ID | 115212 |
著者 |
Miyamoto, Yuya
The University of Tokushima
Amano, Shinya
The University of Tokushima
Tatsumi, Kazuya
The University of Tokushima
Anmoto, Takuya
The University of Tokushima
Kimura, Hiroshi
The University of Tokushima
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資料タイプ |
学術雑誌論文
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抄録 | A diethyl L-tartrate (L-EtTar)-assisted radical polymerization of N-vinyl-2-pyrrolidone has been developed as the first reported example of the synthesis of isotactic-rich poly(N-vinyl-2-pyrrolidone) (PVP). The addition of L-EtTar in toluene at temperatures of –40°C and lower led to a significant increase in the polymer yield by one order of magnitude compared with the reaction in the absence of L-EtTar. Decreasing the polymerization temperature led to increases in the isotacticity of the PVP, with the mm triad reaching 66.4% at −93 °C. 1H NMR measurement at 920 MHz was conducted to establish a reliable strategy for quantifying the triad tacticities. High-temperature NMR measurements at 250 °C were performed using a specially-designed NMR probe, which led to dramatic narrowing of the 1H line width.
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掲載誌名 |
RSC Advances
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ISSN | 20462069
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出版者 | The Royal Society of Chemistry
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巻 | 4
|
号 | 95
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開始ページ | 53079
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終了ページ | 53089
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発行日 | 2014-10-03
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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
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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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