Antimicrobial PET fabric surface fabricated via vapor-phase assisted polymerization
首发时间:2013-11-28
Abstract:Antimicrobial PET fabrics were fabricated via a vapor-phase assisted polymerization (VAP) process using vaporized 3-propenyl-5, 5-dimethylhydantoin as the monomer and plasma-treated PET fabrics as the substrates. The resulting polymer on the PET fabric surface was further chloridized to N-halamine structures. By oxidation of the chloride ions released from the N-halamine structures, antibiotic function for a broad spectrum of microorganisms was accomplished. Anti-Escherichia coli and anti-Staphylococcus aureus tests indicated that antimicrobial ratio greater than 80 % can be achieved by the surface modification process.
keywords: materials science vapor-phase assisted polymerization antimicrobial fabric N-halamines plasma treatment
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气相辅助聚合法制备抗菌性PET织物表面
摘要:本研究通过气相辅助接枝聚合3-丙烯基-5,5-二甲基乙内酰脲(ADMH)制备抗菌性PET织物。PET织物经等离子体处理获得可以引发ADMH聚合的活性表面,减压加热处理单体ADMH使之气化并通过气相扩散输送到PET织物活性表面。经比较聚合前后的织物表面ATR-IR谱图确认气相辅助接枝聚合在织物表面发生。同时扫描电镜观察织物及其改性产物的表面发现,等离子体处理纤维的表面粗糙度增加,而聚合后纤维表面有不同于织物原表面形貌的薄膜产生,这种薄膜经分析可归属于接枝聚合物。PET织物表面的聚合产物经氯化处理将所含仲胺结构转化为氯胺,并在水分子作用下可分解释放具有氧化作用的氯离子,由此抑制或杀灭大肠杆菌等常见病菌。抑菌测试结果表明,改性后的纤维织物对大肠杆菌和金黄色葡萄球菌具有良好的抗菌性,抑菌率可达80 % 以上。
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