Local Chain Dynamics of Several Polymers in Θ Solvents Studied by the Fluorescence Depolarization Method

DOI Web Site Web Site 1 Citations 9 References
  • Yamamoto Masahide
    Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University
  • Horinaka Jun-ichi
    Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University
  • Aoki Hiroyuki
    Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University
  • Tawa Keiko
    Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University
  • Ito Shinzaburo
    Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University

Bibliographic Information

Other Title
  • Local Chain Dynamics of Several Polymer

Search this article

Abstract

The relaxation times of local motion for five kinds of polymers: cis-polyisoprene (cis-PI), polystyrene (PS), poly (α-methylstyrene)(PαMS), syndiotactic-poly (methyl methacrylate) (s-PMMA), and poly (N-vinylcarbazole) (PVCz) were measured in the Θ solvents by the fluorescence depolarization technique. The viscosity reduced relaxation time Tm/η was in the following order with the activation energy in the same order: cis-PI < PS < PαMS < PVCz < s-PMMA. The relaxation time and the activation energy depend on whether the polymer is either mono-substituted or di-substituted, the bulkiness of the substituents, and also the stereoregularity. It was found that Tg, is closely correlated with the local chain mobility obtained in dilute solution.

Journal

Citations (1)*help

See more

References(9)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top