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ID 115349
著者
Kamikubo, Takahiro Tokushima University
Fujioka, Yasuhiro Tokushima University
キーワード
Hydrogen bond
N-Isopropylacrylamide
Syndiotactic-specific radical polymerization
Solvent effect
資料タイプ
学術雑誌論文
抄録
Radical polymerizations of N-isopropylacrylamide (NIPAAm) in several solvents at low temperatures in the absence or presence of hexamethylphosphoramide (HMPA) or 3-methyl-3-pentanol (3Me3PenOH) were examined. The isotacticities of the poly(NIPAAm)s obtained in the absence of HMPA and 3Me3PenOH at lower temperatures slightly increased as the polarities of the solvents used increased. The addition of HMPA significantly induced the syndiotactic-specificity even in polar solvents such as tetrahydrofuran and acetone, although the use of the solvents having proton-donating ability, such as chloroform, prevented the induction of the syndiotactic-specificity, even if their polarities are low. In the presence of 3Me3PenOH, a good correlation between the polarities of the solvents used and the syndiotacticities of the obtained poly(NIPAAm)s was observed, and poly(NIPAAm) with r = 73% was obtained using the toluene/methylcyclohexane mixed solvent.
掲載誌名
European Polymer Journal
ISSN
00143057
cat書誌ID
AA00639767
AA11527404
出版者
Elsevier
44
4
開始ページ
1053
終了ページ
1059
発行日
2008-02-09
権利情報
© 2008. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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