Stereoregulation of thermoresponsive polymer brushes by surface-initiated living radical polymerization and the effect of tacticity on surface wettability

Naokazu Idota, Kenichi Nagase, Keiji Tanaka, Teruo Okano, Masahiko Annaka

研究成果: Article査読

29 被引用数 (Scopus)

抄録

In this study, stereocontrolled poly(N-isopropylacrylamide) (PIPAAm) brushes were grafted from surfaces by atom transfer radical polymerization (ATRP) in the presence of a Lewis acid, and the effect of PIPAAm brush tacticity on the thermoresponsive wettabiliy was investigated. PIPAAm grafted by ATRP in the presence of Y(OTf)3 showed high isotacticity, while the control brush polymerized in the absence of Y(OTf)3 was clearly atactic. The isotacticity and molecular weight of PIPAAm brushes were controlled by polymerization conditions. The wettability of isotactic PIPAAm-grafted surfaces decreased slightly below 10°C, although the phase transition temperature of atactic surface was 30°C, and the bulk isotactic polymer was water-insoluble between 5 and 45°C.

本文言語English
ページ(範囲)17781-17784
ページ数4
ジャーナルLangmuir
26
23
DOI
出版ステータスPublished - 2010 12月 7
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 表面および界面
  • 分光学
  • 電気化学

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