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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

Primitive chain network simulations for H-polymers under fast shear

http://hdl.handle.net/2237/00032344
904348e0-f2e2-4fc5-837a-7921c2dfdace
名前 / ファイル ライセンス アクション
SoftMatter2020.pdf SoftMatter2020 (978.2 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2020-06-10
タイトル
タイトル Primitive chain network simulations for H-polymers under fast shear
著者 Masubuchi, Yuichi

× Masubuchi, Yuichi

WEKO 99580

Masubuchi, Yuichi

Search repository
Ianniruberto, Giovanni

× Ianniruberto, Giovanni

WEKO 99581

Ianniruberto, Giovanni

Search repository
Marrucci, Giuseppe

× Marrucci, Giuseppe

WEKO 99582

Marrucci, Giuseppe

Search repository
抄録
内容記述 Branchpoint Withdrawal (BPW) has been recognized as one of the important molecular mechanisms for the description of the dynamics of entangled branched polymers under fast flows. However, the relation to the other known molecular mechanisms has not been fully elucidated yet. In this study we performed primitive chain network (i.e., multi-chain slip-link) Brownian simulations for a melt of a well-characterized monodisperse polystyrene H-polymer, for which the linear viscoelasticity and shear viscosity growth curves at several shear rates are available in the literature. After confirming the consistency of the simulations with the rheological data, we used the simulations to analyze the molecular motion in detail. The results reveal that molecular tumbling occurs in branched polymers just as in linear ones, and that it is accelerated by BPW. Furthermore, BPW not only mitigates backbone stretch, as expected, but also arm stretch. However, because the transient startup viscosity is anyhow dominated by chain stretch dynamics rather than by molecular tumbling, our results rationalize the fact that pom–pom theories successfully ignore tumbling in shear flows.
内容記述タイプ Abstract
内容記述
内容記述 ファイル公開:2021/01/28
内容記述タイプ Other
出版者
出版者 Royal Society of Chemistry
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/10.1039/C9SM01971E
ISSN(print)
収録物識別子タイプ ISSN
収録物識別子 1744-683X
書誌情報 Soft Matter

巻 16, 号 4, p. 1056-1065, 発行日 2020-01-28
著者版フラグ
値 author
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