Solubility parameters of poly(4‐substituted α‐acetoxystyrenes) and alternating copolymers of vinylidene cyanide with substituted styrenes

Abstract

AbstractThe δ solubility parameters of three families of polymers have been determined by two calculation methods suggested by Small and Hoy. Hansen's model has also been used to assess δ and its components δd0, δp0, and δh0, so as to obtain more information on the intensity of the forces between the chain segments. Knowing the microstructure, the tacticity, and the thermal behavior of the copolymers has made it possible to explain both the different values of δ and the progression of solubility areas. Using Teas' method has made it possible to visualize on the same map the influence of the forces of interaction. This representation shows that the presence of the vinylidene cyanide unit in styrenic chains implies an increase of δp and a decrease of δd, whereas δh remains roughly constant for the corresponding homopolymer. © 1994 John Wiley & Sons, Inc.