Dasgupta, D. ; Guenet, J. M. ; Nandi, A. K. (2008) Thermoreversible poly(vinylidene fluoride) gels: a precursor to multiporous polymeric materials Macromolecular Symposia, 273 (1). pp. 73-79. ISSN 1022-1360
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/masy.20...
Related URL: http://dx.doi.org/10.1002/masy.200851310
Abstract
The thermodynamics of gelation of poly(vinylidene fluoride)(PVF2) 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 PVF2 in diethyl azelate is also exploited to create multiporous polymer foam. Porosity measurements with the dried PVF2 gels using Mercury intrusion porosimetry and nitrogen sorption ensure the presence of macro and mesopores in the same matrix although the mesoporosity in dried PVF2-CP gels strongly depend on method of drying.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons, Inc. |
| Keywords: | Crystalline Phase; Gelation; Mercury Intrusion Porosimetry; Mesoporosity; Polymer-solvent Compound |
| ID Code: | 24118 |
| Deposited On: | 29 Nov 2010 10:24 |
| Last Modified: | 08 Jun 2011 06:45 |
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