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Thermoreversible Poly(vinylidene fluoride) Gels: A Precursor to Multiporous Polymeric Materials
Author(s) -
Dasgupta D.,
Guenet J. M.,
Nandi A. K.
Publication year - 2008
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200851310
Subject(s) - materials science , polymer , chemical engineering , solvent , sorption , fluoride , porosity , polymer chemistry , mesoporous material , organic chemistry , composite material , adsorption , chemistry , inorganic chemistry , engineering , catalysis
Summary: The thermodynamics of gelation of poly(vinylidene fluoride)(PVF 2 ) with camphor (CP) and ethylene carbonate (EC) suggest polymer‐solvent compound formation. The presence of solvent molecules in the polymer crystalline phase of the gel is accordingly shown by wide angle X‐ray diffraction studies. The dried gels exhibit porous network morphology. Thermoreversible gel of PVF 2 in diethyl azelate is also exploited to create multiporous polymer foam. Porosity measurements with the dried PVF 2 gels using Mercury intrusion porosimetry and nitrogen sorption ensure the presence of macro and mesopores in the same matrix although the mesoporosity in dried PVF 2 ‐CP gels strongly depend on method of drying.