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A kind of environment-friendly high antibacterial superabsorbent resin and preparation method thereof

A superabsorbent resin, environment-friendly technology, applied in the field of superabsorbent resin, can solve the problems of poor heat resistance, difficult to degrade cost, etc., achieve mild and easy-to-control reaction conditions, simple preparation method, and facilitate large-scale industrial production Effect

Active Publication Date: 2021-04-20
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the problems that traditional superabsorbent resins are difficult to degrade and antibacterial superabsorbent resins have high cost and poor heat resistance, the present invention provides an environment-friendly high antibacterial superabsorbent resin, which greatly improves the bioavailability of superabsorbent resins. Degradability and antibacterial activity

Method used

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  • A kind of environment-friendly high antibacterial superabsorbent resin and preparation method thereof
  • A kind of environment-friendly high antibacterial superabsorbent resin and preparation method thereof
  • A kind of environment-friendly high antibacterial superabsorbent resin and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] (1) Preparation of epoxy quaternary ammonium salt modified lignosulfonate:

[0039] (a) Dissolve 25g of calcium lignosulfonate in deionized water, configure 12wt% lignosulfonate solution, heat up to 85°C under stirring conditions, and keep warm;

[0040] (b) 5g glycidyltrimethylammonium chloride is dissolved in deionized water, the glycidyltrimethylammonium chloride solution of configuration 25wt%, joins in the lignosulfonate solution dropwise, in Stir and react at 85°C for 12 hours to obtain a reaction solution;

[0041] (c) concentrating the reaction solution under reduced pressure to a viscous slurry, adding absolute ethanol to obtain a flocculent precipitate; filtering the precipitate, washing, and freeze-drying to obtain epoxy quaternary ammonium salt modified lignosulfonate;

[0042] (2) Accurately weigh 20.8g of sodium hydroxide, 15g of acrylamide, 10g of modified lignosulfonate and add 186g of deionized water to stir and dissolve in a beaker. After cooling to r...

Embodiment 2

[0047] (1) Preparation of epoxy quaternary ammonium salt modified lignosulfonate:

[0048] (a) Dissolve 25g of sodium lignosulfonate in deionized water, configure a 15wt% lignosulfonate solution, heat up to 85°C under stirring conditions, and keep warm;

[0049] (b) 10g glycidyltrimethylammonium chloride is dissolved in deionized water, the glycidyltrimethylammonium chloride solution of configuration 50wt%, joins in the lignosulfonate solution dropwise, in Stir and react at 85°C for 8 hours to obtain a reaction liquid;

[0050] (c) concentrating the reaction solution under reduced pressure to a viscous slurry, adding absolute ethanol to obtain a flocculent precipitate; filtering the precipitate, washing, and freeze-drying to obtain epoxy quaternary ammonium salt modified lignosulfonate;

[0051] (2) Accurately weigh 16.7g sodium hydroxide, 10g acrylamide, 15g modified lignosulfonate, add 186g deionized water in a beaker and stir to dissolve, add 50g acrylic acid after cooling...

Embodiment 3

[0056] (1) Preparation of epoxy quaternary ammonium salt modified lignosulfonate:

[0057] (a) Dissolve 25g of sodium lignosulfonate in deionized water, configure a 20wt% lignosulfonate solution, heat up to 85°C under stirring conditions, and keep warm;

[0058] (b) 8g glycidyltrimethylammonium chloride is dissolved in deionized water, the glycidyltrimethylammonium chloride solution of configuration 40wt%, joins in the lignosulfonate solution dropwise, in Stir and react at 85°C for 10 hours to obtain a reaction solution;

[0059] (c) concentrating the reaction solution under reduced pressure to a viscous slurry, adding absolute ethanol to obtain a flocculent precipitate; filtering the precipitate, washing, and freeze-drying to obtain epoxy quaternary ammonium salt modified lignosulfonate;

[0060] (2) Accurately weigh 25g of sodium hydroxide, 5g of acrylamide, 2.5g of modified lignosulfonate, add 186g of deionized water and stir to dissolve in a beaker, add 50g of acrylic aci...

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Abstract

The invention relates to the technical field of superabsorbent resins. In order to solve the problems of difficult degradation of traditional superabsorbent resins and high cost and poor heat resistance of antibacterial superabsorbent resins, an environment-friendly high antibacterial superabsorbent resin and its In the preparation method, the environment-friendly highly antibacterial and superabsorbent resin comprises the following components in parts by weight: 100 parts of acrylic acid; 33.3-50 parts of basic compounds; 10-30 parts of acrylamide; 30 parts; 0.1-0.1 parts of internal cross-linking agent; 0.5-2.0 parts of initiator; 0.05-0.4 parts of external cross-linking agent. The invention has wide sources of raw materials, and the obtained environment-friendly high antibacterial and superabsorbent resin contains biodegradable lignin sulfonate and quaternary ammonium salt antibacterial groups, which greatly improves the biodegradability and antibacterial activity of the superabsorbent resin.

Description

technical field [0001] The invention relates to the technical field of superabsorbent resins, in particular to an environment-friendly high antibacterial superabsorbent resin and a preparation method thereof. Background technique [0002] Super Absorbent Polymer (SAP) is a new type of functional polymer material that contains strong hydrophilic groups and has a three-dimensional network structure after moderate crosslinking. It not only has strong water absorption, can absorb hundreds or even thousands of times its own weight of water, and the absorbed water is not easy to discharge under pressure, and has excellent water retention, so it is widely used in medicine and health , agriculture, forestry and water conservation, desert control and other fields. [0003] Superabsorbent resins can be roughly divided into starch, cellulose and synthetic resins according to different sources of raw materials. Among them, synthetic resin superabsorbent resins are rich in raw materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/24C08F289/00C08F220/06C08F220/56
CPCC08F289/00C08J3/24C08J2333/02C08J2497/00C08F220/06
Inventor 王旭陈思费俊豪马猛施燕琴何荟文
Owner ZHEJIANG UNIV OF TECH