| Item type |
文献 / Documents(1) |
| 公開日 |
2020-09-11 |
| アクセス権 |
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アクセス権 |
open access |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版社版DOI |
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関連識別子 |
https://doi.org/10.1039/C4RA08743G |
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関連名称 |
10.1039/C4RA08743G |
| 出版タイプ |
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出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| タイトル |
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|
タイトル |
Hydrogen-bond-assisted isotactic-specific radical polymerization of N-vinyl-2-pyrrolidone with tartrate additives in toluene at low temperatures : high-resolution 1H NMR analysis |
| 著者 |
平野, 朋広
ミヤモト, ユウヤ
アマノ, シンヤ
タツミ, カズヤ
アンモト, タクヤ
キムラ, ヒロシ
吉田, 健
押村, 美幸
右手, 浩一
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| 抄録 |
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内容記述 |
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. |
| 書誌情報 |
en : RSC Advances
巻 4,
号 95,
p. 53079-53089,
発行日 2014-10-03
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| 収録物ID |
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
20462069 |
| 出版者 |
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出版者 |
The Royal Society of Chemistry |
| EID |
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識別子 |
286365 |
| 言語 |
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|
言語 |
eng |
rsca_4_95_53079.pdf (546 KB)
