Specific Interactions in Polymer Systems

在之前的工作中，该小组开发了一个描述聚合物中氢键相互作用的模型。在这一点的实验研究中，该小组已经成功地测试了该模型预测各种系统相行为的广泛趋势的能力。在将要进行的研究中，将尝试对这种方法的有效性程度进行更定量的研究。这项工作将包括：a)调查我们需要在多大程度上考虑“免费卷”；b)精心挑选的共聚物体系的FTIR研究；c)在一种组分结晶的混合物中熔点降低的研究；d)散射研究，与NIST的Charles Han博士合作。长期目标是了解和预测涉及强定向特异性相互作用的聚合物混合物的相行为。

In previous work, this group has developed a model that describes hydrogen bonding interactions in polymers. In experimental studies to this point, the group has successfully tested the ability of this model to predict broad trends in the phase behavior of various system. In the research to be carried out, an attempt will be made to develop a much more quantitative study of the degree of validity of this approach. The work will include: a) An investigation of the extent to which we need to account for "free volume"; b) FTIR studies of carefully selected copolymer systems; c) Studies of melting point depression in blends where one component crystallizes; d) Scattering studies, in collaboration with Dr. Charles Han of NIST. The long-term goal is to understand and predict the phase behavior of polymeric mixtures that involve strong directionally specific interactions.