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Phenylboronic acid based hydrogel and preparation method thereof

A phenylboronic acid-based and phenylboronic acid-based vinyl technology, applied in the field of phenylboronic acid-based hydrogel and its preparation, can solve problems such as unbearable, application limitation, large strain or stress, etc., and achieve excellent mechanical properties, simple preparation method, Good effect on fatigue resistance

Inactive Publication Date: 2017-12-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phenylboronic acid-based hydrogels cross-linked by traditional small-molecule covalent cross-linking agents are brittle and unable to withstand large strains or stresses, and their applications are limited

Method used

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  • Phenylboronic acid based hydrogel and preparation method thereof
  • Phenylboronic acid based hydrogel and preparation method thereof
  • Phenylboronic acid based hydrogel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Dissolve 1.35g of acrylamide and 40mg of 3-acrylamidophenylboronic acid in 8.0mL of deionized water, add 4.4mg of ammonium persulfate, blow in argon gas to remove oxygen for 30min, transfer it to a mold under argon atmosphere, and put it in an oven React at 65°C for 8 hours, and initiate radical copolymerization by heating to obtain a phenylboronic acid-based hydrogel.

[0027] figure 1 Tensile photographs and tensile stress-strain curves of the hydrogel prepared for Example 1. Depend on figure 1 It can be seen that the phenylboronic acid group can be highly stretched, can bear a large load, and has high toughness.

Embodiment 2

[0029] Dissolve 1.35g of acrylamide and 80mg of 3-acrylamidophenylboronic acid in 8.0mL of deionized water, add 4.4mg of ammonium persulfate, blow in argon gas for deoxygenation for 30min, transfer it to a mold under argon atmosphere, and put it in an oven React at 65°C for 8 hours, and initiate radical copolymerization by heating to obtain a phenylboronic acid-based hydrogel.

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Abstract

The invention discloses a phenylboronic acid based hydrogel and a preparation method thereof. The hydrogel is obtained by free radical copolymerization of a vinylated functional phenylboronic acid based vinyl monomer and a vinyl monomer. Proportions of raw materials are as follows, in parts by mass: 45-100 parts of water; 0.2-2 parts of a functional monomer; 10-50 parts of a main monomer; 0-0.5 part of a crosslinking agent; and 0.01-0.1 part of an initiator. A free radical copolymerization is initiated by heating: the heating temperature is 45-80 DEG C, and the heating time is 4-48h. According to the invention, the phenylboronic acid based hydrogel is prepared by the free radical copolymerization method, the method is simple, and through changing a hydrogel preparation component content, the method can adjust and control hydrogel performance; the obtained hydrogel has excellent mechanical properties under a relatively low solid content, and has the characteristics of being highly stretchable, having good resilience, having good fatigue resistance and the like; and the obtained hydrogel has stimuli-responsiveness to a glucose concentration and pH.

Description

technical field [0001] The invention relates to polymer materials, in particular to a phenylboronic acid-based hydrogel and a preparation method thereof. Background technique [0002] Hydrogel is a massive material formed by a three-dimensional polymer network highly swollen in water. It contains a large amount of free water and has both solid and liquid characteristics. Due to its outstanding performance in liquid absorption and water retention, it is widely used in daily life and industrial production. It has a very wide range of applications and is a rapidly developing polymer material. [0003] The phenylboronic acid group and the o-dihydroxyl group can form a dynamic covalent interaction, which has glucose stimulation-responsiveness. The publication number is: CN105732887A, and the title of the invention is: "A method for preparing a fast-response glucose-sensitive hydrogel"; and its application", announced the phenylboronic acid-based single or multiple stimuli-respo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F230/06C08J3/075
CPCC08F220/56C08J3/075C08F230/06
Inventor 杨贤鹏王立俞豪杰邓正
Owner ZHEJIANG UNIV
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