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Physical Gels of a Syndiotactic Polystyrene Derivative with a Large Side-Chain Group |
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| Authors: | Tomohiro Sago Tomokatsu Tokami Hideyuki Itagaki Nobuhide Ishihara Christina Canter Jean-Michel Guenet |
| Affiliation: | 1. Department of Chemistry, Graduate School of Science and Technology, Shizuoka University;2. Department of Chemistry, School of Education, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan;3. Chemical Research Laboratory, Idemitsu Kosan Co., Ltd., 1-1 Anesaki-kaigan, Ichihara, Chiba 299-0193, Japan;4. Institut Charles Sadron, CNRS UPR22, 23 rue du Loess, BP 84047, F-67083 Strasbourg Cedex2, France |
| Abstract: | Summary: Gelation of syndiotactic poly(p-tert-butylstyrene) (sPTBS), a syndiotactic polystyrene (sPS) derivative having a larger side-chain group, was first examined with several solvents. The temperature-concentration phase diagram of sPTBS/trans-decalin gel clearly exhibited that sPTBS formed a polymer-solvent molecular compound with a ratio of 2.7 trans-decalin per one monomer unit. Our polarized fluorescence technique demonstrated that there appeared to exist more spacious free volume among sPTBS chains than sPS in a gel state. A cause determining the morphology of sPTBS with organic solvents was discussed in the present paper. |
| Keywords: | fluorescence depolarization method free volume physical gels polymer-solvent molecular compounds syndiotactic poly(p-tert-butyl)styrene syndiotactic polystyrene |