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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

Valencene as a naturally occurring sesquiterpene monomer for radical copolymerization with maleimide to induce concurrent 1:1 and 1:2 propagation

http://hdl.handle.net/2237/00030541
2c316dd8-1367-4412-9e87-a7bfc5b5999a
名前 / ファイル ライセンス アクション
POLYMER_DEGRADATION_AND_STABILITY161_2019_183-190.pdf POLYMER_DEGRADATION_AND_STABILITY161_2019_183-190 (3.2 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2019-07-11
タイトル
タイトル Valencene as a naturally occurring sesquiterpene monomer for radical copolymerization with maleimide to induce concurrent 1:1 and 1:2 propagation
著者 Hashimoto, Hiroaki

× Hashimoto, Hiroaki

WEKO 92573

Hashimoto, Hiroaki

Search repository
Takeshima, Hisaaki

× Takeshima, Hisaaki

WEKO 92574

Takeshima, Hisaaki

Search repository
Nagai, Tomonari

× Nagai, Tomonari

WEKO 92575

Nagai, Tomonari

Search repository
Uchiyama, Mineto

× Uchiyama, Mineto

WEKO 92576

Uchiyama, Mineto

Search repository
Satoh, Kotaro

× Satoh, Kotaro

WEKO 92577

Satoh, Kotaro

Search repository
Kamigaito, Masami

× Kamigaito, Masami

WEKO 92578

Kamigaito, Masami

Search repository
権利
権利情報 © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
キーワード
主題Scheme Other
主題 Terpene
キーワード
主題Scheme Other
主題 Orange
キーワード
主題Scheme Other
主題 Radical copolymerization
キーワード
主題Scheme Other
主題 Alternating copolymerization
キーワード
主題Scheme Other
主題 Thermal properties
抄録
内容記述 Valencene, a naturally occurring sesquiterpene that can be obtained from various citrus fruits, was copolymerized as an unconjugated 1,1-disubstituted bulky vinyl monomer by radical copolymerization with conjugated monomers possessing electron-withdrawing substituents, such as maleimides, acrylates, methacrylates, acrylonitrile, and methacrylonitrile, in toluene and PhC(CF3)2OH. The fluorinated alcohol increased the copolymerizability, as in the radical copolymerization of other unconjugated non-polar olefins with those electron-acceptor comonomers. In particular, the copolymerization of valencene and N-phenylmaleimide in PhC(CF3)2OH proceeded via concurrently occurring 1:1 and 1:2 propagation, in which the monomer reactivity ratio of maleimide and valencene to the maleimide radical with the penultimate valencene unit was close to 1 according to a kinetic analysis of the copolymerization based on the penultimate model. Therefore, the copolymerizability of valencene was higher than that of limonene, which is a similar unconjugated 1,1-disubstituted vinyl monomer with a smaller cyclohexenyl substituent that undergoes selective 1:2 radical copolymerization with maleimide derivatives under the same conditions. Reversible addition-fragmentation chain transfer RAFT copolymerization using a trithiocarbonate resulted in copolymers with controlled molecular weights and chain-end groups. The biobased copolymers of valencene and N-phenylmaleimide showed relatively high glass transition temperatures (Tg) of approximately 220–240 °C and relatively high thermal stability with 5% decomposition temperatures (Td5) of approximately 330–340 °C due to their rigid main-chain structures.
内容記述タイプ Abstract
内容記述
内容記述 ファイル公開:2021-03-01
内容記述タイプ Other
出版者
出版者 Elsevier
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
DOI
関連識別子
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.polymdegradstab.2019.01.025
ISSN(print)
収録物識別子タイプ ISSN
収録物識別子 0141-3910
書誌情報 Polymer Degradation and Stability

巻 161, p. 183-190, 発行日 2019-03
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