A kind of intelligent optical hydrogel and its preparation method

A hydrogel and optical technology, applied in the field of intelligent optical hydrogel and its preparation, can solve the problems of scarcity and achieve the effect of intelligent response

Active Publication Date: 2022-02-18
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the hydrophobicity of metal complexes, there are very few related reports

Method used

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  • A kind of intelligent optical hydrogel and its preparation method
  • A kind of intelligent optical hydrogel and its preparation method
  • A kind of intelligent optical hydrogel and its preparation method

Examples

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Embodiment 1

[0033] Intelligent optical hydrogel, hydrogel comprising acrylamide, acrylic acid, (E) -N- (4- (2- (2-hydroxybenylene) -Chydrazide) phenyl) Limic acrylamide, gelatin and aluminum ions, the mass of (E) -N- (4- (2-(2-hydroxyphenylene) -tylidelated) phenyl) methacrylamide is acrylamide 2% of the mass, the mass of the acrylic acid is 15% of acrylamide mass, and the mass of the gelatin is 35% of the total solid content.

[0034] The preparation method of the hydrogel of this example is:

[0035] (1) 6 g of 4-aminobenzoate was added to 30 ml of 80% hydrated hydrophilic hydrazine aqueous solution, and the resulting mixture was reacted at 80 ° C at a nitrogen atmosphere 24 h; then 10 ml of ethanol was added, and the reaction was continued for 1 h. After the reaction was completed, the reaction was cooled at room temperature. The system was filtered to give a crude product, recrystallized in ethanol, vacuum dried overnight to give a white solid product 4-aminobenzide hydrazide;

[0036] (2...

Embodiment 2

[0040] An intelligent optical, hydrogel, said hydrogel comprises acrylamide, acrylic acid, (E) -N- (4- (2- (2- hydroxy-methylene) - formyl hydrazino) phenyl) methyl acrylamide, gelatin, and aluminum ion, the (E) -N- (4- (2- (2- hydroxy-methylene) - formyl hydrazino) phenyl) methacrylamide mass acrylamide 2% of the mass, the mass of acrylic acid was 15% by mass of acrylamide, the gelatin mass of the total solids content of 44.6%.

[0041] Preparation Example hydrogels of the present embodiment is: HHPMA acrylamide monomer and 178mg (2.5 mmol) obtained in Example 1 3.5mg embodiment after mixing, addition of 975μL 10% aqueous solution of Tween 80 continued stirring 50min, to obtain a uniform emulsion ; after addition of 25μL of acrylic acid and 4.5mg (0.02mmol) photoinitiator Irgacure 2959, and filled with nitrogen; after mixing the emulsion is injected into the reaction vessel 1mm thick pad of silica gel sandwiched between a pair consisting of glass, after the addition of gelatin 15...

Embodiment 3

[0043] An intelligent optical, hydrogel, said hydrogel comprises acrylamide, acrylic acid, (E) -N- (4- (2- (2- hydroxy-methylene) - formyl hydrazino) phenyl) methyl acrylamide, gelatin, and aluminum ion, the (E) -N- (4- (2- (2- hydroxy-methylene) - formyl hydrazino) phenyl) methacrylamide mass acrylamide 2% of the mass, the mass of acrylic acid was 15% by mass of acrylamide, the gelatin mass of the total solids content of 51.8%.

[0044] Preparation Example hydrogels of the present embodiment is: HHPMA acrylamide monomer and 178mg (2.5 mmol) obtained in Example 1 after mixing 3.5mg embodiment, Tween 80 was added 975μL 10% aqueous continued stirring 50min, to obtain a homogeneous emulsion; after addition of 25μL of acrylic acid and 4.5mg (0.02mmol) photoinitiator Irgacure 2959, and filled with nitrogen; after mixing the emulsion is injected into the reaction vessel 1mm thick pad of silica gel sandwiched between a pair consisting of glass, after the addition of 200mg of gelatin, and...

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Abstract

The invention relates to an intelligent optical hydrogel and a preparation method thereof. The hydrogel contains acrylamide, acrylic acid, (E)-N-(4-(2-(2-hydroxybenzylidene)-formyl Hydrazino)phenyl)methacrylamide, gelatin and aluminum ion, the (E)-N-(4-(2-(2-hydroxybenzylidene)-formylhydrazino)phenyl)methyl The mass of the acrylamide is 1%-3% of the mass of the acrylamide, the mass of the acrylic acid is 10%-20% of the mass of the acrylamide, and the mass of the gelatin is 32%-48% of the total solid content. The hydrogel of the present invention utilizes acrylic acid and (E)-N-(4-(2-(2-hydroxybenzylidene)-formylhydrazide) phenyl)methacrylamide ( HHPMA) forms a polymer network, and gelatin is supplemented to obtain a semi-interpenetrating structure; the hydrogel has intelligent fluorescence responsiveness, excellent shape memory ability and good self-healing property.

Description

Technical field [0001] The present invention relates to an intelligent optical hydrogel and a preparation method thereof, which belongs to the technical field of polymer material. Background technique [0002] High molecular hydrogel is a polymeric material of a mesh structure. The polymer chain forms a three-dimensional solid by crosslinking, and the water acts as a dispersion medium. With the concept of "smart materials" in recent years, it is increasingly popular in recent years. In the face of external stimuli, it will develop colorful optical hydrogel that produce color or fluorescence, which is also developed, such hydrogels in sensors, There are great application value in terms of probes, light-emitting components, and optical control devices. [0003] The intelligent optical hydrogel can be constructed by metal complexing units, and the hydrogel can be self-repairing performance, extending its use period; on the other hand by adjusting the metal complex Combined efficienc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/26C08L89/00C08J3/075C08J3/24C08K3/16C08F220/56C08F220/06C08F220/60C08F2/48C09K11/06
CPCC08J3/075C08J3/24C08F220/56C08F2/48C09K11/06C08K2003/164C08J2333/26C08J2489/00C09K2211/1425
Inventor 汤柳燕
Owner WUYI UNIV
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