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Antimicrobial modified sulfonated styrene-based polymer compound and preparation method thereof

A sulfonated styrene and anti-microbial technology, applied in coatings and other directions, can solve the problems of limited application, harsh functional reconstruction conditions, short-lived antibacterial activity, etc. Effect

Pending Publication Date: 2022-05-31
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the antibacterial and antiviral effect is remarkable, its antibacterial activity is short-lived, and the conditions for functional reconstruction are relatively harsh; in addition, the hydration process of the polymer can induce the pH of the local solution to drop to about 2.0, showing a certain degree of corrosion, which limits its application in biological Applications in the medical field

Method used

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  • Antimicrobial modified sulfonated styrene-based polymer compound and preparation method thereof
  • Antimicrobial modified sulfonated styrene-based polymer compound and preparation method thereof

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[0078] The present invention also provides a method for preparing the antimicrobial modified sulfonated styrene-based polymer compound described in the above technical solution, comprising the following steps:

[0079] a) neutralizing the sulfonated styrene-based polymer with an aqueous alkali metal hydroxide solution to obtain a neutralized sulfonated styrene-based polymer;

[0080] b) mixing the neutralized sulfonated styrene-based polymer with an aqueous solution of a cationic compound, and drying to obtain an antimicrobial modified sulfonated styrene-based polymer compound.

[0081] [About step a]:

[0082] a) Neutralizing the sulfonated styrene-based polymer with an aqueous alkali metal hydroxide solution to obtain a neutralized sulfonated styrene-based polymer.

[0083] Wherein, the sulfonated styrene-based polymer is consistent with that described in the previous technical solution, and will not be repeated here.

[0084] In the present invention, the alkali metal in ...

Embodiment 1

[0096] The sulfonated styrene-butadiene rubber polymer (the degree of sulfonation is 40 mol%, the content of styrene is 35wt%) is formed into a film to obtain the sulfonated styrene-butadiene rubber polymer film. Prepare a sodium hydroxide aqueous solution with a mass concentration of 1%, soak the sulfonated styrene-butadiene rubber polymer film in the above aqueous hydroxide solution for 24 hours, wash with water three times and dry at 50°C to obtain a neutralized sulfonated styrene-based polymer . Prepare an aqueous solution of benzalkonium chloride quaternary ammonium salt with a mass concentration of 1%, soak the neutralized sulfonated styrene-based polymer film in the aqueous solution of quaternary ammonium salt for 24 hours, wash with water three times and dry at 50°C for 8 hours to obtain an antimicrobial Modified sulfonated styrene-based polymer membrane (22.1% cationic compound content).

Embodiment 2

[0098] The sulfonated styrene-butadiene rubber polymer (the degree of sulfonation is 40 mol%, the content of styrene is 35wt%) is formed into a film to obtain the sulfonated styrene-butadiene rubber polymer film. Prepare a sodium hydroxide aqueous solution with a mass concentration of 1%, soak the sulfonated styrene-butadiene rubber polymer film in the above aqueous hydroxide solution for 24 hours, wash with water three times and dry at 50°C to obtain a neutralized sulfonated styrene-based polymer . Prepare a polyhexamethylene biguanide hydrochloride aqueous solution with a mass concentration of 1%, soak the neutralized sulfonated styrene-based polymer membrane in the above polyguanidine aqueous solution for 24 hours, wash with water three times and dry at 50°C for 8 hours to obtain Antimicrobially modified sulfonated styrene-based polymer membrane (25.4% cationic compound content).

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Abstract

The invention provides an antimicrobial modified sulfonated styrene-based polymer compound and a preparation method thereof. The antimicrobial modified sulfonated styrene-based polymer compound provided by the invention comprises a sulfonated styrene-based polymer and a cationic compound loaded on the sulfonated styrene-based polymer, wherein the content of styrene in the sulfonated styrene-based polymer is 25wt%-50wt%, and the sulfonation degree is 35mol%-65mol%; the cationic compound is selected from one or more of quaternary ammonium salt, quaternary salt, quaternary phosphonium salt, guanidine salt and pyridinium salt; the biquaternary ammonium salt is single-chain quaternary ammonium salt and / or double-chain biquaternary ammonium salt. The compound provided by the invention can improve the antibacterial property, the antiviral property and the lasting stability of the material, and is safe to use.

Description

technical field [0001] The invention relates to the field of antibacterial and antiviral materials, in particular to an antimicrobial modified sulfonated styrene-based polymer compound and a preparation method thereof. Background technique [0002] In areas where the control of infectious diseases is difficult, such as in hospitals and public places, in order to prevent cross-infection, it is usually necessary to use disinfectants to disinfect all facilities. Cationic compounds are widely used in public health disinfection due to their broad-spectrum bactericidal, virucidal and low-odor properties. However, cationic compounds are small molecular compounds that are easily soluble in water, and are particularly easy to be lost. In order to ensure that public facilities are in a safe state without causing cross-infection, cationic compounds must be frequently sprayed on public facilities, which increases the burden of public health maintenance. Therefore, there is an urgent ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/06C08L9/06C08L55/02C08L23/16C08L51/00C08L51/04
CPCC08J7/06C08J2309/06C08J2355/02C08J2323/16C08J2351/00C08J2351/04
Inventor 宋凌杰孙瑞杨华伟栾世方梁红文
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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