Preparation method of light/biological dual-degradation high-water-absorption resin based on natural polymer

A technology of super absorbent resin and natural polymer, applied in the field of super absorbent resin materials, can solve the problems of single degradation mode and poor degradation performance, and achieve the effects of reducing environmental pollution, convenient post-processing and mild reaction conditions

Inactive Publication Date: 2016-08-31
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of existing superabsorbent resin materials such as poor degradation performance and single degradation method, and provide a method for preparing a photo / biological double-degradable superabsorbent resin based on natural polymers. The method adopts natural polymers as The composite superabsorbent resin was synthesized by adding nano-titanium dioxide particles to the substrate, which greatly enhanced the degradation efficiency and reduced environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Dissolve 10 parts (parts by weight, the same below) of acrylic acid distilled under reduced pressure in water, put the solution into a conical flask and put it in an ice-water bath, and use a constant pressure separatory funnel to the cone under magnetic stirring. Add NaOH solution into the shaped bottle to prepare an acrylic acid solution with a neutralization degree of 75%. After the acrylic acid solution has risen to room temperature, add 0.06 parts of potassium persulfate, 0.008 parts of N,N-methylenebisacrylamide and 1.5 parts of acrylamide, stir and mix well to obtain a mixed solution.

[0019] (2) Fully dissolve 0.8 parts of Span 80 in 100 parts of cyclohexane, transfer it into a four-necked flask equipped with mechanical stirring, reflux condenser, thermometer and air guide tube, then add 1 part of starch and 1 part of Nano-titanium dioxide particles were stirred and heated to 45° C., filled with nitrogen and kept in a nitrogen atmosphere in a four-necked fl...

Embodiment 2

[0022] (1) Dissolve 10 parts of acrylic acid distilled under reduced pressure in water, put the solution into a conical flask and place it in an ice-water bath, and add NaOH solution to the conical flask with a constant pressure separatory funnel under magnetic stirring to form Acrylic acid solution with a neutralization degree of 75%. After the acrylic acid solution has risen to room temperature, add 0.08 parts of potassium persulfate, 0.009 parts of N,N-methylenebisacrylamide and 1.75 parts of acrylamide, and stir thoroughly to obtain a mixed solution.

[0023] (2) Fully dissolve 0.9 parts of Span 80 in 100 parts of cyclohexane, transfer it into a four-necked flask equipped with mechanical stirring, reflux condenser, thermometer and air duct, and then add 1 part of starch and 1 part of Nano-titanium dioxide particles were stirred and heated to 45° C., filled with nitrogen and kept in a nitrogen atmosphere in a four-necked flask.

[0024] (3) The mixed solution obtained in (...

Embodiment 3

[0026] (1) Dissolve 10 parts of acrylic acid distilled under reduced pressure in water, put the solution into a conical flask and place it in an ice-water bath, and add NaOH solution to the conical flask with a constant pressure separatory funnel under magnetic stirring to form Acrylic acid solution with a neutralization degree of 75%. After the acrylic acid solution has risen to room temperature, add 0.1 part of potassium persulfate, 0.01 part of N,N-methylenebisacrylamide and 2.0 parts of acrylamide, and stir thoroughly to obtain a mixed solution.

[0027] (2) Fully dissolve 1.0 part of Span 80 in 100 parts of cyclohexane, transfer it into a four-necked flask equipped with mechanical stirring, reflux condenser, thermometer and air tube, and then add 1 part of starch and 1 part of Nano-titanium dioxide particles were stirred and heated to 45° C., filled with nitrogen and kept in a nitrogen atmosphere in a four-necked flask.

[0028] (3) The mixed solution obtained in (1) was...

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Abstract

The invention relates to a preparation method of light/biological dual-degradation high-water-absorption resin based on natural polymer. According to the method, with cyclohexane as the solvent, a Span-series surface active agent as the dispersing agent, potassium persulfate as the initiator and N,N-methylenebis acrylamide as the crosslinking agent, by means of a reverse-phase suspension polymerization method, starch or carboxymethylcellulose or chitosan or other natural polymer reacts with acrylic acid and acrylamide monomer to prepare the light/biological dual-degradation high-water-absorption resin. According to the high-water-absorption resin, with natural polymer as the biological degradation source and nanometer TiO2 particles as the light degradation source, the nanometer TiO2 particles are evenly distributed in the high-water-absorption resin, the problem that ordinary high-water-absorption resin is difficult to degrade can be effectively solved, and the environment pollution problem is solved.

Description

technical field [0001] The invention relates to the technical field of superabsorbent resin materials, in particular to a method for preparing a photo / biological double-degradation superabsorbent resin based on natural polymers. Background technique [0002] Super Absorbent Polymer, also known as Super Absorbent Polymer (SAP for short), is a polymer polymer containing strong hydrophilic groups such as carboxyl and hydroxyl groups and has a highly cross-linked water-absorbing and swelling three-dimensional network structure. things. The superabsorbent resin has a large water absorption capacity and can absorb distilled water hundreds of times its own weight. After absorbing water, its water retention performance is also very strong. Even under heating and pressure conditions, it is not easy to lose water. The stability is also very good. [0003] In the 1980s, the research on the preparation of superabsorbent resin composite materials by using some natural polymer substance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F251/02C08F220/06C08F222/38C08F220/56C08F2/32C08F2/44C08K3/22
CPCC08F2/32C08F2/44C08F251/00C08F251/02C08K3/22C08K2003/2241C08K2201/011C08F220/06
Inventor 黎俊波何源余响林
Owner WUHAN INSTITUTE OF TECHNOLOGY
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