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ID 115967
著者
Kitajima, Hiroko Tokushima University
妹尾, 真紀子 Tokushima University
キーワード
Hydrogen bond
Stereospecific radical polymerization
Chelate complex
資料タイプ
学術雑誌論文
抄録
Radical polymerization of N-isopropylacrylamide (NIPAAm) in toluene was investigated in the presence of bidentate Lewis base such as diphosphonates. Isotacticity of the obtained poly(NIPAAm)s slightly increased at –80°C, whereas syndiotactic-rich poly(NIPAAm)s were obtained at –40 to 0°C. This result corresponded to the results observed in the presence of primary alkyl phosphates. NMR analysis revealed that NIPAAm monomer and tetraisopropyl methylenebisphosphonate formed mono-binding hydrogen-bond-assisted complex at 0°C, but a chelate complex at –80°C. Thus, it was concluded that the stereospecificity in NIPAAm polymerization strongly depended on the complexation mode of the added bidentate Lewis base.
掲載誌名
Polymer
ISSN
00323861
cat書誌ID
AA11537383
出版者
Elsevier
47
2
開始ページ
539
終了ページ
546
発行日
2005-12-07
権利情報
© 2005. 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