The effect of the degree of hydrolysis of the PVA and the plasticizer concentration on the color, opacity, and thermal and mechanical properties of films based on PVA and gelatin blends - Maria, T. M. C.; Carvalho, Rosemary Aparecida de; Sobral, Paulo José do Amaral; Bittante, Ana Mônica Quinta Barbosa; Solorza-Feria, Javier (Journal of Food Engineering, 2008)