Premium
Effect of Casting Solution on Morphology and Performance of PVDF Microfiltration Membranes
Author(s) -
Madaeni S. S.,
Taheri A. H.
Publication year - 2011
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201000177
Subject(s) - membrane , microfiltration , solvent , casting , chemical engineering , materials science , polymer , scanning electron microscope , ultrafiltration (renal) , solubility , morphology (biology) , permeation , hildebrand solubility parameter , polymer chemistry , chemistry , chromatography , composite material , organic chemistry , biochemistry , biology , engineering , genetics
The effects of preparation‐influencing parameters such as polymer concentration, thickness of casting solution, and type of solvent on morphology and performance of poly(vinylidene difluoride) (PVDF) microfiltration membranes for the treatment of emulsified oily wastewater were investigated. Flat‐sheet membranes were prepared from a casting solution of polymer and additive in various solvents by immersing the prepared films in nonsolvent‐containing mixtures of water and 2‐propanol. The membranes were characterized using scanning electron microscopy. Increasing the polymer concentration and membrane thickness significantly affected the pore size, leading to permeate flux decrease. An attempt was made to correlate the effect of the solvent on membrane morphology and performance employing solubility parameters between solvent and nonsolvent).