Thermal and calorimetric analysis of cellulose, its derivatives and their mixtures with plasticizers

The heat capacity and physical transitions of cellulose with different crystallinity degree, its derivatives (acetates, nitrates, acetobutyrate and ethyl cellulose) as well as their mixtures with plasticizers (esters of phthalic acid, triacetin, oligoethylenebutylene glycol adipinate, castor oil and butylstearate) have been studied in the range 4 to 600 K by DTA and vacuum adiabatic calorimetry. The diagrams of physical states in binary systems polymer - plasticizer were constructed from data on concentration dependences of the temperatures of relaxation and phase transitions in the systems studied and on the solubility of plasticizer in polymer.