ABSTRACT

This chapter provides data pertaining to the liquid molar volumes and solubility parameters of selected organic compounds that were deemed particularly appropriate as models for polymeric materials, from the data bank compiled by Daubert and Danner at Penn State University. It chapter shows that by making informed guesses concerning the magnitude of the ΔGH specific interaction term we can obtain a good qualitative understanding of the miscibility of most polymer blend systems. The molar attraction constants are determined from experimental values of the solubility parameters of the model liquids multiplied by their respective molar volumes. In order to arrive at a simple predictive scheme there are therefore two major factors that we must consider as a function of copolymer composition: the variation of the non-hydrogen bonded solubility parameter difference and the type, number and relative strength of the intermolecular interactions that may be present.