Theoretical and Experimental Studies of Phase Equilibrium in Fluids

本杰明·维多姆教授由理论和计算化学计划资助，负责对相分离的稀高聚物溶液进行理论和实验研究，特别是界面处的结构和聚合物构象。这一基础理论研究将有助于更好地理解聚合物溶液的性质，以及它们对组成溶液的聚合物的分子性质的依赖性。Widom已经证明，用于这些研究的理论模型等同于具有多体和远邻相互作用的Ising-Spin模型。对这种晶格微乳液模型的研究将侧重于广义的两亲-两亲相互作用、不对称状态以及相关函数、结构函数和散射函数。这些解决方案的理论研究将指向获得界面结构，包括界面中聚合物链几何形状的空间相关性。

Professor Benjamin Widom is funded by a grant from The Theoretical and Computational Chemistry Program to perform theoretical and experimental studies of phase-separated dilute high-polymer solutions, particularly the structure and polymer conformation at the interface. This fundamental theoretical research will lead to an improved understanding of the properties of polymer solutions, and their dependence on the molecular properties of the polymers which comprise them. The theoretical model used for these studies has been shown by Widom to be equivalent to the Ising-spin model with many-body and further-neighbor interactions. The proposed studies of this lattice microemulsion model will emphasize generalized amphiphile-amphiphile interactions, unsymmetrical states, and the correlation, structure, and scattering functions. The theoretical studies of these solutions will be directed toward obtaining the interfacial structure, including the spatial dependence of the polymer-chain geometry in the interface.