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ID 115344
タイトル別表記
HETEROTACTIC POLY(N-ISOPROPYLACRYLAMIDE)
著者
Kamikubo, Takahiro Tokushima University
Okumura, Yuya Tokushima University
Bando, Yoichi Tokushima University
Yamaoka, Ryosuke Tokushima University
森, 健 Kyushu University
キーワード
stereospecific polymers
radical polymerization
stimuli-sensitive polymers
hydrogen bonding
N-isopropylacrylamide
heterotactic
資料タイプ
学術雑誌論文
抄録
Radical polymerization of N-isopropylacrylamide (NIPAAm) in toluene at low temperatures, in the presence of fluorinated alcohols, produced heterotactic polymer comprising an alternating sequence of meso and racemo dyads. The heterotacticity reached 70% in triads when polymerization was carried out at –40°C using nonafluoro-tert-butanol as the added alcohol. NMR analysis revealed that formation of a 1:1 complex of NIPAAm and fluorinated alcohol through C=O•••H-O hydrogen bonding induces the heterotactic specificity. A mechanism for the heterotactic-specific polymerization is proposed. Examination of the phase transition behavior of aqueous solutions of heterotactic poly(NIPAAm) revealed that the hysteresis of the phase transition between the heating and cooling cycles depended on the average length of meso dyads in poly(NIPAAm).
掲載誌名
Journal of Polymer Science Part A : Polymer Chemistry
ISSN
0887624X
10990518
cat書誌ID
AA1068915X
AA11624127
出版者
Wiley
47
10
開始ページ
2539
終了ページ
2550
発行日
2009-04-09
権利情報
This is the peer reviewed version of the following article: Hirano, T., Kamikubo, T., Okumura, Y., Bando, Y., Yamaoka, R., Mori, T. and Ute, K. (2009), Heterotactic‐specific radical polymerization of N‐isopropylacrylamide and phase transition behavior of aqueous solution of heterotactic poly(N‐isopropylacrylamide). J. Polym. Sci. A Polym. Chem., 47: 2539-2550., which has been published in final form at https://doi.org/10.1002/pola.23338. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
EDB ID
出版社版DOI
出版社版URL
フルテキストファイル
言語
eng
著者版フラグ
著者版
部局
理工学系