Topological Constraint in Ring Polymers Studied by Monte Carlo Simulation
蒙特卡罗模拟研究环状聚合物的拓扑约束
基本信息
- 批准号:22740281
- 负责人:
- 金额:$ 2.5万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Young Scientists (B)
- 财政年份:2010
- 资助国家:日本
- 起止时间:2010-04-01 至 2014-03-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
I studied equilibrium conformations of ring polymers at their theta-conditions using a Monte-Carlo simulation. The Flory's critical exponents, nu, were obtained from the dependence of the radius of gyration, Rg, on the segment number of the polymers, N. At the theta-temperature the excluded volumes of linear polymers are screened completely by the attractive force between segments, where the nu value is 1/2 and the trajectories of the chains can be described as a random walk. If the nu value for ring polymers is not 1/2 at the theta-temperature for linear polymers, the chain conformations of ring polymers are not described as a closed random walk. I reported that the theta-temperature for trivial-, 3_1 and 5_1 ring polymers are lower than that for linear polymers. I also suggested a new simulation algorithm, where polymer chains were placed on a face-centered cubic lattice and can move not only with the local motion but also with the trans-location in the algorithm.
我用蒙特-卡罗模拟研究了环状聚合物在θ条件下的平衡构象。Flory临界指数nu由回转半径Rg与聚合物链段数N的关系求得。 在θ-温度下,线性聚合物的排斥体积完全被链段之间的吸引力所屏蔽,其中nu值为1/2,并且链的轨迹可以被描述为无规行走。 如果环状聚合物的nu值在线性聚合物的θ-温度下不是1/2,则环状聚合物的链构象不被描述为闭合的无规行走。我报道了平凡的,3_1和5_1环聚合物的θ-温度低于线性聚合物。本文还提出了一种新的模拟算法,将聚合物链置于面心立方晶格上,使其不仅可以进行局部运动,而且可以进行平移运动。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
カテナン型リングポリマーのトポロジーと分子鎖の拡がりの相関
索烷型环状聚合物的拓扑结构与分子链延伸的相关性
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:鈴木次郎;高野敦志;松下裕秀
- 通讯作者:松下裕秀
Dimension of Ring Polymers in Melt Studied by Monte-Carlo Simulation
蒙特卡罗模拟研究熔体中环状聚合物的尺寸
- DOI:
- 发表时间:2010
- 期刊:
- 影响因子:0
- 作者:Jiro Suzuki;Atsushi Takano and Yushu Matsushita
- 通讯作者:Atsushi Takano and Yushu Matsushita
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