| 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
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| 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
|
| 巻 | 47
|
| 号 | 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/
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| EDB ID | |
| 出版社版DOI | |
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| フルテキストファイル | |
| 言語 |
eng
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| 著者版フラグ |
著者版
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| 部局 |
理工学系
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