The glass transition temperatures (Tgs) of binary blends of poly(p-vinyl phenol) with poly(methyl methacrylate), poly(ethyl methacrylate) and poly(ethyl methacrylate-co-methyl methacrylate) have been determined. The experimental T~-composition data do not obey the Couchman-Karasz equation. However, the Gordon-Taylor, the Kwei and the Schneider equations fit the experimental data quite well. The values of the Gordon Taylor k parameters, as well as the measurements of the glass transition widths, suggest a similar average intensity of the specific intermolecular interactions in the systems studied here, which is in agreement with the Fourier transform infra-red results. The Kwei and the Schneider equations are able to reflect the additional stabilization due to the dilution of copolymer repulsive interactions in the poly(p-vinyl phenol)/poly(ethyl methacrylate-co-methyl methacrylate) blends
Посилання на статтю:
Glass transition behaviour and interactions in poly(p-vinyl phenol)/polymethacrylate blends / J. A. Pomposo, I. Eguiazabal, E. Calahorra and M. Cort&zar // Polymer. – 1993. – Vol 34. – P. 95-102.