知识与财富的链接
通过紫外光引发表面共接枝的方法,在聚乙烯薄膜表面引入了具有杀菌功能和温度敏感共聚物,聚(甲基丙烯酰氧乙基苄基二甲基氯化铵-co-N-异丙基丙烯酰胺) (P(DMAE-BC-co-NIPAAm)).利用红外光谱（IR）和表面接触角（CA）对共接枝膜的化学结构与表面性能进行了表征.研究了因温度改变引起共接枝膜表面疏水性改变,而导致接枝膜对大肠杆菌(E.coli)吸附作用和菌体内膜破裂作用的改变.大肠杆菌被抗菌膜吸附后,在1 mol/L的NaCl浓盐溶液中只有部分被洗脱,在膜表面疏水情况下,可洗脱菌体比例降低.β-半乳糖苷酶活性测定结果表明,因温度升高而引起接枝膜表面疏水性增强时,会使抗菌膜对大肠杆菌菌体的破裂作用增强.
Surface contact disinfecting technique is a newly developed method for water sterilization.To prepare the antibacterial material having special ability and deeply study the antibacterial process and mechanism of surface contact disinfectant containing quaternary ammonium salts,the antibacterial and temperature responsive functional copolymer(poly(DMAE-BC-co-NIPAAm)) was introduced onto the surface of polyethylene(PE) films by UV-induced photo-grafting method.IR showed that the copolymer of DMAE-BC and NIPAA...
