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Poly[(vinylidene fluoride)‐ co ‐trifluoroethylene] Membranes Obtained by Isothermal Crystallization from Solution
Author(s) -
Ferreira Armando,
Silva Jaime,
Sencadas Vitor,
Ribelles José Luis Gómez,
LancerosMéndez S.
Publication year - 2010
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201000020
Subject(s) - materials science , membrane , copolymer , crystallization , fluoride , chemical engineering , evaporation , polymer chemistry , spinodal decomposition , phase (matter) , dimethylformamide , solvent , isothermal process , spin coating , polymer , coating , composite material , organic chemistry , inorganic chemistry , thermodynamics , chemistry , physics , engineering , biochemistry
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 µm, 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.