Strain-Induced Crystallization in Natural Rubber: Flory’s Theory Revisited

IF 5.1 1区化学 Q1 POLYMER SCIENCE

Macromolecules Pub Date : 2020-04-14 DOI:10.1021/acs.macromol.0c00515

Paul Sotta*, Pierre-Antoine Albouy

引用次数: 21

Abstract

In this paper, some aspects of the physical mechanisms involved in strain-induced crystallization (SIC) in cross-linked natural rubber networks are discussed. The theory of SIC as developed by Flor...

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天然橡胶的应变诱导结晶:Flory理论的再考察

本文讨论了交联天然橡胶网络中应变诱导结晶(SIC)的物理机制。Flory发展的SIC理论被认为是在某种程度上创新的角度，类似于液气相变。提出了一个简单的杠杆规则，将结晶度指数与局部和全局拉伸比联系起来。首先考虑平衡性质。在这个框架内讨论了一些简单的实验，以启发SIC的一些基本方面。SIC的序参量为非晶相拉伸比，因此强调了直接测量该参量的重要性。特别强调了伴随碳化硅的剩余非晶部分的松弛。结晶动力学问题是碳化硅大多数方面的基础。利用上述杠杆规则，我们表明晶体含量的实际时间依赖性可能与应变松弛机制以一种非常简单的方式有关。结晶动力学也是解释在动力学条件下观察到的滞后行为的基础。讨论了与静态SIC的异同。我们把经典的成核理论转到碳化硅的情况下，并在这个框架内讨论动力学。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Macromolecules 工程技术-高分子科学

CiteScore

9.30

自引率

16.40%

发文量

942

审稿时长

2 months

期刊介绍： Macromolecules publishes original, fundamental, and impactful research on all aspects of polymer science. Topics of interest include synthesis (e.g., controlled polymerizations, polymerization catalysis, post polymerization modification, new monomer structures and polymer architectures, and polymerization mechanisms/kinetics analysis); phase behavior, thermodynamics, dynamic, and ordering/disordering phenomena (e.g., self-assembly, gelation, crystallization, solution/melt/solid-state characteristics); structure and properties (e.g., mechanical and rheological properties, surface/interfacial characteristics, electronic and transport properties); new state of the art characterization (e.g., spectroscopy, scattering, microscopy, rheology), simulation (e.g., Monte Carlo, molecular dynamics, multi-scale/coarse-grained modeling), and theoretical methods. Renewable/sustainable polymers, polymer networks, responsive polymers, electro-, magneto- and opto-active macromolecules, inorganic polymers, charge-transporting polymers (ion-containing, semiconducting, and conducting), nanostructured polymers, and polymer composites are also of interest. Typical papers published in Macromolecules showcase important and innovative concepts, experimental methods/observations, and theoretical/computational approaches that demonstrate a fundamental advance in the understanding of polymers.