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Anion-cation polyelectrolyte composite material and its preparation process by salt inhibition method

A technology of cationic polymerization and composite materials, which is applied in the field of insoluble and infusible anionic-cationic polyelectrolyte composite materials and the preparation technology of the salt inhibition method, can solve the problems of long time, difficulty in continuous large-scale processing, etc., and achieves sensitivity to environmental changes. Effect

Active Publication Date: 2021-04-02
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the preparation process of the polyelectrolyte composite material in the prior art takes a long time and is difficult to carry out continuously on a large scale, and provides a kind of anion-cation polyelectrolyte composite material and its salt-inhibited preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The salt-inhibition preparation process of anion-cation polyelectrolyte composite fibers, its specific steps are as follows:

[0027] (1) prepare respectively the aqueous solution of chitosan and the aqueous solution of sodium alginate; Wherein, the mass concentration of the aqueous solution of chitosan is 0.5%, the mass concentration of the aqueous solution of sodium alginate is 0.7%;

[0028] (2) adding potassium chloride respectively in the aqueous solution of chitosan and the aqueous solution of sodium alginate;

[0029] (3) The two solutions are mixed to obtain a mixed solution; wherein, the mol ratio of the ionizable cationic group of chitosan and the ionizable anionic group of sodium alginate in the mixed solution is 1:99, and the add-on of potassium chloride is 3% of the mass of the mixture;

[0030] (4) Transporting the mixed solution to ethanol for solidification and molding to obtain anion-cation polyelectrolyte composite fibers;

[0031] (5) Wash the anion...

Embodiment 2

[0034] The salt-inhibition preparation process of anion-cation polyelectrolyte composite fibers, its specific steps are as follows:

[0035] (1) prepare respectively the aqueous solution of polydiallyl dimethyl ammonium chloride and the aqueous solution of sodium carboxymethyl cellulose; Wherein, the mass concentration of the aqueous solution of polydiallyl dimethyl ammonium chloride is 1%, The mass concentration of the aqueous solution of sodium carboxymethylcellulose is 1%;

[0036] (2) adding sodium acetate in the aqueous solution of polydiallyl dimethyl ammonium chloride;

[0037] (3) Mix the solution obtained in step (2) with the aqueous solution of sodium carboxymethylcellulose obtained in step (1) to obtain a mixed solution; wherein, the ionizable polydiallyldimethylammonium chloride in the mixed solution The molar ratio of the ionizable anion group of the cationic group to the sodium carboxymethylcellulose is 1:45, and the addition of sodium acetate is 4% of the mixed...

Embodiment 3

[0042] The salt-inhibition preparation process of anion-cation polyelectrolyte composite fibers, its specific steps are as follows:

[0043] (1) Prepare the aqueous solution of polyallylamine and the aqueous solution of sodium polyacrylate respectively; Wherein, the mass concentration of the aqueous solution of polyallylamine is 1.5%, the mass concentration of the aqueous solution of sodium polyacrylate is 1.6%;

[0044](2) Potassium chloride is added in the aqueous solution of sodium polyacrylate;

[0045] (3) Mix the solution obtained in step (2) with the aqueous solution of polyallylamine obtained in step (1) to obtain a mixed solution; wherein, the ionizable cationic group of polyallylamine in the mixed solution and sodium polyacrylate The molar ratio of the ionizable anion group is 1:80, and the addition of potassium chloride is 5% of the mixed solution quality;

[0046] (4) Transporting the mixed solution to N,N-dimethylformamide for solidification and molding to obtain...

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Abstract

The invention relates to an anion-cation polyelectrolyte composite material and a salt-inhibition-method preparation process thereof. The preparation process comprises the following steps: deliveringa mixed solution which mainly comprises a cationic polyelectrolyte, an anionic polyelectrolyte, a monovalent salt and a solvent I into a solvent II for solidification forming to obtain the anion-cation polyelectrolyte composite material, wherein the monovalent salt is a salt composed of monovalent metal ions and monovalent anions, the solvent II can be dissolved with the solvent I in any proportion, and the solvent II and the solvent I cannot dissolve the anion-cation polyelectrolyte composite material. The prepared anion-cation polyelectrolyte composite material is formed by combining the cationic polyelectrolyte and the anionic polyelectrolyte through electrostatic force between ionizable groups, and the anion-cation polyelectrolyte composite material is insoluble in water and common organic solvents and cannot be melted. The preparation process is simple, environment-friendly and suitable for popularization, and the prepared polyelectrolyte composite material is sensitive to environmental change, environment-friendly and biodegradable.

Description

technical field [0001] The invention belongs to the technical field of polyelectrolyte materials, and relates to an anion-cation polyelectrolyte composite material and its salt-inhibition method preparation process, in particular to an insoluble and infusible anion-cation polyelectrolyte composite material and its salt-inhibition method preparation process. Background technique [0002] With the increasing demand for functional polymer materials, some previous polymer materials have been difficult to further develop. Polyelectrolytes, including synthetic and natural sources, have a wide range of sources, are easy to use, are water-soluble, and are sensitive to various environmental stimuli, and are suitable for the preparation and development of functional materials. Polyelectrolyte composite material is a material composed of cationic polyelectrolyte and anionic polyelectrolyte in a certain proportion. In addition to the properties of two different polyelectrolytes, due to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/18D01F8/10D01F8/02D01F1/10
CPCD01F1/10D01F8/02D01F8/10D01F8/18
Inventor 杨曙光黄文弢郎文源
Owner DONGHUA UNIV
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