Dasgupta, D. ; Manna, Swarup ; Malik, Sudip ; Rochas, Cyrille ; Guenet, Jean Michel ; Nandi, A. K. (2005) Thermoreversible gelation of poly(vinylidene fluoride) - camphor system Macromolecular Symposia, 222 (1). pp. 175-180. 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.200550422
Abstract
Poly (vinylidene fluoride) (PVF2) produces thermoreversible gel in camphor when quenched to 25°C from the melt under sealed condition. The SEM micrograph of dried PVF2/camphor gel (WPVF2= 0.25) indicates presence of fibrillar network structure and the gels at different composition shows reversible first order phase transition. The phase diagram of the gel suggest the formation of a polymer- solvent complex. The melting enthalpy gives a stoichiometric composition of the complex at WPVF2= 0.25. This corresponds to a molar ratio of PVF2 monomer/camphor ≈ 4/5. Temperature-dependent synchroton experiments further support the conclusions derived from the phase diagram.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons. |
| Keywords: | Camphor; Phase Diagram; Polymer Solvent Complex; Poly (vinylidene Fluoride); Thermoreversible Gel |
| ID Code: | 85343 |
| Deposited On: | 02 Mar 2012 05:31 |
| Last Modified: | 02 Mar 2012 05:31 |
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