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首页> 外文期刊>The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical >Entropy-Driven Segregation and Its Competition with Crystal Nucleation in the Binary Blends of Stretched and Free Guest Polymers
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Entropy-Driven Segregation and Its Competition with Crystal Nucleation in the Binary Blends of Stretched and Free Guest Polymers

机译：拉伸和自由客体聚合物的二元共混物中的熵驱动偏析及其与晶体成核的竞争

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摘要

Enhancing the dynamic asymmetry between liquid like and solid-like components leads to spontaneous segregation. As a typical example, the binary blends of stretched and free guest polymers were investigated by our dynamic Monte Carlo simulations. The results evidenced an entropic driving force for the strain-induced segregation between two components, similar to that for Onsager's lyotropic liquid crystals. In addition, with the decrease of strain rates, its competition with strain-induced crystal nucleation results in variable compositions in crystal precursors. The scenario helps to settle down the controversial arguments on the flow-induced precursors of shish-kebab crystallites in the melt.
机译：增强液体状和固体状成分之间的动态不对称会导致自发分离。作为一个典型的例子，通过我们的动态蒙特卡洛模拟研究了拉伸和自由客体聚合物的二元共混物。该结果证明了应变引起的两个组分之间的偏析的熵驱动力，类似于Onsager的溶致液晶。另外，随着应变速率的降低，其与应变诱导的晶体成核的竞争导致晶体前体的组成可变。该场景有助于解决在熔体中流动引起的烤肉串微晶前体的争议性论点。

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