聚多巴胺和溶菌酶共沉积制备超滤膜及其耐污染性能研究

Study of Anti-Fouling Performance of Ultrafiltration Membrane Prepared by Co-Deposition of Polydopamine and Lysozyme

采用聚多巴胺(PDA)和溶菌酶(Lys)在聚砜基膜上共沉积对其进行改性,制备出具有耐污染性能的超滤膜。通过傅里叶变换红外光谱仪(ATR-FTIR)、扫描电子显微镜(SEM)、原子力显微镜(AFM)、X射线光电子能谱仪(XPS)、接触角测量仪、固体表面Zeta电位仪等表征手段对膜的结构及表面性质进行了表征。通过研究多巴胺和溶菌酶的质量比对超滤膜耐污染性能的影响,探索出膜的最佳制备参数,最终制备出具有优异耐污染性能的溶菌酶超滤膜。

An ultrafiltration membrane with anti-fouling performance was prepared by co-deposition of polydopamine and lysozyme on the polysulfone membrane.The structure and surface properties of the membrane were characterized using Fourier transform infrared spectroscopy,scanning electron microscopy,atomic force microscope,X-ray photoelectron spectroscopy,contact-angle measurement,solid surface Zeta potential analyser,and other techniques.The influence of the mass ratio of dopamine to lysozyme on the anti-fouling performance of the ultrafiltration membrane was investigated.The optimum preparation parameters of the ultrafiltration membrane were explored.Finally,the lysozyme ultrafiltration membrane with excellent anti-fouling was prepared.