Full-polysaccharide derivative-based ultra-water-absorption gel as well as preparation method and application thereof

A polysaccharide derivative and superabsorbent technology, which is applied in the field of functional polymers and biomedical materials, can solve problems such as environmental impact and insufficient degradability, and achieve outstanding adsorption effects, excellent water absorption, and broad application prospects

Inactive Publication Date: 2018-05-08
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, superabsorbent gels are often used in the fields of medicine, hygiene, and agriculture, but many superabsorbent gels are prepared entirely or partially from synthetic polymers, so there is a problem of insufficient degradability, which will affect the environment

Method used

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  • Full-polysaccharide derivative-based ultra-water-absorption gel as well as preparation method and application thereof
  • Full-polysaccharide derivative-based ultra-water-absorption gel as well as preparation method and application thereof
  • Full-polysaccharide derivative-based ultra-water-absorption gel as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A full polysaccharide derivative-based superabsorbent gel is prepared by the following method:

[0040] (1) Add 0.34g succinyl chitosan to 20mL 30g·L -1 NaOH solution, stirring until all dissolved;

[0041] (2) According to the blending ratio of the two polysaccharide derivatives of 7:3 (the mass ratio of carboxymethyl cellulose and succinyl chitosan), add 0.80 g of carboxymethyl cellulose, and stir at 30 ° C until carboxymethyl cellulose The base cellulose was completely dissolved, and the concentration of carboxymethyl cellulose was adjusted to 40g·L -1 ;

[0042] (3) adding relative carboxymethyl cellulose and succinyl chitosan quality and 52% epichlorohydrin to the above-mentioned polysaccharide derivative solution, and stirring rapidly at 30° C. to fully mix the epichlorohydrin;

[0043] (4) the mixed solution was reacted at 60°C for 4 hours;

[0044] (5) taking out the prepared wet superabsorbent gel, washing with deionized water 3 times, and then washing with...

Embodiment 2

[0056] A full polysaccharide derivative-based superabsorbent gel is prepared by the following method:

[0057] (1) Add 0.23g succinyl chitosan to 20mL 30g·L -1 NaOH solution, stirring until all dissolved;

[0058] (2) According to the blending ratio of the two polysaccharide derivatives of 8:2 (the mass ratio of carboxymethyl cellulose and succinyl chitosan), add 0.90 g of carboxymethyl cellulose, and stir at 30°C until carboxymethyl cellulose The base cellulose was completely dissolved, and the concentration of carboxymethyl cellulose was adjusted to 45g·L -1 ;

[0059] (3) adding relative carboxymethyl cellulose and succinyl chitosan quality and 52% epichlorohydrin to the above-mentioned polysaccharide derivative solution, and stirring rapidly at 30° C. to fully mix the epichlorohydrin;

[0060] (4) the mixed solution was reacted at 60°C for 4 hours;

[0061] (5) taking out the prepared wet superabsorbent gel, washing with deionized water 3 times, and then washing with e...

Embodiment 3

[0066] A full polysaccharide derivative-based superabsorbent gel is prepared by the following method:

[0067] (1) Add 0.20g succinyl chitosan to 20mL 15g·L -1 NaOH solution, stirring until all dissolved;

[0068] (2) According to the blending ratio of the two polysaccharide derivatives of 8:2 (the mass ratio of carboxymethyl cellulose and succinyl chitosan), add 0.80 g of carboxymethyl cellulose, and stir at 30 ° C until carboxymethyl cellulose The base cellulose was completely dissolved, and the concentration of carboxymethyl cellulose was adjusted to 40g·L -1 ;

[0069] (3) adding relative carboxymethyl cellulose and succinyl chitosan quality and 59% epichlorohydrin to the above-mentioned polysaccharide derivative solution, and stirring rapidly at 30°C to fully mix the epichlorohydrin;

[0070] (4) the mixed solution was reacted at 60°C for 4 hours;

[0071] (5) taking out the prepared wet superabsorbent gel, washing with deionized water 3 times, and then washing with e...

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Abstract

The invention discloses a full-polysaccharide derivative-based ultra-water-absorption gel as well as a preparation method and application thereof. The ultra-water-absorption gel adopts natural polysaccharide derivatives (carboxymethyl cellulose and succinyl chitosan) as basic materials, so that the resource is rich, the biological compatibility, the degradability and the sustainability are good, and the environmental pollution can be avoided. The ultra-water-absorption gel is excellent in comprehensive performance, and is significant in water absorption performance and performance for absorbing various physiological solutions, remarkable in adsorption performance, water retention performance, re-swelling performance and pH sensitivity, and reusable. Therefore, the ultra-water-absorption gel is expectable to be used in environmental protection (waste water treatment), biological medical materials and personal hygienic materials.

Description

technical field [0001] The invention belongs to the technical field of functional macromolecules and biomedical materials, and in particular relates to a whole polysaccharide derivative-based superabsorbent gel and a preparation method and application thereof. Background technique [0002] The non-degradable polymer material products often used in modern daily life have produced a large amount of "white pollution", which has caused serious damage to the ecological environment. In recent years, due to the increasing scarcity of non-renewable petroleum resources and the gradual enhancement of public awareness of environmental protection, the comprehensive development, utilization and industrialization of biomass polymers has become one of the research hotspots. Compared with synthetic polymers based on petroleum products, biomass polymers not only have the advantages of abundant reserves, continuous regeneration and low cost, but also their non-toxic and biodegradable characte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/28C08L5/08C08J3/24
CPCC08J3/246C08J2301/28C08J2405/08
Inventor 何广华简加毅赵洒柴赟
Owner WUHAN UNIV OF TECH
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