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Antibacterial organic silicon elastomer as well as preparation method and application thereof

An elastomer and silicone technology, which is applied in the field of preparation of antibacterial silicone elastomers, can solve the problems of excellent electrical conductivity and inability to have both, and achieve the effects of excellent electrical conductivity, universality and simple operation method.

Active Publication Date: 2021-10-01
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned materials cannot possess excellent electrical conductivity, sensitive sensing ability, antibacterial ability and long-term stability at the same time.

Method used

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  • Antibacterial organic silicon elastomer as well as preparation method and application thereof
  • Antibacterial organic silicon elastomer as well as preparation method and application thereof
  • Antibacterial organic silicon elastomer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0065] The preparation method of the antibacterial silicone elastomer of the present invention, a preferred embodiment, comprises: containing amino polysiloxane derivative A and monomer derivative B containing catechol residue and containing disulfide bond Carboxylic acid derivative C is dissolved in tetrahydrofuran and reacted at 50°C to 70°C for 12 to 24 hours to obtain polysiloxane derivative D containing amide bonds, disulfide bonds and catechol residues. React the polysiloxane derivative D containing amide bonds, disulfide bonds and catechol residues with zinc salt in tetrahydrofuran at 50°C to 70°C for 2 to 6 hours to obtain amide bonds and disulfide bonds Polysiloxane derivative E with metal coordination bond. Ultrasonic disperse the silver nanoparticles F into the organic silicon polymer network, stir and ultrasonically vibrate for 1 hour, solidify and form a film, and obtain the organic silicon composite material.

[0066] In order to achieve the long-term use stabil...

Embodiment 1

[0079] Dissolve 20g of branched polydimethylaminosiloxane (Mn: 2000), 0.8g of 3,4-dihydroxybenzoic acid (98% purity) and 0.72g of 3,3'-dithiodipropionic acid in an appropriate amount In tetrahydrofuran, mix uniformly at 60° C., and react for 12 hours to obtain polysiloxane containing disulfide bonds, amide bonds and catechol residues. Then 0.36g of zinc chloride was dissolved in tetrahydrofuran and added to the prepolymer solution, and the reaction was continued for 2h to obtain polysiloxane derivatives containing amide bonds, disulfide bonds and catechol residues. 10 g of polysiloxane containing amide bonds, disulfide bonds and catechol residues and 1 g of silver nanoparticles were stirred at room temperature and ultrasonicated for 1 hour to obtain an antibacterial silicone elastomer.

[0080] Cut the antibacterial silicone elastomer into a dumbbell shape (length×width×thickness: 50×4×1mm 3 ), the sample was broken at room temperature by an Instron3343 electronic universal t...

Embodiment 2

[0084] The procedure described in Example 1 was repeated, except that 0.8 g of 3,4-dihydroxybenzoic acid was replaced by 0.88 g of 3,4-dihydroxyphenylacetic acid (purity: 98%).

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Abstract

The invention relates to an antibacterial organic silicon elastomer as well as a preparation method and application thereof. The antibacterial organic silicon elastomer is prepared from catechol residue-containing 3, 4-dihydroxy benzoic acid B and disulfide bond-containing 3, 4-dihydroxy benzoic acid B; the preparation method comprises the following steps: modifying amino-functionalized polysiloxane A by using 3, 3 '-dithiodipropionic acid C, and after dehydration reaction, respectively connecting catechol residues and disulfide with siloxane through amido bonds to generate a polysiloxane derivative D containing amido bonds, disulfide bonds and catechol residues. And then adding zinc chloride into the polysiloxane derivative D to obtain a polysiloxane derivative E containing an amido bond, a disulfide bond and a metal coordination bond. A polysiloxane derivative E containing an amido bond, a disulfide bond and a metal coordination bond and silver nanoparticles are subjected to composite stirring and ultrasonic treatment to obtain the organic silicon elastomer based on the hydrogen bond, the metal coordination bond and the disulfide bond, and the organic silicon elastomer has efficient antibacterial ability, excellent conductivity, sensitive sensing ability and self-repairing ability.

Description

technical field [0001] The invention belongs to the field of flexible composite materials, and in particular relates to a preparation method and application of an antibacterial silicone elastomer. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] With the continuous development of polymer composite materials, the demand for various flexible composite conductive devices in people's daily life is increasing. Among them, the most prominent research fields are flexible sensing, electronic skin, wearable electronic products, Medical equipment and other directions. The research and development of strain sensors has promoted the development of artificial intelligence, epidermal m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/08C08K3/08C08G77/398C08G77/392
CPCC08K3/08C08G77/398C08G77/392C08K2003/0806C08L83/08
Inventor 刘月涛王哲张德金张凯铭高传慧武玉民
Owner QINGDAO UNIV OF SCI & TECH
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