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A kind of preparation method of three-dimensional interpenetrating network hydrogel with pH response

An interpenetrating network and hydrogel technology, applied in the field of hydrogel material preparation technology, can solve the problem of poor water absorption performance of cross-linked copolymerized hydrogel, and achieve the effect of improving water absorption performance

Active Publication Date: 2021-07-13
YANAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a preparation method of a three-dimensional interpenetrating network hydrogel with pH response, which solves the problem of poor water absorption in the cross-linked copolymer hydrogel with pH response

Method used

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  • A kind of preparation method of three-dimensional interpenetrating network hydrogel with pH response

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Comparison scheme
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Embodiment 1

[0026] A preparation method of a three-dimensional interpenetrating network hydrogel with pH response of the present invention is specifically implemented according to the following steps:

[0027] Step 1: Dissolve acrylic acid and acrylonitrile in deionized water, stir evenly, then add initiator potassium persulfate, crosslinking agent N,N'-methylenebisacrylamide, polyvinylpyrrolidone, at 62°C Stirring reaction 2h under constant temperature water bath condition;

[0028] Wherein, the mass ratio of acrylic acid and acrylonitrile is 7:3;

[0029] The ratio of the mass of potassium persulfate to the total mass of acrylic acid and acrylonitrile monomer is 0.1:10;

[0030] The ratio of the mass of N,N'-methylenebisacrylamide to the total mass of acrylic acid and acrylonitrile is 0.1:10;

[0031] The ratio of the mass of polyvinylpyrrolidone to the total mass of acrylic acid and acrylonitrile is 0.1:10;

[0032] The molecular weight of polyvinylpyrrolidone is 40000;

[0033] St...

Embodiment 2

[0035] A preparation method of a three-dimensional interpenetrating network hydrogel with pH response of the present invention is specifically implemented according to the following steps:

[0036] Step 1, dissolve acrylic acid and acrylonitrile in deionized water, stir evenly, then add initiator potassium persulfate, crosslinking agent N,N'-methylenebisacrylamide, polyvinylpyrrolidone, at 60°C Stirring reaction 3h under constant temperature water bath condition;

[0037] Wherein, the mass ratio of acrylic acid and acrylonitrile is 7:3;

[0038] The ratio of the mass of potassium persulfate to the total mass of acrylic acid and acrylonitrile monomer is 0.1:10;

[0039] The ratio of the mass of N,N'-methylenebisacrylamide to the total mass of acrylic acid and acrylonitrile is 0.1:10;

[0040] The ratio of the mass of polyvinylpyrrolidone to the total mass of acrylic acid and acrylonitrile is 0.12:10;

[0041] The molecular weight of polyvinylpyrrolidone is 40000;

[0042] S...

Embodiment 3

[0044] A preparation method of a three-dimensional interpenetrating network hydrogel with pH response of the present invention is specifically implemented according to the following steps:

[0045] Step 1, dissolve acrylic acid and acrylonitrile in deionized water, stir well, then add initiator potassium persulfate, crosslinking agent N,N'-methylenebisacrylamide, polyvinylpyrrolidone, at 65°C Stirring reaction 3h under constant temperature water bath condition;

[0046] Wherein, the mass ratio of acrylic acid and acrylonitrile is 7:3;

[0047] The ratio of the mass of potassium persulfate to the total mass of acrylic acid and acrylonitrile monomer is 0.1:10;

[0048] The ratio of the mass of N,N'-methylenebisacrylamide to the total mass of acrylic acid and acrylonitrile is 0.12:10;

[0049] The ratio of the mass of polyvinylpyrrolidone to the total mass of acrylic acid and acrylonitrile is 0.14:10;

[0050] The molecular weight of polyvinylpyrrolidone is 40000;

[0051] St...

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Abstract

The invention discloses a preparation method of a three-dimensional interpenetrating network hydrogel with pH response. The specific steps are as follows: first, dissolve acrylic acid and acrylonitrile in deionized water, stir evenly, and then add initiator potassium persulfate, cross-linked The joint agent N,N'-methylenebisacrylamide and polyvinylpyrrolidone were stirred and reacted in a constant temperature water bath at 60°C to 75°C for 2h to 5h; after that, soak the reacted solution in deionized water, The unreacted monomers and initiators are removed to obtain the three-dimensional interpenetrating network hydrogel. In this method, acrylic acid and acrylonitrile are used as monomers to synthesize a pH-responsive cross-linked copolymer; the pore size of the hydrogel can be adjusted through the polyvinyl pyrrolidone polymer chain, which can increase the hydrogel at a pH between 8 and 13. Water absorption properties of hydrogels.

Description

technical field [0001] The invention belongs to the technical field of hydrogel material preparation technology, and relates to a preparation method of a three-dimensional interpenetrating network hydrogel with pH response. Background technique [0002] With the development of biomedical engineering technology, hydrogel materials have attracted people's attention and extensive attention, and have broad application prospects in many fields, such as medicine and health, biomedical engineering, cosmetics and other fields. The existing hydrogels are all prepared by cross-linking and copolymerization, but the materials prepared by this method have poor water absorption, and the pH-responsive copolymerization hydrogel has poor water absorption, thus restricting its application in medicine and health. , Applications in the field of biomedical engineering. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing a pH-responsive ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/075C08L33/02C08L39/06C08F220/06C08F220/46C08F222/38
CPCC08F220/06C08J3/075C08J2333/02C08J2439/06C08F220/46C08F222/385
Inventor 魏清渤宋伟付峰
Owner YANAN UNIV