综述：模拟聚合物的均方位移。

IF 4.7 3区工程技术 Q1 POLYMER SCIENCE

Polymers Pub Date : 2025-04-27 DOI:10.3390/polym17091193

George D J Phillies

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引用次数: 0

摘要

我们回顾了聚合物流体的模拟，报告了聚合物珠、段和链的均方位移g(t)。通过仔细的数值分析，但与某些聚合物动力学模型相反，我们表明假设的幂律区g(t) ~ tα几乎不存在。在大多数（但不是全部）情况下，log（g(t)）对log(t)的曲线显示出平滑的曲线，其斜率随时间连续变化。我们推断，预测g(t)幂律制度的模型对线性聚合物的熔体无效。

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Review: Mean-Square Displacements of Simulated Polymers.

We review simulations of polymeric fluids that report mean-square displacements g(t) of polymer beads, segments, and chains. By means of careful numerical analysis, but contrary to some models of polymer dynamics, we show that hypothesized power-law regimes g(t)∼tα are almost never present. In most but not quite all cases, plots of log(g(t)) against log(t) show smooth curves whose slopes vary continuously with time. We infer that models that predict power-law regimes for g(t) are invalid for melts of linear polymers.

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来源期刊

Polymers POLYMER SCIENCE-

CiteScore

8.00

自引率

16.00%

发文量

4697

审稿时长

1.3 months

期刊介绍： Polymers (ISSN 2073-4360) is an international, open access journal of polymer science. It publishes research papers, short communications and review papers. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Polymers provides an interdisciplinary forum for publishing papers which advance the fields of (i) polymerization methods, (ii) theory, simulation, and modeling, (iii) understanding of new physical phenomena, (iv) advances in characterization techniques, and (v) harnessing of self-assembly and biological strategies for producing complex multifunctional structures.