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ID 115212
Author
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
Content Type
Journal Article
Description
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.
Journal Title
RSC Advances
ISSN
20462069
Publisher
The Royal Society of Chemistry
Volume
4
Issue
95
Start Page
53079
End Page
53089
Published Date
2014-10-03
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
Author
departments
Science and Technology