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首页> 外文期刊>Biomacromolecules >Grafting of Poly[2-(tert-butylamino)ethyl methacrylate] onto Polypropylene by Reactive Blending and Antibacterial Activity of the Copolymer
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Grafting of Poly[2-(tert-butylamino)ethyl methacrylate] onto Polypropylene by Reactive Blending and Antibacterial Activity of the Copolymer

机译：通过反应共混和共聚物的抗菌活性将聚[甲基丙烯酸2-（叔丁基氨基）乙酯]接枝到聚丙烯上

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摘要

To combine low cost, good mechanical properties, and antibacterial activity in one material, a nonquaternized polymeric biocide, i.e., poly[2-(tert-butylamino)ethyl methacrylate] (PTBAEMA), was dispersed within a commodity plastic, i.e., polypropylene (PP). The high immiscibility of the two polymers was tackled by reactive compatibilization and thus by reaction of commercially available maleic anhydride grafted polypropylene with primary amine-end-capped PTBAEMA. This reactive polymethacrylate was synthesized by atom-transfer radical polymerization with an azide-containing initiator. The azide end group was converted into a primary amine by the Huisgen [3 + 2] cycloaddition of propargylamine. The accordingly formed PP-g-PTBAEMA copolymer was melt dispersed within neat PP and processed as fibers, whose antimicrobial properties were assessed by the viable cell counting method against Escherichia coli. The antibacterial activity was long-lasting as a result of the anchoring of the PTBAEMA chains onto PP, which prevented them from being released from the surface of the fibers.
机译：为了在一种材料中兼具低成本，良好的机械性能和抗菌活性，将一种非季铵化的高分子杀生物剂，即聚[2-（叔丁基氨基）甲基丙烯酸甲酯]（PTBAEMA）分散在一种商品塑料中，即聚丙烯（ PP）。两种聚合物的高度不溶混性通过反应性相容性解决，因此可通过市售的马来酸酐接枝聚丙烯与伯胺端基封端的PTBAEMA反应来解决。该反应性聚甲基丙烯酸酯是通过使用含叠氮化物的引发剂进行原子转移自由基聚合而合成的。叠氮基端基通过炔丙基胺的Huisgen [3 + 2]环加成反应转化为伯胺。将由此形成的PP-g-PTBAEMA共聚物熔融分散在纯PP内并加工成纤维，通过针对大肠杆菌的活细胞计数方法评估其抗菌性能。由于PTBAEMA链锚固在PP上，因此抗菌活性持久，可防止它们从纤维表面释放出来。

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