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: Contribution to journalArticle査読

27 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.

本文言語英語
ページ(範囲)17781-17784
ページ数4
ジャーナルLangmuir
26
23
DOI
出版ステータス出版済み - 12 7 2010

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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