论文标题
相关随机共聚物的相位行为
Phase behavior of correlated random copolymers
论文作者
论文摘要
在这项工作中，计算了与逼真的链长度相关的随机共聚物相关的随机共聚物相图。这是通过两个步骤实现的。首先，我们在组成和块状方面得出共聚物链的分布函数。然后，我们使用了Sollich和Cates [Sollich，P。; Cates，M。E。;物理。莱特牧师。 1998，80，1365-1368]用于多分散系统，以减少计算问题自由度的数量并计算相图。我们探讨了过渡点的位置和共存阶段的组成如何取决于共聚物组成，块状和聚合程度。所提出的方法可以考虑分馏，这证明对统计共聚物相位图的出现有影响。
In this work, Flory-Huggins phase diagrams for correlated random copolymers with realistic chain lengths are calculated. This is achieved in two steps. At first we derive a distribution function of copolymer chains with respect to composition and blockiness. Then we used the method of moments, which was developed by Sollich and Cates [Sollich, P.; Cates, M. E.; Phys. Rev. Lett. 1998, 80, 1365-1368] for polydisperse systems, to reduce the number of degrees of freedom of the computational problem and calculate phase diagrams. We explored how location of transition points and composition of coexisting phases depend on copolymer composition, blockiness and degree of polymerisation. The proposed approach allows to take into account fractionation, which was shown to have effect on the appearance of phase diagrams of statistical copolymers.
