Hydrogel sensing film capable of sequentially detecting anions, metal cations and dye molecules and preparation method thereof

A metal cation and sequential detection technology, which is applied in the direction of material analysis, material analysis, and measuring devices using sound waves/ultrasonic waves/infrasonic waves, can solve problems such as not found, and achieve the effect of improving the adsorption frequency response and flexible adjustment
CN110294858AActive Publication Date: 2019-10-01CHANGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGZHOU UNIV
Publication Date
2019-10-01

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Abstract

The invention discloses a hydrogel sensing film capable of sequentially detecting anions, metal cations and dye molecules and a preparation method thereof, belonging to the field of polymer hydrogel materials. The structure and the performance of sensing anions, metal cations and dye molecules of the hydrogel sensing film can be flexibly adjusted by adjusting the molecular weight and the acting time (soaking time) of chitosan in situ. Firstly, chitosan / polyacrylamide composite hydrogel is prepared, then different anionic solutions are used for post-crosslinking to generate a rigid chitosan ionnetwork, then metal cation solutions are used for crosslinking, and then alkaline solutions are used for reduction to obtain chitosan / polyacrylamide / inorganic particle composite hydrogel, and finallydye molecules are adsorbed to obtain a hybrid chitosan / polyacrylamide ion-covalent double-crosslinking network hydrogel film. The hybrid chitosan / polyacrylamide ion-covalent double-crosslinking network hydrogel film has a wide application prospect in the fields of sensors, capacitors and the like.
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Description

technical field

[0001] The invention belongs to the field of polymer hydrogel materials, and in particular relates to a hydrogel sensing membrane capable of sequentially detecting anions, metal cations and dye molecules, a preparation method and application thereof. The hydrogel sensing membrane for highly sensitive detection of anions, metal cations and dye molecules is obtained through the preparation method. Background technique

[0002] As we all know, polymer hydrogel is a three-dimensional cross-linked network structure, which is insoluble in water, but can swell in water. It has great application prospects in controlled release, tissue regeneration and biosensors. However, the bottleneck problem faced in the application process of hydrogel is how to use the characteristics of the hydrogel network structure to easily introduce functional groups to expand the functional applications of hydrogel films such as sensing and detection applications, so the development of fun...

Claims

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