PPBES基膜厚度对复合膜水蒸气渗透性能的影响  

Effect of PPBES support membrane thickness on water vapor permeance of thin film composite membrane

作　　者：王丹慧[1] 张守海[1] 潘雨曦 王昭琪 刘泽元 徐树刚[1] 蹇锡高[1] WANG Danhui;ZHANG Shouhai;PAN Yuxi;WANG Zhaoqi;LIU Zeyuan;XU Shugang;JIAN Xigao(State Key Laboratory of Fine Chemicals,Liaoning High Performance Polymer Engineering Research Center,School of Chemical Engineering.Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学化工学院,辽宁省高性能树脂工程技术研究中心,辽宁省高分子科学与工程重点实验室,大连116024

出　　处：《膜科学与技术》2023年第1期37-44,共8页Membrane Science and Technology

基　　金：国家自然科学基金委创新研究群体项目(22021005);国家自然科学基金项目(21476038);大连市高层次人才创新支持计划项目(2019RD08);中央高校基本科研业务费资助项目(DUT20TD114)。

摘　　要：使用非溶剂致相分离(NIPS)法,以杂萘联苯共聚醚砜(PPBES)制备不同厚度的PPBES超滤基膜.随着基膜厚度从53μm增加到260μm,基膜接触角、平均孔径、孔隙率和截留率增大,水通量降低.随后,以磺化含侧苯基杂萘联苯聚醚酮(SPPEK-P)为选择层,采用涂覆法制备SPPEK-P/PPBES复合膜.研究基膜厚度对复合膜水蒸气渗透选择性的影响,并对复合膜进行扫描电子显微镜和红外光谱表征.结果表明,随着基膜厚度增大,复合膜水蒸气渗透速率从2244GPU降低到1033GPU,水蒸气/氮气的选择性从445降低到288.Copoly(phthalazinone biphenyl ether sulfone)(PPBES) ultrafiltration support membranes with different thicknesses were prepared through non-solvent induced phase separation(NIPS) method. When the thickness increased from 53 μm to 260 μm, the contact angle, mean pore diameter, porosity and rejection of membranes increased, while the water flux decreased. Then the thin film composite(TFC) membranes with sulfonated poly(phthalazinone ether ketone) containing pendant phenyl moieties(SPPEK-P) as the selective layer and PPBES as the support membrane were prepared by casting method. The TFC membranes with different thicknesses were characterized by SEM and FTIR. The effect of PPBES support membrane thickness on water vapor permeance and water/N2selectivity of TFC membranes were investigated. The results showed that when the thickness of membranes increased from 53 μm to 260 μm, water vapor permeance decreased from 2 244 GPU to 1 033 GPU, and water/N2selectivity decreased from 445 to 288.

关 键 词：磺化杂萘联苯聚醚酮 基膜 厚度 复合膜 水蒸气 

分 类 号：TQ028.2[化学工程]