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首页> 外文期刊>The Journal of the Textile Institute. 1, Fibre Science and Textile Technology >Antibacterial activity of quaternary ammonium salt grafted cotton
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Antibacterial activity of quaternary ammonium salt grafted cotton

机译：季铵盐接枝棉的抗菌活性

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摘要

Cotton having good antibacterial activity can be obtained without the need for a binding chemical as a cross linker or the need for chemically pre-trcated antibacterial agent. The procedure of synthesis consists in grafting an alkali-cellulose fibre by a quaternary ammonium salt: Epoxy propy-ltrimethylammonium chloride (EPTMAC). The characterization of grafted cotton (EPTMAC-Cotton) has been targeted on the nitrogen and the methyl group in the ammonium graft structure, by using some analytical techniques, such as infrared, NMR spectroscopy, and volumetric measurement. The antibacterial activity of EPTMAC-Cotton has been studied using four kinds of bacterial stains (Escherichia colt 25922, Pseudomonas aeruginosa 27853, Staphylococcus aureus 259223 and Salmonella LT2DT104 ly-phimirium). An optimization of conditions of culture medium has been carried out for the bacterial strain for which the modified cotton presents the best antibacterial activity. This optimization is achieved while varying the most important parameters influencing the bacterial growth. We have chosen the pH and the sodium chloride concentration as variable parameters, and we have applied an experiment plant, in order to consider all possible combinations of experiments, and therefore, to estimate the effect of each factor, as well as the effect of their interaction. It has been noticed that a quaternary ammonium salt (EPTMAC) is an efficient antibacterial agent, especially against salmonella in alkaline medium slightly concentrated in salt, and its action depends, in some manner, on the whitening procedure of cotton.
机译：可以获得具有良好抗菌活性的棉花，而无需结合化学试剂作为交联剂或不需要化学预处理的抗菌剂。合成过程包括用季铵盐接枝碱纤维素纤维：环氧丙基-三甲基氯化铵（EPTMAC）。通过使用一些分析技术（例如红外，NMR光谱和体积测量），嫁接棉的表征（EPTMAC-Cotton）已针对铵接枝结构中的氮和甲基。已使用四种细菌染色剂（大肠埃希氏菌25922，铜绿假单胞菌27853，金黄色葡萄球菌259223和沙门氏菌LT2DT104 ly-phimirium）研究了EPTMAC-Cotton的抗菌活性。对于改性棉表现出最佳抗菌活性的细菌菌株，已经对培养基的条件进行了优化。在改变影响细菌生长的最重要参数的同时，实现了这种优化。我们选择了pH值和氯化钠浓度作为可变参数，并应用了一个实验工厂，以考虑所有可能的实验组合，从而估算每个因素的影响以及它们的影响。相互作用。已经注意到，季铵盐（EPTMAC）是一种有效的抗菌剂，特别是对盐中浓度稍高的碱性培养基中的沙门氏菌，其作用在某种程度上取决于棉花的增白过程。

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