Melting temperature of thermally reversible gel. V. Heat of fusion of cellulose triacetate and the melting of cellulose diacetate–benzyl alcohol gel

Abstract

The heat of fusion of cellulose triacetate was determined from the melting point depression to be 2360 cal mol-1 (9.87 kJ mol-1). The melting temperatures of thermally reversible gels of cellulose acetate in benzyl alcohol were measured over a range of polymer concentrations. The reciprocal of the gel melting temperature vs. In v2xw plot is linear, where v is the polymer volume fraction in the gel and xW is the weight-average degree of polymerization. The plot was analysed according to the thermodynamic theory of the melting of a gel and the crosslinking loci in the gel were inferred to be crystallites consist of triacetyl glucose units. © 1979, The Society of Polymer Science, Japan. All rights reserved.