| dc.contributor | Rodr�guez-Castro, M., Departamento de Qu�mica, Universidad de Guadalajara, Boul. M. Garcia Barragan No. 1451, Guadalajara, Jal. 44430, Mexico; Cesteros, L.C., Grupo de Nuevos Materiales y Espectroscopia Supramolecular, Departamento de Qu�mica F�sica, Universidad del Pa�s Vasco, Apartado 644, Bilbao 48990, Spain; Katime, I., Grupo de Nuevos Materiales y Espectroscopia Supramolecular, Departamento de Qu�mica F�sica, Universidad del Pa�s Vasco, Apartado 644, Bilbao 48990, Spain; Nu�o-Donlucas, S.M., Departamento de Ingenier�a Qu�mica, Universidad de Guadalajara, Boul. M. Garcia Barragan No. 1451, Guadalajara, Jal. 44430, Mexico | |
| dc.description.abstract | An analysis by differential scanning calorimetry, modulated differential scanning calorimetry, and Fourier transform infrared spectroscopy (FTIR) indicates that blends of poly(vinyl phenyl ketone) (PVPhK) and poly(4-vinyl phenol) (P4VPh) are miscible at ambient temperature. Miscibility, ascertained, is supported by the existence of a single glass transition for each composition of the PVPhK/P4VPh blends. The FTIR spectroscopy analysis demonstrates the formation of hydrogen bonds between carbonyl groups of PVPhK and hydroxyl groups of P4VPh. This specific interaction has a crucial role on the miscibility behavior of PVPhK/P4VPh blends. The evolution of the glass transition of the PVPhK, P4VPh, and its blends as a function of mixture composition shows negative deviations with to respect to the ideal mixing rule, and both Fox and Gordon-Taylor equations predict this behavior successfully. � 2006 Wiley Periodicals, Inc. | |
