An acid resistant nanofiltration membrane prepared using a novel triamine monomer by interfacial polymerization
A new monomer of triamine incorporating triazine ring, 1,3,5-(tris-piperazine)-triazine (TPT), was synthesized to fabricate nanofiltrationmembranesvia interracial polymerization with Trimesoyl chloride (TMC) onpolysulfone(PSf) supporting membrane.The TPT-TMC/PSf membranes were characterized for compositional analysis byATR-IR spectroscopy, surface and cross morphologies by SEM, surface charge by zeta potential measurement.Results revealed that TPT-TMC/PSf composite membraneobtains thinner membrane thickness, smoother andmore negatively charged surface than the conventional polypiperazine amide nanofiltration membrane.Under theoptimum conditions, the permeation properties of the membranes were evaluated by the rejection andwater flux of different kinds of salts (NaCl, Na2SO4, MgCl2, MgSO4) and the TPT-TMC/PSf compositemembrane exhibits excellent salt rejections to dianions”Na2SO4 (99.6 %) > MgSO4(98.7%) >MgCl2 (68.6%)>NaCl(40.5%)”, which is typical for negatively charged membrane.The acid resistance of the membranes was studied by the evaluation of membraneperformance before and aftersulphuric acid exposure.The TPT-TMC/Psfcompositemembrane exhibited considerable acid stability which is attributed to the presence ofthe triazine ring.
s-triazine ring acid stability interfacial polymerization polyamide
ZENG Yanjun ZHANG Lin
Key Laboratory of Biomass Chemical Engineering of MOE, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
国内会议
北京
英文
88-93
2016-10-01（万方平台首次上网日期，不代表论文的发表时间）