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Thermoreversible Gelation of Syndiotactic Polystyrene in Naphthalene
Authors:Sudip Malik  Cyrille Rochas  Bruno Démé  Jean-Michel Guenet
Affiliation:1. Institut Charles Sadron, CNRS UPR22, 6 rue Boussingault, 67083 Strasbourg Cedex, France;2. Laboratoire de Spectrométrie Physique CNRS-UJF UMR5588, 38402 Saint Martin d'Hères Cedex, France;3. Institut Laue-Langevin, 6 rue Jules Horowitz, BP 156, 38042 Grenoble Cedex, France
Abstract:Investigation into syndiotactic polystyrene/naphthalene systems of concentrations ranging from 0 to 78% (w/w) have been carried out by electron microscopy, DSC, and neutron diffraction. It is found that a fibrillar morphology is produced in this solvent, similar to that observed for thermoreversible gels. The temperature-concentration phase diagram suggests the existence of two compounds of differing stoichiometries. Neutron diffraction experiments confirm the existence of compounds in this system.
Keywords:polymer-solvent complex  syndiotactic polystyrene  T-C phase diagram  thermoreversible gel
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