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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

Synthesis and Characterization of Comb-Shaped Ring Polystyrenes

http://hdl.handle.net/2237/25211
42b7097b-a7a1-4e51-a35e-387c37eeba5c
名前 / ファイル ライセンス アクション
20160330-Ring_Comb_1.pdf 20160330-Ring_Comb_1.pdf ファイル公開:2017/04/05 (1.0 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2016-12-16
タイトル
タイトル Synthesis and Characterization of Comb-Shaped Ring Polystyrenes
著者 Doi, Yuya

× Doi, Yuya

WEKO 68048

Doi, Yuya

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Iwasa, Yutaro

× Iwasa, Yutaro

WEKO 68049

Iwasa, Yutaro

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Watanabe, Kazuki

× Watanabe, Kazuki

WEKO 68050

Watanabe, Kazuki

Search repository
Nakamura, Masahide

× Nakamura, Masahide

WEKO 68051

Nakamura, Masahide

Search repository
Takano, Atsushi

× Takano, Atsushi

WEKO 68052

Takano, Atsushi

Search repository
Takahashi, Yoshiaki

× Takahashi, Yoshiaki

WEKO 68053

Takahashi, Yoshiaki

Search repository
Matsushita, Yushu

× Matsushita, Yushu

WEKO 68054

Matsushita, Yushu

Search repository
権利
権利情報 “This document is the Accepted Manuscript version of a Published Work that appeared in final form in [Macromolecules], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [http://pubsdc3.acs.org/articlesonrequest/AOR-zi2XxpVsjfva3M2a2sUY].”
抄録
内容記述 A series of comb-shaped ring polystyrene samples, RC, composed of a common ring backbone and multiple linear branches with three different lengths were successfully prepared. First, a highly purified ring backbone was synthesized by anionic polymerizations followed by multistep size exclusion chromatography (SEC) and interaction chromatography (IC) fractionations. Second, this backbone was reacted with an excess molar amount of anionic living linear branch chains. Through the coupling reactions, the targeted RC samples were successfully obtained with high grafting efficiency without causing any side reactions. Their chain dimensions in THF were investigated by SEC-MALS measurements, and they were evaluated by estimating the shrinking factor g1/2 (= Rg,comb/Rg,linear). All RC samples prepared in this study exhibited smaller Rg and g1/2 values than those of the corresponding linear combs, LC. Moreover, combs with short branches exhibited an evidently larger g1/2 than the Gaussian chains due to the intramolecular excluded volume effects, being originated from the local high segment density in the vicinity of the branch points. In contrast, g1/2 for combs having long branches agreed reasonably well with the values based on the Gaussian approximation. This result suggests that the intramolecular excluded volume effect is weakened with increasing branch chain length, and consequently the comb behaves like a star polymer. Thus, characteristic chain dimensions of comb-shaped ring samples have been clarified, which strongly depend on the branch chain length and the backbone architecture.
内容記述タイプ Abstract
出版者
出版者 ACS Publications
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
ISSN
収録物識別子タイプ ISSN
収録物識別子 0024-9297
書誌情報 Macromolecules

巻 49, 号 8, p. 3109-3115, 発行日 2016-04-05
著者版フラグ
値 author
URI
識別子 http://doi.org/10.1021/acs.macromol.6b00208
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/25211
識別子タイプ HDL
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