PE-LD/纳米SiO_2表面接枝高相对分子质量季铵盐抗菌性能的研究  

Research on Antimicrobial Material PE-LD/Nano-SiO_2 Grafting with High-molecular-weight Quaternary Ammonium Salt

作　　者：宋治福[1,2] 何力[1,2] 邱树毅[1,3] 佟会 吴远根 罗筑[1,2] 周丽[1,2] 何颖[1,2] 

机构地区：[1]贵州大学材料物理研究所 [2]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014 [3]贵州省发酵工程与生物重点实验室,贵州贵阳550003

出　　处：《中国塑料》2006年第8期84-86,共3页China Plastics

基　　金：国家"863计划"资助项目(2003AA33X080)

摘　　要：探讨了纳米SiO_2与高相对分子质量季铵盐表面接枝复合抗菌剂在PE-LD中的应用。结果表明,当抗菌剂添加量为基础树脂的3％(质量含量,下同)时,材料对大肠杆菌和金黄色葡萄球菌的抗菌率为99．99％,具有强抗菌效果。抗菌样品放置1a后,抗菌率仍为99．99％；将放置1a后的样品再经过加速老化15d后,抗菌率为97％左右,抗菌长效性好。A new antimicrobial agent has been studied. In this antimicrobial agent, the nano-SiO2 was combined with high-molecular-weight quaternary ammonium salt first, which was introduced into low density polyethylene （PE-LD） at a weight fraction of 3 %. The antimicrobial activity of the loaded resin achieved 99.99 %, and 99 % of which could be maintained after placed in the natural environment for more than one year. If rinsed in water for fifteen days, the antimicrobial activity reduced to 97 %.

关 键 词：纳米二氧化硅 高相对分子质量季铵盐 表面接枝 抗菌塑料 低密度聚乙烯 

分 类 号：TQ320.4[化学工程—合成树脂塑料工业]