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首页> 外文期刊>Macromolecular theory and simulations >Dynamics of Phase Separation in Polymer Blends Revisited: Morphology, Spinodal, Noise, and Nucleation
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Dynamics of Phase Separation in Polymer Blends Revisited: Morphology, Spinodal, Noise, and Nucleation

机译:再谈聚合物共混物中的相分离动力学:形态,旋节线,噪声和成核

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摘要

The properties of the model B of mesoscopic dynamic with the Flory-Huggins free energy for the homopolymer blend are discussed. We focus on the rescaling of the spatial coordinates in the model and demonstrate that the commonly used rescaling of the spatial coordinates by the function vanishing at the spinodal leads to the unphysical pinning of the domains. The proper rescaling function for the spatial variables which avoids the unphysical pinning of the domain growth at the spinodal is proposed. We discuss in detail the evolution of morphological measures during separation in homopolymer blends and the problem of nucleation close to the spinodal.
机译:讨论了均聚物共混物具有Flory-Huggins自由能的介观动力学模型B的性质。我们专注于模型中空间坐标的重新缩放,并证明通过在旋节线上消失的函数,通常使用的空间坐标的重新缩放会导致域的非物理固定。提出了针对空间变​​量的适当重标度函数,以避免在旋节线上域生长的非物理固定。我们详细讨论了均聚物共混物分离过程中形态学措施的演变以及靠近旋节线的成核问题。

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