte containing polyanions and polycations, and washed to obtain Polyanion-cation polyacrylamide composite hydrogel; finally, the polyanion / cation polyacrylamide composite hydrogel is repeatedly arranged in the form of water droplets to form a graphene / cellulose-based micro polyacrylamide hydrogel, which has good Biocompatibility, mechanical properties and electrical conductivity.

Description

technical field [0001] The invention belongs to the technical field of textile materials, and in particular relates to a graphene / cellulose-based micro polyacrylamide hydrogel and a preparation method thereof. Background technique [0002] Hydrogel is a soft material with a three-dimensional network structure formed by hydrophilic polymers through physical interaction or chemical bond cross-linking. Hydrogel can absorb a large amount of water and is insoluble in water. It has high elasticity and hydrophilicity. sex and biocompatibility, etc. Polyacrylamide hydrogel is prepared from acrylamide monomer through the action of crosslinking agent. It contains a large number of amide groups, which are easy to form hydrogen bonds and chemically modify. However, the traditional polyacrylamide has poor mechanical strength and is fragile. The elastic modulus and compressive strength are low, and the temperature resistance and environmental response are poor, which makes it difficult t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/075C08F220/56C08F222/38C08F2/44C08K9/10C08K3/04C08L1/04C08L33/26
CPCC08F2/44C08F220/56C08J3/075C08J2333/26C08J2401/04C08K9/10C08K3/042C08F222/385
Inventor 陈东进
Owner SICHUAN JINGE KNITTING CO LTD
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