Abstract
Viscometric interaction parameters between pairs of homopolymers or an acidic and a basic copolymer in dioxane were determined by two procedures: (a) determination of the intrinsic viscosity of polymer (A) in dilute dioxane solutions of polymer (B) at 30°; (b) determination of the Huggins constants for 1:1 mixtures of polymers at 50°. The Δb 23 values obtained by these methods were different but positive and they increased from the most incompatible to the completely compatible system. Non-linear relations were found for the Huggins constant vs temperature and the intrinsic viscosity vs composition.
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