Elasticity of sphere-forming polystyrene-b-polyisoprene-b-poly(2-vinylpyridine)/polystyrene-b-polyisoprene/ polyisoprene-b-poly(2-vinylpyridine) blends: The role of dangling chains

Yoshiaki Takahashi, Yoshihiko Akazawa, Atsushi Takano, Yushu Matsushita

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The relationship between the young's moduli and bridge/dangling chain fractions for the SIP used in studies was analyzed. Two diblock copolymers, SI and IP were synthesized by anionic polymerization technique as SIP. The blend samples were prepared by solvent casting from dilute THF solutions of samples for a few days and further dried for 6h and annealed at 150 °C for 12 h in a vacuum oven. Dynamic elongation measurements were performed with Rheometric Solid analyzers. It was observed that there was dependence between storage modulus and loss modulus measured for all samples. The results show that young's moduli of sphere-forming triblock copolymers are proportional to the bridge fraction and the difference between dangling ends and loops are very minor.

Original languageEnglish
Pages (from-to)603-605
Number of pages3
JournalPolymer Journal
Volume38
Issue number6
DOIs
Publication statusPublished - Aug 17 2006

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Materials Chemistry

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