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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
資料タイプ
学術雑誌論文
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.
掲載誌名
RSC Advances
ISSN
20462069
出版者
The Royal Society of Chemistry
4
95
開始ページ
53079
終了ページ
53089
発行日
2014-10-03
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