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TitleHydrophobic/hydrophilic P(VDF-TrFE)/PHEA polymer blend membranes
Author(s)Tamaño-Machiavello, M. N.
Bracke, Benjamin
Costa, C. M.
Lanceros-Méndez, S.
Sabater i Serra, R.
Gómez Ribelles, J. L.
KeywordsPorous membrane
PHEA hydrogel
Issue date2016
JournalJournal of Polymer Science Part B: Polymer Physics
CitationTamano-Machiavello, M. N., Bracke, B., Costa, C. M., Lanceros-Mendez, S., Sabater i Serra, R., & Gomez Ribelles, J. L. (2016). Hydrophobic/hydrophilic P(VDF-TrFE)/PHEA polymer blend membranes. Journal of Polymer Science Part B-Polymer Physics, 54(6), 672-679. doi: 10.1002/polb.23959
Abstract(s)Polymer blend membranes have been obtained consisting of a hydrophilic and a hydrophobic polymers distributed in co-continuous phases. In order to obtain stable membranes in aqueous environments, the hydrophilic phase is formed by a poly(hydrohyethyl acrylate), PHEA, network while the hydrophobic phase is formed by poly(vinylidene fluoride-co-trifluoroethylene) P(VDF-TrFE). To obtain the composites, in a first stage, P(VDF-TrFE) is blended with poly(ethylene oxyde) (PEO), the latter used as sacrificial porogen. P(VDF-TrFE)/PEO blend membranes were prepared by solvent casting at 70° followed by cooling to room temperature. Then PEO is removed from the membrane by immersion in water obtaining a P(VDF-TrFE) porous membrane. After removing of the PEO polymer, a P(VDF-TrFE) membrane results in which pores are collapsed. Nevertheless the pores reopen when a mixture of hydroxethyl acrylate (HEA) monomer, ethyleneglycol dimethacrylate (as crosslinker) and ethanol (as diluent) is absorbed in the membrane and subsequent polymerization yields hybrid hydrophilic/hydrophobic membranes with controlled porosity. The membranes are thus suitable for lithium-ion battery separator membranes and/or biostable supports for cell culture in biomedical applications.
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Appears in Collections:CDF - FCD - Artigos/Papers (with refereeing)

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