Phase Behavior of Poly(4-tert-butylstyrene-stat-4-tertbutoxystyrene)/ polyisoprene blends with competitive interactions

Siti Arah Abdul Rahman, Daisuke Kawaguchi, Daisaku Ito, Atsushi Takano, Yushu Matsushita

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)

抄録

The phase behavior of statistical copolymers composed of (4-tert-butylstyrene) (B) and (4-tert-butoxystyrene) (O), abbreviated as s-BO, with polyisoprene (I) was investigated by optical microscopic (OM) observation and small-angle neutron scattering (SANS) measurements. It has been known that B/I blend shows lower critical solution temperature (LCST) type phase diagram, while O/I blend has upper critical solution temperature (UCST) type one. Several blends of s-BOs having mol fraction of B, mB, comparable to 0.50, with I showed both UCST and LCST type phase diagram. Furthermore, UCST type phase behavior was observed for blends having small mB, while LCST type one was for that of large mB at all used temperatures. Hence, the phase behavior of s-BO/I blend can be understood as a result of the competition of two interactions having opposite temperature dependence.

本文言語英語
ページ(範囲)2272-2280
ページ数9
ジャーナルJournal of Polymer Science, Part B: Polymer Physics
47
22
DOI
出版ステータス出版済み - 11 15 2009
外部発表はい

All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 物理化学および理論化学
  • ポリマーおよびプラスチック
  • 材料化学

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