Poly[(vinylidene fluoride)-co-trifluoroethylene] Membranes Obtained by Isothermal Crystallization from Solution

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Macromolecular Materials and Engineering, ISSN: 1438-7492, Vol: 295, Issue: 6, Page: 523-528

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Armando Ferreira; Jaime Silva; Vitor Sencadas; José Luis Gómez Ribelles; S. Lanceros-Méndez
Chemical Engineering; Chemistry; Materials Science; solution; fluoride; co; poly; trifluoroethylene; vinylidene; membranes; obtained; isothermal; crystallization; Engineering; Science and Technology Studies
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Electroactive macroporous poly[(vinylidene fluoride)-co-trifluoroethylene] membranes have been produced by solvent evaporation at room temperature, starting with a diluted solution of the copolymer in dimethylformamide. The pore architecture consists of interconnected spherical pores. This architecture is independent of the membrane thickness. The thickness of the membranes ranges from a few to several hundred mm, using spin coating and evaporation in static conditions, respectively. The pore structure is explained by a spinodal decomposition of the liquid/liquid phase separation and crystallization in the copolymer-rich phase.© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.