文献类型：期刊文献

英文题名：How to understand the effects of heat curing conditions on the morphology and performance of polypiperazine-amide NF membrane

作者：Zhan, Zi-Ming[1];Xu, Zhen-Liang[1];Zhu, Ka-Ke[1];Tang, Yong-Jian[1]

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

年份：2020

卷号：597

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20194807741751);WOS:【SCI-EXPANDED(收录号:WOS:000512684200025)】；

基金：The financial support was provided by the National Natural Science Foundation of China (Grant No: 21808060) for this work and the Fundamental Research Funds for the Central Universities (WA1814009).

语种：英文

外文关键词：Nanofiltration membrane preparation; Heat curing; Morphology; Polyamide; Interfacial polymerization

摘要：In this study, the impacts of heat curing conditions on the morphology and permeability of polyamide nanofiltration (NF) membranes were comprehensively investigated. The surface chemical composition, morphology, charge property, hydrophilicity and NF performance of the resulting membranes were studied. In order to preserve the instantaneous polyamide layer morphology, freeze drying process was employed after heat curing. Results showed that the surface roughness of the polyamide selective layer increased first and then decreased with curing time. The tunable morphology of polyamide NF membranes can be acquired by adjusting the curing temperature and time. The nascent membrane without heat curing exhibited excellent pure water permeability of 16.7 L m(-2) h(-1) bar(-1) and maintained Na2SO4 rejection of 97.4%. Increasing the curing time, the permeability of the NF membranes was greatly diminished. This work provided novel viewpoint about the effects of heat curing on morphology and permeability for high-performance polyamide NF membrane.