Porous polymeric membranes by bicontinuous microemulsion polymerization: effect of anionic and cationic surfactants
作者： T.H. Chieng , L.M. Gan , W.K. Teot , K.L. Pey
DOI: 10.1016/S0032-3861(96)00452-1
关键词: Polymer chemistry 、 Membrane 、 Concentration effect 、 Microemulsion 、 Cationic polymerization 、 Polymerization 、 Chemical engineering 、 Pulmonary surfactant 、 Chemistry 、 Sodium dodecyl sulfate 、 Monolayer
摘要: Porous polymeric membranes made by polymerizing bicontinuous microemulsions stabilized with anionic sodium dodecyl sulfate (SDS) and cationic dodecyltrimethylammonium bromide (DTAB) as surface-active agents were investigated. The morphology, swelling permeability characteristics of the found to be highly dependent on surfactant concentration in both SDS DTAB systems. pore size system decreases increasing concentration, while reverse trend was observed for until its exceeded 10 wt%. membrane prepared using have a larger range 100 nm 3 μm compared that DTAB, which is less than nm. In addition, variation led continuous change shape particle aggregates it appeared remain globular form system. remarkable differences between are discussed terms their different monolayer flexibilities.
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