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Effects of operation conditions, solvent and gelation bath on morphology and performance of PPESK asymmetric ultrafiltration membrane
Author(s) -
Sun Weina,
Li Lei,
Chen Cuixian,
Li Jiding
Publication year - 2008
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.27318
Subject(s) - membrane , phase inversion , ultrafiltration (renal) , solvent , evaporation , chemical engineering , membrane structure , materials science , polymer chemistry , optical microscope , polymer , morphology (biology) , chemistry , chromatography , composite material , scanning electron microscope , organic chemistry , thermodynamics , biochemistry , physics , engineering , genetics , biology
The effect of gelation temperature, evaporation time, solvent and gelation bath on the structure and performance of poly(phthalazinone ether sulfone ketone) (PPESK) asymmetric ultrafiltration membrane via phase inversion are investigated; the relationship between gelation thickness of dope solutions ( X ) and time for several polymer solutions with different solvents and gelation bath by online optical microscope–CCD camera experimental system (OM–CC system) are obtained. The results show that gelation temperature has much stronger influence on aperture opening ratio of membrane surface ( AOR ) and average diameter of membrane surface ( AD ) than evaporation time, whereas evaporation time has greater effect on the structure factor of membrane cross‐section ( S ). Bovine serum albumin rejection ( R ) is mainly determined by surface structure; however, pure water flux ( J ) is controlled not only by the structure of surface and cross‐section, but also the connectivity of the pores. PPESK membranes with fine performance can be fabricated under appropriate gelation temperature and evaporation time. In addition, the membrane structure and performance vary widely when various solvents and gelation bath are employed. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008