Exploration of permeability and antifouling performance on modified cellulose acetate ultrafiltration membrane with cellulose nanocrystals
Exploration of permeability and antifouling performance on modified cellulose acetate ultrafiltration membrane with cellulose nanocrystals
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纤维素纳米晶改性醋酸纤维素超滤膜渗透性及防污性能探讨
DOI：
10.1016/j.carbpol.2017.06.064
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发表时间：
2017-10-15
影响因子：
11.2
通讯作者：
Yang, Fenglin
中科院分区：
文献类型：
--
作者：
Lv, Jinling;Zhang, Guoquan;Yang, Fenglin
采用浸没相转化法在二醋酸纤维素（CDA）基体中引入纤维素纳米晶（CNCs），以改善CNCs/CDA共混膜的过滤和渗透性能。研究了纳米碳纤维对膜的形貌、亲水性、渗透性和渗透性能的影响。结果表明，CNCs的引入可以通过优化膜的微观结构和改善膜的亲水性，有效地提高CNCs/CDA共混膜的渗透性能和渗透稳定性。在200 KPa下，CNCs/CDA共混膜的纯水通量达到173.8 L/m2·h，是CDA膜（7.2 L/m2·h）的24倍。与CDA膜相比，CNCs/CDA共混膜对牛血清白蛋白（BSA）的吸附量降低了约48%。此外，CNCs/CDA共混膜表现出更好的过滤性能，在三个污染循环后的通量恢复率（FRR）为89.5%，相比之下，CDA膜的59.7%。(C)2017爱思唯尔有限公司版权所有
Cellulose nanocrystals (CNCs) were introduced into cellulose diacetate (CDA) matrix via immerged phase inversion process, aiming to improve the filtration and antifouling performance of CNCs/CDA blending membrane. The effects of CNCs on membrane morphologies, hydrophilicity, permeability and antifouling property were investigated. Results showed that the incorporation of CNCs into CDA membrane could effectively enhance the permeability and antifouling property of CNCs/CDA blending membrane by optimizing membrane microstructure and improving membrane hydrophilicity. A high pure water flux of 173.8 L/m(2)h was achieved for the CNCs/CDA blending membrane at 200 KPa, which is 24 times that of the CDA membrane (7.2 L/m(2)h). The bovine serum albumin (BSA) adsorption amount of the CNCs/CDA blending membrane decreased about 48% compared to that of the CDA membrane. Additionally, the CNCs/CDA blending membrane exhibited better antifouling performance with the flux recovery ratio (FRR) of 89.5% after three fouling cycles, compared to 59.7% for the CDA membrane. (C) 2017 Elsevier Ltd. All rights reserved.