the mixture will exhibit two Tg and Tm corresponding to the two pure phases. It is unlikely to distinguish by DSC, individual first and second order endothermal peaks for composite polysaccharide films because of their close proximity; according to Olabisi, Robeson, and Shaw (1979), it is not possible to distinguish a phase separated system from a miscible one by DSC if the components Tg are less than 20 °C apart