Dopamine Composite Nanofiltration Membrane with High Solvent Resistance and Stability

被引：0
|
作者：
Gao Y. [1 ]
Wu L. [1 ]
Gai J. [1 ]
机构：
[1] Polymer Research Institute of Sichuan University, State Key Laboratory of Polymer Materials Engineering, Chengdu
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2019年 / 35卷 / 05期
关键词：
Delamination; Dopamine; Interfacial polymerization; Nanofiltration; Stability;
D O I：
10.16865/j.cnki.1000-7555.2019.0148
中图分类号：
学科分类号：
摘要：
Composite nanofiltration (NF) membranes tend to delaminate and have a poor stability while applied to harsh environments due to the multi-layered structure. In this study, dopamine (DOPA) was employed to prepare NF membranes via interfacial polymerization. The separation performance and stability of NF membranes were investigated, respectively. After soaking in ethanol solvent for 12 d of both DOPA- trimesoyl chloride (TMC) NF membranes and DOPA/ piperazine (PIP)-TMC NF membranes, the rejection rate of Congo red is only decreases by 1.76% and 1.22% (the original of 99.86% and 99.92%), respectively. Moreover, the separation performances of both DOPA-TMC NF and DOPA/PIP-TMC NF membranes are still excellent after soaking in the active chlorine solution for 240 h (12 g•L-1•h). The NF membranes exhibit a long-term structural stability in ethanol and a considerable chemical stability in sodium hypochlorite solution. In particular, no delamination is observed in the above experiments. © 2019, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：164 / 170
页数：6
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