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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

Dimension of ring polymers in bulk studied by Monte-Carlo simulation and self-consistent theory

http://hdl.handle.net/2237/14168
61f0a94c-5fb3-4a93-95f4-42f9275db63e
名前 / ファイル ライセンス アクション
the_journal_of_chemical_physics_131_14_144902.pdf the_journal_of_chemical_physics_131_14_144902.pdf (323.3 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2010-09-21
タイトル
タイトル Dimension of ring polymers in bulk studied by Monte-Carlo simulation and self-consistent theory
著者 Suzuki, Jiro

× Suzuki, Jiro

WEKO 38815

Suzuki, Jiro

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Takano, Atsushi

× Takano, Atsushi

WEKO 38816

Takano, Atsushi

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Deguchi, Tetsuo

× Deguchi, Tetsuo

WEKO 38817

Deguchi, Tetsuo

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Matsushita, Yushu

× Matsushita, Yushu

WEKO 38818

Matsushita, Yushu

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権利
権利情報 Copyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
抄録
内容記述 We studied equilibrium conformations of ring polymers in melt over the wide range of segment number N of up to 4096 with Monte-Carlo simulation and obtained N dependence of radius of gyration of chains Rg. The simulation model used is bond fluctuation model (BFM), where polymer segments bear excluded volume; however, the excluded volume effect vanishes at N→∞, and linear polymer can be regarded as an ideal chain. Simulation for ring polymers in melt was performed, and the ν value in the relationship Rg∝Nν is decreased gradually with increasing N, and finally it reaches the limiting value, 1/3, in the range of N ≥ 1536, i.e., Rg∝N^1/3. We confirmed that the simulation result is consistent with that of the self-consistent theory including the topological effect and the osmotic pressure of ring polymers. Moreover, the averaged chain conformation of ring polymers in equilibrium state was given in the BFM. In small N region, the segment density of each molecule near the center of mass of the molecule is decreased with increasing N. In large N region the decrease is suppressed, and the density is found to be kept constant without showing N dependence. This means that ring polymer molecules do not segregate from the other molecules even if ring polymers in melt have the relationship ν = 1/3. Considerably smaller dimensions of ring polymers at high molecular weight are due to their inherent nature of having no chain ends, and hence they have less-entangled conformations.
内容記述タイプ Abstract
出版者
出版者 American Institute of Physics
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 0021-9606
書誌情報 THE JOURNAL OF CHEMICAL PHYSICS

巻 131, 号 14, p. 144902-144902, 発行日 2009-10-14
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/14168
識別子タイプ HDL
URI
識別子 http://dx.doi.org/10.1063/1.3247190
識別子タイプ DOI
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