卤胺类单体接枝汉麻纤维及抗菌性能研究

Antibacterial treatment of hemp fiber by grafting N-halamine monomer

卤胺类抗菌纺织品具有广谱杀菌、高效杀菌、可再生性、环境友好等特点。以过硫酸钠为引发剂,研究了甲基丙烯酰胺(MAM)在汉麻纤维上的接枝共聚反应及整理后纤维的抗菌效果。得到接枝改性汉麻纤维的最适工艺条件:引发剂和MAM单体的浓度分别为3g/L和10g/L,反应时间为3h和反应温度为80℃,最适工艺含氯量为0.37%。利用FT-IR、SEM等对接枝后汉麻纤维的结构与性能进行表征。结果表明:在自由基引发下汉麻纤维可有效地接枝共聚MAM。根据AATCC100—2004标准,抗菌整理后的汉麻纤维可以分别在5和10min内将接种的约6log的大肠杆菌和金黄色葡萄球菌全部杀死,抗菌效果优异。

N-halamines are the most promising candidates to prepare antimicrobial textiles due to their broad-spectrum antibacterial activity,high efficacy and environmental friendly.In addition,their antibacterial properties are rechargeable.The graft copolymerization and antibacterial property of methacrylamide（MAM）on hemp fibers with sodium persulfate as the initiator were studied.The optimum condition of graft copolymerization was obtained：initiator concentration3g/L,monomer concentration 10g/L,reaction time 3h,reaction temperature 80℃.The active chlorine from the optimum process was 0.37%.The morphology and property of grafted hemp fibers were characterized by FT-IR and SEM,etc.The results confirmed that methacrylamide was grafted onto hemp fibers by radical-initiated polymerization.According to the AATCC100—2004,the fibers can inactivate 100% of the Staphylococcus aureus and E.coli O157∶H7with a contact time of 5min and 10 min,respectively,and exhibited good antibacterial property.