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首页> 外文期刊>RSC Advances >Studies of PET nonwovens modified by novel antimicrobials configured with both N-halamine and dual quaternary ammonium with different alkyl chain length
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Studies of PET nonwovens modified by novel antimicrobials configured with both N-halamine and dual quaternary ammonium with different alkyl chain length

机译：用不同烷基链长度构成的新型抗微生物改性宠物非织造型研究，具有不同烷基链长度的二卤素和双季铵

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This work describes the synthesis of novel antimicrobial agents consisting of N -halamine and dual quaternary ammonium with different alkyl chain lengths and their antimicrobial applications for PET nonwovens. The antimicrobial agents were grafted onto PET nonwovens via esterification with a crosslinker, 1,2,3,4-butanetetracarboxylic acid (BTCA). The cyclic amide structure in the antimicrobial agents could be easily converted to N -halamine after immersion in a diluted chlorine bleach solution. Variations in surface chemical composition of the modified PET nonwovens were examined by XPS. Antimicrobial activities of the nonwovens/fabrics were tested against S. aureus (Gram-positive) and E. coli (Gram-negative) strains. Systematic investigation showed the antibacterial activities were dependent upon the alkyl chain length. The synergism of N -halamine and dual quaternary ammonium could lead to significant antimicrobial activity with inactivation of up to 90% of S. aureus and E. coli after 10 minute contact. This work suggested that the novel composite biocides with N -halamine and dual quaternary ammonium groups and the associated surface modification methods could be of use for further developing antimicrobial nonwoven applications.
机译：该作品描述了由具有不同烷基链长度的N-卤胺和双季铵组成的新型抗微生物剂的合成及其对PET非织造织物的抗微生物应用。通过用交联剂，1,2,3,4-丁丁羧酸（BTCA）通过酯化将抗微生物剂接枝到PET非织造织物上。在浸入稀释的氯漂白溶液中，抗微生物剂中的环状酰胺结构可以容易地转化为N-卤胺。通过XPS检查改性宠物非织造织物的表面化学成分的变化。非织造织物/织物的抗菌活性针对金黄色葡萄球菌（革兰氏阳性）和大肠杆菌（革兰氏阴性）菌株进行了测试。系统调查显示抗菌活性依赖于烷基链长度。 N-羟胺和双季铵的协同作用可能导致显着的抗微生物活性，其在10分钟接触后灭活高达90％的S.UUREUS和大肠杆菌。这项工作表明，具有N-卤胺和双季铵基团的新型复合杀生物剂和相关表面改性方法可以用于进一步发展抗微生物非织造应用。

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