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arXiv 0908.1822cond-mat.softcond-mat.mtrl-sci
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热可逆缔合Polymer网络:I.热力学、化学动力学和Polymer物理学的相互作用

Thermoreversible Associating Polymer Networks: I. Interplay of Thermodynamics, Chemical Kinetics, and Polymer Physics

Robert S. Hoy, Glenn H. Fredrickson

摘要:

混合分子动力学/蒙特卡罗模拟用于研究非缠结的热可逆缔合超分子聚合物的熔体。在这一系列论文的第一篇中,我们描述并验证了一个模型,该模型有效地分离了热力学和化学动力学对这些系统的动力学和力学的影响,并且可扩展到任意非平衡状态和非线性力学性质。我们研究了模型的静态(和非均相)动力学,非平衡化学动力学和机械性能。我们的许多结果可以理解为从扩散限制到动力学限制的粘键复合的交叉,这既影响聚合物物理,也受其影响。e.父链的连通性。

英文摘要:

Hybrid molecular dynamics/Monte Carlo simulations used to study melts of unentangled, thermoreversibly associating supramolecular polymers. In this first of a series of papers, we describe and validate a model that is effective in separating the effects of thermodynamics and chemical kinetics on the dynamics and mechanics of these systems, and is extensible to arbitrarily nonequilibrium situations and nonlinear mechanical properties. We examine the model's quiescent (and heterogeneous) dynamics, nonequilibrium chemical dynamics, and mechanical properties. Many of our results may be understood in terms of the crossover from diffusion-limited to kinetically-limited sticky bond recombination, which both influences and is influenced by polymer physics, i. e. the connectivity of the parent chains.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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