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Sulfonated polyphenylsulfone asymmetric membranes: Effect of coagulation bath (acetic acid‐NaHCO 3 /isopropanol) on morphology and antifouling properties
Author(s) -
YamCervantes M. A.,
SantiagoGarcía J. L.,
LoríaBastarrachea M. I.,
DuarteAranda S.,
Alberto RuizTreviño F.,
AguilarVega M.
Publication year - 2017
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.44502
Subject(s) - membrane , phase inversion , ultrafiltration (renal) , chemical engineering , acetic acid , polymer chemistry , biofouling , scanning electron microscope , coagulation , chemistry , sulfonic acid , materials science , chromatography , organic chemistry , composite material , psychology , biochemistry , psychiatry , engineering
Sulfonated polyphenylsulfone porous asymmetric membranes, S‐PPSU with different sulfonation degrees, 21, 33, 50 wt %, were prepared by phase inversion. Two different coagulation baths were explored for asymmetric membrane preparation: acetone/isopropanol and acetic acid (AA)‐NaHCO 3 /isopropanol. The latter bath allows better morphology control for the nucleation and pore formation of the membrane. Scanning electron microscopy of membranes shows that pore interconnectivity is improved, when the mixture of AA‐NaHCO 3 /isopropanol was used for asymmetric S‐PPSU ultrafiltration membranes preparation. S‐PPSU asymmetric membranes show an increasing hydrophilicity with increasing sulfonation degree. Asymmetric membrane antifouling properties improve as the concentration of sulfonic groups increases in the membrane showing twice the flux recovery ratio and lower BSA protein absorption in static and dynamic flux tests. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44502.