文献类型：期刊文献

英文题名：High-flux, anti-fouling dendrimer grafted PAN membrane: Fabrication, performance and mechanisms

作者：Jiang, Luyao[1];Yun, Jianhua[1];Wang, Yixing[1];Yang, Hu[1];Xu, Zhi[1];Xu, Zhen-liang[1]

机构：[1]East China Univ Sci & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn Membrane Sci & Engn R&D L, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2020

卷号：596

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20195007834251);WOS:【SCI-EXPANDED(收录号:WOS:000512677400050)】；

语种：英文

外文关键词：PAMAM; PAN membrane; Antifouling; PBS; Surface energy

摘要：Polyamidoamine (PAMAM) dendrimers grafted Polyacrylonitrile (PAN) UF membrane (PAN-PAMAM) was prepared for the first time. The optimized PAN-PAMAM membrane showed both a high flux (420 L m(-2) h(-1). bar(-1)) and a good BSA rejection (99%). To improve its hydmphilicity, the membrane was further modified with ethanolamine (ETA) under different conditions. The results suggest that PAN-PAMAM membrane modified by ETA/NaOH has an improved antifouling property for sodium alginate (SA), humic acid (HA) and bovine serum albumin (BSA), the flux recover ratio (FRR) increased from 61% to above 91%. Moreover, the modified membrane shows a better antifouling property in phosphate-buffered saline (PBS) solution than in water solution. DLS results showed that BSA aggregate morphology are different in two solutions. AFM image and BSA adsorption revealed that PBS decreases the coverage and amount of BSA adsorbed on the membrane surface, leading to an improved antifouling property. Surface tension and XDLVO theory were further used to analyze the fouling process. It was found that ETA/NaOH modification greatly increases the Lewis acid-base interfacial interaction of membrane. However, after the adsorption of BSA, Lewis acid-base interaction decreases greatly, leading to the irreversible fouling of membrane.