Equation-of-State Analysis of Miscible Blends of Copolymers

可混溶的聚合物共混物作为其聚合物组合物中的材料是令人感兴趣的。 和执行战略， 多相混合物 这项研究涉及的机会， 用于设计当一个或两个组分 是共聚物。 现代状态方程方法可能会 提供了一个合理的理论，可以从最小的预测， 信息. 这项研究整合了聚合物合成， 表征（分子，热，体积等），并仔细 相图确定到一个计划，允许计算 的相互作用能（剥离的复杂影响， 可压缩性），甚至 当它们强烈地抵抗混合时。 重点是各种 聚碳酸酯，由苯乙烯、甲基丙烯酸甲酯 甲基丙烯酸酯、丙烯腈和含有官能基 反应性单体 我们的目标是完善这一计划， 产生一个可靠的二元相互作用能矩阵， 允许从多组分精确设计混溶共混物 聚合物，并确定混合概念，将是有用的 特别是在反应性增容领域。 这项研究将有助于不断增长的聚合物混合物领域， 其越来越多地用作工程塑料， 也常见于回收塑料中。 更好地理解 这些用途背后的基本原理对于进一步 中求进工作总

Miscible polymer blends are of interest as materials in their own right and for implementing strategies for compatibilizing multiphase mixtures. This research deals with the opportunities for designing miscible polymer pairs when one or both components are copolymers. A modern equation-of-state approach is likely to provide a rational theory that can make predictions from minimal information. This research integrates polymer synthesis, characterization (molecular, thermal, volumetric, etc), and careful phase-diagram determination into a scheme that allows calculation of interaction energies (stripped of the complicating effects of compressibility) for various pairs of monomer repeat units, even when they energetically resist mixing. The focus is on a variety of polycarbonates, copolymers formed from styrene, methyl methacrylate, acrylonitrile, and polymers containing functionally reactive monomers. The goals are to perfect this scheme, to produce a reliable matrix of binary interaction energies that will allow accurate design of miscible blends from multicomponent polymers, and to identify blend concepts that will be useful especially in the area of reactive compatibilization. This research will help the growing field of polymer mixtures, which are increasingly being used as engineering plastics and are also commonly found in recycled plastics. A better understanding of the fundamentals underlying these uses is essential to further progress.