Phase equilibria in ternary systems containing a solvent a linear polymer, and a crosslinked polymer

The equilibrium compositions of gels obtained by swelling crosslinked poly(vinyl acetate) of each of the following solutions, at various concentrations, were determined: linear low‐polymeric poly(vinyl acetate) in ethyl acetate, linear low‐polymeric poly‐(methyl acrylate) in ethyl acetate, linear low‐polymeric polystyrene in benzene. From these data, the interaction parameters χ ij for pairs of the components were deduced and compared with each other and with comparable constants from the literature.