季铵盐型抗菌玻璃纤维膜的抗菌性能研究

Study on the antibacterial property of glass fiber membrane modified with quaternary ammonium salt

以玻璃纤维膜为基体,通过等离子体表面处理和化学接枝季铵盐,制备出一种季铵盐型抗菌玻璃纤维膜材料。采用红外光谱、X射线光电子能谱、热重和Zeta电位等表征手段研究了改性前后玻璃纤维膜结构与性能的变化,考察了改性玻璃纤维膜的抗菌性能。结果表明:季铵盐分子成功接枝到材料表面。抗菌测试结果表明:改性玻璃纤维膜对大肠杆菌有明显的抗菌效果,接触20min抗菌率达到98.5%,经通水过滤500L/m^2后该材料的抗菌率仍保持在95%以上。

A novel antibacterial membrane was prepared by plasma treatment and chemical grafting of quaternary ammonium on glass fiber membrane.FT-IR,XPS,TG and Zeta potential techniques were employed to characterize the structures and properties of the samples.FT-IR,XPS and TG indicated that quaternary ammonium was attached onto the surface of the samples successfully.Zeta potential results showed that water dispersion solution of modified glass fiber membrane had positive charges,while non-modified glass fiber membrane had negative charges.The results of antibacterial test showed that the modified glass fiber membrane had obvious antibacterial effect on E.coli.The antibacterial rate reached 98.5%after contact with 20min,and the antibacterial rate of the membrane remained above 95%after running 500L/m2.