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Controlled preparation of porous polysulfone monolith via concentrated emulsion templating using an aminated polysulfone as surfactant
Author(s) -
Le Yechen,
Zhang Chen,
Li Hangquan,
Du Zhongjie,
Li Congju
Publication year - 2011
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21863
Subject(s) - polysulfone , emulsion , monolith , materials science , chemical engineering , porosity , pulmonary surfactant , phase inversion , chloroform , solvent , chromatography , polymer , composite material , organic chemistry , chemistry , membrane , biochemistry , catalysis , engineering
Abstract A methodology for preparing porous polysulfone (PSF) monolith via concentrated emulsion templating was proposed. A regular emulsion was first prepared using a solution of PSF in chloroform as the continuous phase and deionized water as the dispersed one. After the emulsion was formed, the liquid species in the emulsion was allowed to be evaporated. The solvent chloroform was first removed and the emulsion was transformed to a concentrated emulsion. Further removing the aqueous species, a porous PSF monolith was obtained. To keep the system stable throughout the process, an aminated polysulfone rather than conventional surfactants was employed. The effects of chloroform and water fractions, the nature and loading of the macromolecular surfactant, the evaporating temperature on the pore structure were investigated. Controlled porous structure with different pore size and porosity could be obtained through the method. POLYM. ENG. SCI., 2011. © 2010 Society of Plastics Engineers.