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通过多巴胺氧化聚合修饰及交替浸渍技术在聚丙烯微孔膜(MPPM)表面构建了Ag Cl修饰层。采用FTIR、XPS对构建过程膜表面的化学变化进行了分析;采用SEM-EDX对膜表面形态及Ag Cl分布进行了考察;通过表面水接触角及水通量的测定分析了膜的亲水性;采用平板活菌计数法评价了膜对大肠杆菌及金黄色葡萄球菌的抗菌能力。结果表明,制得的修饰膜具有强的抗菌能力和良好的表面亲水性,其对大肠杆菌和金黄色葡萄球菌的抗菌率分别达99.2%和100%。
The AgCl modified layer was formed on the surface of polypropylene microporous membrane (MPPM) by dopamine oxidative polymerization and alternating impregnation. The chemical changes of membrane surface were analyzed by FTIR and XPS. The surface morphology of membrane and the distribution of AgCl were investigated by SEM-EDX. The hydrophilicity of the membrane was analyzed by measuring the contact angle of surface water and water flux The antibacterial ability of the membrane against Escherichia coli and Staphylococcus aureus was evaluated by the viable plate counting method. The results showed that the prepared modified membrane has strong antibacterial ability and good surface hydrophilicity, and its antibacterial rate to Escherichia coli and Staphylococcus aureus was 99.2% and 100% respectively.