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Preparation method and applications of antibacterial guanidine salt copolymer

An antibacterial guanidine and copolymer technology, applied in the field of polymer synthesis, can solve complex problems and achieve the effect of convenient use

Inactive Publication Date: 2016-12-21
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the complexity and wide range of material applications require further use of various methods to broaden the application of guanidinium polymers

Method used

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  • Preparation method and applications of antibacterial guanidine salt copolymer
  • Preparation method and applications of antibacterial guanidine salt copolymer
  • Preparation method and applications of antibacterial guanidine salt copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 21 grams (0.03 moles) of polyhexylguanidine hydrochloride (A1, number average molecular weight 700Da) into a Haake rheometer at a temperature of 120°C, and after melting, add 38.4 grams of polypropylene glycol diglycidyl ether (B1, number Average molecular weight 640Da, 0.06 mole), under the condition of rotating speed 60 rpm, reacted for 60 minutes, obtained the block copolymer of polyhexylguanidine hydrochloride-polypropylene glycol diglycidyl ether, marked as B1A1B1.

Embodiment 2

[0022] Add 23.4 grams (0.0275 moles) of polyhexylguanidine phosphate (A2, number average molecular weight 850Da) into a Haake rheometer at a temperature of 130°C, and after melting, add 35.2 grams of polypropylene glycol diglycidyl ether (B1, number average Molecular weight 640Da, 0.055 mol), under the condition of rotating speed 60 revs / min, react for 50 minutes, obtain the block copolymer of polyhexylguanidine phosphate-polypropylene glycol diglycidyl ether, marked as B1A2B1.

Embodiment 3

[0024] 14 grams (0.02 moles) of polyhexylguanidine hydrochloride (A1, number average molecular weight 700Da) was dissolved with 100 grams of dimethyl sulfoxide to form a solution and then added to a 250ml three-necked flask, and polypropylene glycol diglycidyl ether 19.2 Gram (B1, number average molecular weight 640Da, 0.03 moles), heated to 40°C for 120 minutes under magnetic stirring to obtain a polyhexylguanidine hydrochloride-polypropylene glycol diglycidyl ether block copolymer solution. Then, the solvent was removed by dialysis in water for 48 hours using a dialysis bag with a molecular weight cut off of 1000, to obtain an aqueous dispersion of the block copolymer. The resulting block copolymer is labeled B1A1B1A1B1.

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Abstract

A preparation method of an antibacterial guanidine salt copolymer. The antibacterial guanidine salt copolymer is prepared through copolymerization from a hydrophilic antibacterial guanidine salt and a hydrophobic polymer by means of a solution reaction or a melt reaction, reaction molar ratio of the hydrophilic antibacterial guanidine salt to the hydrophobic polymer being 0.5-2. The antibacterial guanidine salt copolymer is amphiphilic and has adjustable terminal groups, so that the copolymer can be directly added to resin having a reactive functional group, and therefore, the antibacterial guanidine salt copolymer is tightly bonded to the basic resin through the reaction between the antibacterial guanidine salt copolymer and the basic resin so that a corresponding product has durable antibacterial function. The copolymer, whether in an aqueous system or a non-aqueous system, can be applied to achieve the antibacterial function, so that usage of the guanidine salt copolymer is greatly broadened.

Description

technical field [0001] The invention relates to a kind of polymer synthesis, in particular to a preparation method of an antibacterial guanidinium salt copolymer and an application of the antibacterial guanidinium salt copolymer. Background technique [0002] With the improvement of people's living standards, materials and products with antibacterial or bactericidal functions have attracted more and more attention. Polymer materials are widely used in daily life, and their antibacterial function is obtained by adding antibacterial agents to polymer materials and products. There are many kinds of antibacterial agents, which can be roughly divided into three categories: natural, inorganic and organic according to their chemical composition. Natural antibacterial agents are restricted by raw materials and processing conditions, making industrialization difficult and expensive. Organic small molecule antibacterial agents have the advantages of fast sterilization speed and wide...

Claims

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Application Information

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IPC IPC(8): C08G81/00D21H19/12D21H21/36
CPCC08G81/00D21H19/12D21H21/36
Inventor 危大福李宗亮管涌郑安呐许祥陈洁
Owner EAST CHINA UNIV OF SCI & TECH
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