TY - JOUR
T1 - Preparation and characterization of acid and solvent resistant polyimide ultrafiltration membrane
AU - Yang, Chengyu
AU - Xu, Weixing
AU - Nan, Yang
AU - Wang, Yiguang
AU - Gao, Congjie
AU - Hu, Yunxia
AU - Chen, Xianhong
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/7/31
Y1 - 2019/7/31
N2 - In this study, a new type of polyimide (PI) composite material was synthesized by a two-step method using 2,3,5,6-tetramethyl-1,4-phenylenediamine (TMPDA), 4,4′-methylenedianiline (MDA), and 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BTDA). The PI material was then used to prepare an ultrafiltration (UF) membrane by phase inversion method. The membrane showed a dense surface layer, a porous sublayer, and fully developed finger-like macrovoids at the bottom, which had excellent hydrophilicity and antifouling property. In the recovery experiments with a protein solution, the PI membrane displayed a satisfactory water flux recovery ratio of 90.03%. The PI membrane can operate stably in 1 mol L −1 hydrochloric acid solution, and the retention rate of BSA remains at 93%. In addition, the flux of the membrane is 325.60 L m −2 h −1 and the BSA retention rate the retention rate is still higher than 95% after soaking in various solvents for 7 days.
AB - In this study, a new type of polyimide (PI) composite material was synthesized by a two-step method using 2,3,5,6-tetramethyl-1,4-phenylenediamine (TMPDA), 4,4′-methylenedianiline (MDA), and 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BTDA). The PI material was then used to prepare an ultrafiltration (UF) membrane by phase inversion method. The membrane showed a dense surface layer, a porous sublayer, and fully developed finger-like macrovoids at the bottom, which had excellent hydrophilicity and antifouling property. In the recovery experiments with a protein solution, the PI membrane displayed a satisfactory water flux recovery ratio of 90.03%. The PI membrane can operate stably in 1 mol L −1 hydrochloric acid solution, and the retention rate of BSA remains at 93%. In addition, the flux of the membrane is 325.60 L m −2 h −1 and the BSA retention rate the retention rate is still higher than 95% after soaking in various solvents for 7 days.
KW - Acid resistance
KW - Antifouling
KW - Polyimide
KW - Solvent resistance
KW - Ultrafiltration membrane
UR - https://www.scopus.com/pages/publications/85063674000
U2 - 10.1016/j.apsusc.2019.03.226
DO - 10.1016/j.apsusc.2019.03.226
M3 - Article
AN - SCOPUS:85063674000
SN - 0169-4332
VL - 483
SP - 278
EP - 284
JO - Applied Surface Science
JF - Applied Surface Science
ER -