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Preparation method and application of polystyrene sulfonic acid grafted graphene/polyaniline conductive composite hydrogel

A technology of polystyrene sulfonic acid and composite hydrogel, which is applied in the field of functional materials, can solve the problems of large difference in conductivity inside and outside the hydrogel, uneven distribution of conductive components, etc., and achieve improved solubility, good mechanical strength, Achieving a Controlled Release Effect

Inactive Publication Date: 2019-05-28
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of the existing conductive polymer hydrogel preparation process, such as uneven distribution of conductive components, large difference in conductivity between the inside and outside of the hydrogel, etc., to provide a polystyrene sulfonic acid with electrical stimulation response Preparation method and application of grafted graphene / polyaniline conductive composite hydrogel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Disperse 0.5g of graphene oxide, 25mL of 2-bromoisobutyryl bromide, and 10mL of triethylamine in 50mL of chloroform, place them in an ice-water bath for 24 hours, centrifuge, wash, and dry to obtain Graphene oxide containing initiating groups;

[0021] 2) Disperse 0.02 g of graphene oxide containing initiating groups in 4 mL of deionized water, add 3 mg of cuprous chloride, 0.5 mg of cupric chloride, 0.15 mmol of bipyridine, and 1.2 mmol of benzene under an argon atmosphere. Sodium ethylene sulfonate, reacted at 20°C for 6 hours, centrifuged, washed, and dried to obtain graphene oxide grafted with polystyrene sulfonic acid;

[0022] 3) Disperse 0.1 g of polystyrene sulfonic acid grafted graphene oxide in 30 mL of water, add 0.5 g of ascorbic acid, react at 90 ° C for 18 hours, centrifuge, wash and dry to obtain polystyrene sulfonic acid grafted graphite alkene;

[0023] 4) Disperse 0.05 g of polystyrene sulfonic acid grafted graphene in 10 mL of water, add 50 μL of...

Embodiment 2

[0025] 1) Disperse 0.6g of graphene oxide, 30mL of 2-bromoisobutyryl bromide, and 10mL of triethylamine in 60mL of N,N-dimethylformamide, place them in an ice-water bath for 30 hours, centrifuge, After washing and drying, graphene oxide containing initiator groups is obtained;

[0026] 2) Disperse 0.05 g of graphene oxide containing initiating groups in 6 mL of deionized water, add 4 mg of cuprous bromide, 0.6 mg of copper bromide, 0.2 mmol of bipyridyl, 1.5 mmol of benzene, respectively, under an argon atmosphere. Sodium ethylene sulfonate, reacted at 20°C for 8 hours, centrifuged, washed, and dried to obtain graphene oxide grafted with polystyrene sulfonic acid;

[0027] 3) Disperse 0.12 g of graphene oxide grafted with polystyrene sulfonic acid in 35 mL of water, add 0.6 g of tea polyphenols, react at 90 ° C for 20 hours, centrifuge, wash, and dry to obtain polystyrene sulfonic acid grafted dendritic graphene;

[0028] 4) Disperse 0.08 g of polystyrenesulfonic acid grafte...

Embodiment 3

[0030] 1) Disperse 0.8g of graphene oxide, 40mL of 2-bromoisobutyryl bromide, and 18mL of triethylamine in 70mL of N,N-dimethylformamide, place them in an ice-water bath for 24 hours, centrifuge, After washing and drying, graphene oxide containing initiator groups is obtained;

[0031] 2) Disperse 0.06 g of graphene oxide containing initiator groups in 8 mL of deionized water, add 5 mg of cuprous chloride, 1 mg of cupric chloride, 0.25 mmol of bipyridine, and 1.6 mmol of styrene under an argon atmosphere. Sodium sulfonate, reacted at 25°C for 6-12 hours, centrifuged, washed, and dried to obtain graphene oxide grafted with polystyrene sulfonic acid;

[0032] 3) Disperse 0.1 g of polystyrene sulfonic acid grafted graphene oxide in 35 mL of water, add 0.7 g of ascorbic acid, react at 90 ° C for 18-24 hours, centrifuge, wash and dry to obtain polystyrene sulfonic acid grafted dendritic graphene;

[0033] 4) Disperse 0.1 g of polystyrene sulfonic acid grafted graphene in 15 mL of...

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Abstract

The invention relates to a preparation method and application of a polystyrolsulfon acid-grafted graphene / polyaniline conductive composite hydrogel. The method comprises the steps of firstly grafting polystyrolsulfon acid on the surface of graphene oxide, and then reducing the graphene oxide; then combining static synthesis of an aniline monomer and recombination of polystyrolsulfon acid-grafted grapheme to obtain the target product polystyrolsulfon acid-grafted graphene / polyaniline conductive composite hydrogel. According to the preparation method and application of the polystyrolsulfon acid-grafted graphene / polyaniline conductive composite hydrogel provided by the invention, the polystyrolsulfon acid with a negative charge is grafted on the surface of graphene, so that not only are a dissolving property of the graphene and the distribution uniformity of the graphene and polyaniline in a composite hydrogel matrix improved, but also the effective recombination of the graphene and the polyaniline is promoted through multiple mutual effects between the polystyrolsulfon acid-grafted graphene and the polyaniline, the conductive composite hydrogel has favorable mechanical strength and electroresponsive, and has the ability of controlling molecule release under the electric stimulus.

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to a preparation method and application of polystyrene sulfonic acid grafted graphene / polyaniline conductive composite hydrogel with electrical stimulation response. Background technique [0002] Conductive polymer hydrogels not only have the water absorption and water retention properties of hydrogel materials, but also have the electrical properties of conductive materials, so they have good application prospects in the fields of artificial muscles, controlled release of electrical stimulation, electrochemical energy storage, and sensors. However, common conductive polymers can neither be dissolved in ordinary solvents nor can be melted due to thermal decomposition at high temperatures. Therefore, conductive polymer hydrogels with excellent water absorption and retention properties, mechanical properties and electrical properties still face huge challenges. challenge....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/075C08F292/00C08F212/14C08G73/02C08L51/10C08L79/02
CPCC08F292/00C08G73/0266C08J3/075C08J2351/10C08J2379/02C08J2451/10C08J2479/02C08L51/10C08L79/02C08F212/14
Inventor 李亮李阳喻湘华刘玉兰张桥
Owner WUHAN INSTITUTE OF TECHNOLOGY
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