摘要
为探究Ag纳米粒子在膜中的抗微生物污染性能,通过多巴胺(PDA)在聚苯硫醚(PPS)膜表面自聚合,形成PDA包覆的PPS膜(PPS@PDA),在碱性条件下将PPS@PDA膜浸泡在不同浓度的AgNO3溶液中,制备PPS@PDA/Ag膜;采用FT-IR、XRD、XPS、SEM等方法对改性PPS膜的结构和性能进行表征,并研究负载Ag纳米粒子的PPS膜的抗微生物污染性能.结果表明:膜的亲水性大大提升;改性后Ag纳米粒子成功地在膜的表面及内部形成;随着Ag纳米粒子浓度的增加,改性膜的抗微生物污染性能逐渐增强,对于大肠杆菌产生了(5±1)mm的抑菌圈,而对于金黄葡萄球菌产生了(3±1)mm的抑菌圈,对大肠杆菌的抗菌效果更好.
In order to explore the antibiofouling properties of Ag nanoparticles in the membrane, PDA was self-polymerized on the surface of PPS membrane by in-situ polymerization to form PPS@PDA membrane. And the PPS@PDA membrane was immersed in AgNO3 solution with different concentrations under alkaline conditions to prepare the PPS@PDA/Ag membrane. The structure and property of the modified PPS membrane were characterized by FT-IR, XRD, XPS and SEM, etc. The antibiofouling properties of PPS membrane loaded Ag nanoparticles were studied. The results showed that Ag nanoparticles were successfully formed in the membrane and on the membrane surface, and the hydrophilicity of PPS@PDA/Ag membrane was obviously improved. The antibiofouling performance of modified membranes was also gradually increased with the increase of concentration of Ag nanoparticles. The modified membrane exhibited better antibacterial effect for E. coli than that for S. aureus. For E. coli, the modified membrane produced (5±1) mm bacteriostasis, and for S. aureus, the modified membrane produced (3±1) mm bacteriostasis.
作者
李振环
王超
程博闻
LI Zhen-huan;WANG Chao;CHENG Bo-wen(School of Material Science and Engineering,Tianjin Polytechnic University,Tianjin 300387,China;State Key Laboratory of Separation Membranes and Membrane Processes,Tianjin Polytechnic University,Tianjin 300387,China)
出处
《天津工业大学学报》
CAS
北大核心
2018年第6期19-23,共5页
Journal of Tiangong University
基金
国家自然科学基金资助项目(21676202
21376177)
