Abstract

An N-halamine precursor 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)ethyl methacrylate (SCMHBMA) was synthesized and grafted on cotton fabrics via atom transfer radical polymerization for antibacterial function after chlorination. The preparation and chlorinated cotton fabrics (Cotton-g-PSMA-Cl) were characterized with FTIR, XPS, SEM, and TGA. The properties of prepared Cotton-g-PSMA-Cl, including thermal property, antibacterial efficiency, durability, and stability, were systematically evaluated. The results showed that these chlorinated Cotton-g-PSMA-Cl fabrics possessed excellent antibacterial activity against E. coli. and S. aureus. After 10 washing cycles and 60 days of routine storage, active chlorine concentrations (Cl⁺%) were reduced only 22% and 18%, respectively, and the reduced Cl⁺% effectively reverted by simple rechlorination. This new N-halamine antibacterial cotton composite with superior antibacterial properties exhibited potential for future application in the long-term antibacterial field.

Graphic abstract

中文翻译：

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N-卤胺基团通过原子转移自由基聚合接枝抗菌棉织物

摘要

合成了N-卤胺前体 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)ethyl methacrylate (SCHMHBMA) 并通过原子转移自由基聚合接枝到棉织物上用于抗菌氯化后起作用。制备和氯化棉织物 (Cotton-g-PSMA-Cl) 用 FTIR、XPS、SEM 和 TGA 进行了表征。系统评价了制备的 Cotton-g-PSMA-Cl 的性能，包括热性能、抗菌效率、耐久性和稳定性。结果表明，这些氯化 Cotton-g-PSMA-Cl 织物对大肠杆菌具有优异的抗菌活性。和金黄色葡萄球菌。经过 10 次洗涤循环和 60 天的常规储存后，活性氯浓度 (Cl ⁺%) 分别仅减少了 22% 和 18%，并且通过简单的再氯化有效地恢复了减少的 Cl ⁺ %。这种新型N-卤胺抗菌棉复合材料具有优异的抗菌性能，在未来长期抗菌领域的应用潜力巨大。

图形摘要