Durably and intrinsically antibacterial polyamide 6(PA6)via backbone end-capping with high temperature-resistant imidazolium  

作　　者：Wenwen Wang Liting Yi Congang Fu Xiaoguang Li Ting Bai Zhong Yan Zhentan Lu Dong Wang 

机构地区：[1]Key Laboratory of Textile Fiber and Products(Wuhan Textile University),Ministry of Education,Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials&Application,Wuhan Textile University,Wuhan 430200,China [2]Hangzhou Juheshun New Materials Co.,Ltd,China

出　　处：《Journal of Materials Science & Technology》2024年第13期118-128,共11页材料科学技术（英文版）

基　　金：National Natural Science Foundation of China(Grant No.52273060);Science and Technology Research Project of the Educational Commission of Hubei Province(Grant No.D20221703)provide financial support.

摘　　要：The antibacterial polyamide 6(PA6)material has attracted great research interest due to its wide ap-plication in food packaging,biomedical fields,functional textiles,and other fields.However,it is still a challenge to prepare intrinsically antibacterial PA6 with highly efficient and durably antibacterial activity via polymerization.Herein,the antibacterial imidazolium ionic liquid of 3-carboxymethyl-1-decyl imida-zole chloride was designed and synthesized for adapting the polymerization and processing temperature of PA6.Then antibacterial PA6(PA6-IL)was synthesized through hydrolyzed ring-opening copolymeriza-tion with imidazolium at the end of the backbones.Compared to physical blending or post-modification methods,antibacterial agents as end-capping reagents of polymer backbones endowed PA6 with intrin-sic antibacterial activity.As expected,the obtained PA6-IL exhibited not just comparable physicochemical and mechanical properties to conventional PA6 but excellent antibacterial activity of low antibacterial time to 60 min and durability for 28 days.Additionally,the corresponding electrospun PA6-IL nanofi-brous membranes showed homogenous morphology and remarkable hydrophilicity of 7.7° as well as the high-efficient antibacterial activity.Melt-spun PA6-IL microfibers revealed a smooth surface as well as enhanced tensile strength and increased breaking elongation compared to those of conventional PA6.The PA6-IL microfibers also behaved with excellent antibacterial efficiency and durability.Accordingly,this work provides a feasible and straightforward strategy to prepare durably and intrinsically antibacterial PA6 materials especially PA6 fibers,which can be widely applied in the textiles field.

关 键 词：Antibacterial PA6 High temperature-resistant imidazolium High-efficiently antibacterial Durability Fibers 

分 类 号：TG665[金属学及工艺—金属切削加工及机床] TG139[一般工业技术—材料科学与工程]