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Preparation method of biocompatible photo-thermal response self-healing conductive hydrogel

A conductive hydrogel, photothermal response technology, applied in the field of conductive hydrogel preparation, can solve problems such as the preparation of graphene-polymer self-healing hydrogels, and achieve good self-healing performance, reaction Mild conditions, high conductivity effect

Inactive Publication Date: 2012-08-22
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] There is no report on the preparation of biocompatible graphene-polymer self-healing hydrogels

Method used

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  • Preparation method of biocompatible photo-thermal response self-healing conductive hydrogel
  • Preparation method of biocompatible photo-thermal response self-healing conductive hydrogel
  • Preparation method of biocompatible photo-thermal response self-healing conductive hydrogel

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Dissolve 3.2g of N,N-dimethylacrylamide monomer, 0.032g of initiator potassium persulfate and 0.08g of accelerator N,N,N',N'-tetramethylethylenediamine into 30g of water to prepare a single body solution; 1mg / ml graphite oxide aqueous solution was hydrothermally reacted at 200°C for 8-12h to prepare graphene hydrogel; 3.6g graphene hydrogel prepared by hydrothermal method was soaked in monomer solution at 2°C The solution was replaced in 24 hours; the graphene hydrogel containing the monomer solution was left to stand, and the graphene-polydimethylacrylamide hydrogel was obtained after the polymerization reaction was initiated at room temperature for 48 hours.

[0024] figure 1 It is the Fourier transform infrared spectrum of the product, and the spectrum shows that the N,N-dimethylacrylamide monomer in the graphene hydrogel is successfully polymerized to form polydimethylacrylamide.

[0025] figure 2 It is a scanning electron microscope photo of the product, and it ...

Embodiment 2

[0029] Dissolve 5g of N,N-dimethylacrylamide monomer, 0.05g of initiator potassium persulfate and 0.125g of accelerator N,N,N',N'-tetramethylethylenediamine into 50g of water to prepare a monomer solution; 2mg / ml graphite oxide aqueous solution was hydrothermally reacted at 100°C for 8h to prepare graphene hydrogel; 4g of graphene hydrogel prepared by hydrothermal method was soaked in monomer solution for 18h at 4°C for solution Replacement: the graphene hydrogel containing the monomer solution was left to stand, and the graphene-polydimethylacrylamide hydrogel was obtained after initiating a polymerization reaction at room temperature for 60 hours.

[0030] N,N-dimethylacrylamide monomers in graphene hydrogels were successfully polymerized to form polydimethylacrylamide. The graphene-polydimethylacrylamide hydrogel uses a three-dimensional graphene network as a skeleton structure, and polymers are filled in the three-dimensional graphene network. The product has high electri...

Embodiment 3

[0032] Dissolve 7.2g of N,N-dimethylacrylamide monomer, 0.072g of initiator potassium persulfate and 0.18g of accelerator N,N,N',N'-tetramethylethylenediamine into 90g of water to prepare a single body solution; 1.5mg / ml graphite oxide aqueous solution was hydrothermally reacted at 150°C for 10h to prepare graphene hydrogel; 3.6g graphene hydrogel prepared by hydrothermal method was soaked in monomer solution at 5°C The solution was replaced for 12 hours; the graphene hydrogel containing the monomer solution was left to stand, and the polymerization reaction was initiated at room temperature for 72 hours to obtain a graphene-polydimethylacrylamide hydrogel.

[0033] N,N-dimethylacrylamide monomers in graphene hydrogels were successfully polymerized to form polydimethylacrylamide. The graphene-polydimethylacrylamide hydrogel uses a three-dimensional graphene network as a skeleton structure, and polymers are filled in the three-dimensional graphene network. The product has high...

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Abstract

The invention relates to a preparation method of biocompatible photo-thermal response self-healing conductive hydrogel, which includes: preparing solution from N,N-dimethyl acrylamide monomer, potassium persulfate serving as initiator and N,N,N',N'-tetramethylethylenediamine serving as accelerator; then soaking graphene hydrogel into the monomer solution for solution displacement and standing; and finally, initiating polymerization reaction at the room temperature, so that the biocompatible photo-thermal response self-healing conductive hydrogel is prepared. The preparation method is simple in process, mild in reaction condition, short in reaction time and suitable for industrial production. The hydrogel uses the graphene as a three-dimensional network framework, the graphene is high in reduction degree, chemical stability, electric conductivity and mechanical strength and good in photothermal conversion effect, and the hydrogel shows good self-healing performance within the body temperature range and under near-infrared irradiation.

Description

technical field [0001] The invention belongs to the field of preparation of conductive hydrogel, in particular to a preparation method of a biocompatible photothermal response self-healing conductive hydrogel. Background technique [0002] Self-healing is the ability of a system to repair damage to itself. In nature, the phenomenon of self-healing can be as small as the repair of DNA molecular chains, as large as the healing of wounds in organic organisms. Humans have already tried to develop materials with self-healing ability to be used in many fields of science and technology, and even artificial bionic self-healing materials are used to replace organic life. At present, the main artificial self-healing materials include: polymers, ceramics, cement, metals, etc. Among them, polymer hydrogel is a material widely used in the field of biomedicine. Recently, researchers have reported a variety of self-healing polymer hydrogel material systems. However, most of the self-hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F120/54C08F2/44C08K3/04C08L33/24
Inventor 李耀刚侯成义张青红王宏志
Owner DONGHUA UNIV
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