Nano-porous polyethersulfone (PES) membranes modified by acrylic acid (AA) and 2-hydroxyethylmethacrylate (HEMA) as additives in the gelation media
Nano-porous polyethersulfone (PES) membranes modified by acrylic acid (AA) and 2-hydroxyethylmethacrylate (HEMA) as additives in the gelation media
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DOI：
10.1016/j.memsci.2010.08.046
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发表时间：
2010-11-15
影响因子：
9.5
通讯作者：
Mansourpanah, Yaghoub
中科院分区：
文献类型：
--
作者：
Rahimpour, Ahmad;Madaeni, Sayed Siavash;Mansourpanah, Yaghoub
研究了在凝胶介质中加入丙烯酸（AA）和甲基丙烯酸羟乙酯（HEMA）对聚醚砜（PES）膜结构和渗透性能的影响。以二甲基乙酰胺（DMAC）为溶剂，聚醚砜（PES）和聚乙烯吡咯烷酮（PVP）为原料，采用相转化法制备了膜。用扫描电子显微镜（SEM）和原子力显微镜（AFM）对膜的表面和亚层形貌进行了分析。膜的性能进行了评价，在纯水渗透，非脱脂牛奶水渗透，牛奶蛋白截留率，污染分析和溶质分离的聚乙二醇（PEG）溶液的各种分子量。形态学研究表明，在凝胶介质中AA和HEMA的存在下，表面和亚层的平均孔径减小。同时，表面孔隙率增加。平均孔径范围为5.2至11.3 nm时，从溶质传输数据计算。通过增加凝胶介质中AA和HEMA的含量，提高了膜的纯水通量、牛奶水渗透率和蛋白质截留率。膜污染分析表明，膜过滤阻力降低。总之，在凝胶介质中加入AA和HEMA可以改善PES膜的耐水性。(C)2010 Elsevier B.V.保留所有权利。
In this study, the effects of addition of acrylic acid (AA) and 2-hydroxyethylmethacrylate (HEMA) in the gelation media on structure and permeation properties of polyethersulfone (PES) membranes were investigated. The membranes were prepared by phase inversion method using PES and polyvinylpyrrolidone (PVP) in dimethylacetamide (DMAC) as solvent. The surface and sub-layer morphologies of the obtained membranes were analyzed by scanning electron microscope (SEM) and atomic force microscope (AFM). The membrane performance was evaluated in terms of pure water permeation, non-skim milk water permeation, milk protein rejection, fouling analysis and solute separation of polyethylene glycol (PEG) solution of various molecular weights. The morphological studies showed that the average pore sizes of the surface and sub-layer were reduced at the presence of AA and HEMA in the gelation media. Meanwhile, the surface porosity was increased. The mean pore size ranged from 5.2 to 11.3 nm when calculated from the solute transport data. The pure water flux, milk water permeation and protein rejection of the membranes were improved by increasing the AA and HEMA contents in the gelation media. The fouling analysis indicated that the membrane resistance against filtration was decreased. In conclusion the antifouling properties of PES membranes were improved by addition of AA and HEMA in the gelation media. (C) 2010 Elsevier B.V. All rights reserved.