文献类型：期刊文献

英文题名：Novel Insight on the Effect of the Monomer Concentration on thePolypiperazine-Amide Nanofiltration Membrane

作者：Zhu, Qiu-Yu[1];Wu, Liu-Kun[1];Li, Lan-Qian[1];Zhuang, Li-Wei[1];Xue, Shuang-Mei[2];Xu, Zhen-Liang[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, Shanghai 200237, Peoples R China;[2]Shenzhen Univ, Inst Adv Study, Shenzhen 518060, Peoples R China

年份：2022

卷号：61

期号：17

起止页码：5843

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20221712036977);WOS:【SCI-EXPANDED(收录号:WOS:000798993000016)】；

基金：The authors are thankful for the funding support from the National Natural Science Foundation of China (21808060).

语种：英文

外文关键词：Water filtration - Physicochemical properties - Pore size - Amides - Monomers - Nanofiltration

摘要：The monomer concentration is a key factor affectingthe diffusion rate and reaction rate of the monomers anddetermines the physicochemical property of polyamide nano-filtration membranes. However, the mechanism of the monomerconcentration effect on the polyamide nanofiltration membraneremains unclear. The properties of nascent membranes fabricatedwith different monomer concentrations with afixed ratio presentedcompletely new results in the absence of heat treatment. The resultsreveal that the polyamide layer thickness increases linearly with themonomer concentration when the concentration is high. Thenanofiltration membranes prepared at a low concentration have alarger pore size and a lower cross-linking degree, which contributedto high water permeability. The optimal membrane presented ahigh pure water permeability of 36.1 L h-1m-2bar-1, with theNa2SO4rejection maintained at 98.4%. This work provides a novelinsight into the relationship between the properties of thenanofiltration membrane and monomer concentration.