Enhanced permeation performance of cellulose acetate ultrafiltration membrane by incorporation of Pluronic F127
Enhanced permeation performance of cellulose acetate ultrafiltration membrane by incorporation of Pluronic F127
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DOI：
10.1016/j.memsci.2007.02.011
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发表时间：
2007-05-15
影响因子：
9.5
通讯作者：
Jiang, Zhongyi
中科院分区：
文献类型：
--
作者：
Lv, Cailing;Su, Yanlei;Jiang, Zhongyi
以Pluronic F127嵌段共聚物为成孔剂和表面改性剂，制备了改性醋酸纤维素超滤膜。随着铸膜液中Pluronic F127含量的增加，改性CA膜的含水率增加。扫描电子显微镜(SEM)照片表明，与CA对照膜相比，改性的CA膜具有更薄的顶层和更大的孔容。静态水接触角随Pluronic F1 27含量的增加而减小，表明表面亲水性增加。傅立叶变换红外光谱仪(FT-IR)分析结果证实，Pluronic F127大部分已从改性CA膜中被淋洗出来。超滤实验表明，Pluronic Fl27的加入影响了膜的渗透性能，所有改性CA膜的水通量和牛血清白蛋白(BSA)截留率均高于CA对照膜。(C)2007 Elsevier B.V.保留所有权利。
Modified cellulose acetate (CA) ultrafiltration membranes were prepared using Pluronic F127 block copolymer as both pore-forming agent and surface modification agent. The watercontent of modified CA membranes increased with an increase of Pluronic F127 content in the casting solutions. The scanning electron microscopy (SEM) photographs showed that the modified CA membranes had thinner top layer and bigger pore volume in the porous sub-layer compared to the CA control membrane. The decrease of static water contact angle with an increase in Pluronic F1 27 content indicated an increase of surface hydrophilicity. The results of Fourier transform infrared spectrometer (FT-IR) analysis confirmed that most of Pluronic F127 has been leached out from the modified CA membranes. The ultrafiltration experiments revealed that the addition of Pluronic Fl 27 influenced the permeation performance of the membranes, all the modified CA membranes exhibited higher water flux and higher bovine serum albumin (BSA) rejection ratios than those of the CA control membrane. (C) 2007 Elsevier B.V. All rights reserved.