Application of thermochemical methods for the study of cellulose and cellulose esters

In this research, the enthalpy of interaction cellulose and esters with various polar liquids was studied. Besides, standard enthalpies combustion formation its were determined. It shown that absolute value exothermic is an indicator accessibility supramolecular structure for these liquids. has been also established materials water, i.e., wetting enthalpy, directly proportional to content non-crystalline domains inversely degree crystallinity. case esters, characterizes their substitution hydrophobicity, which are higher, lower enthalpy. The determination melting heats crystallites carried out evaluate relative thermodynamic stability CI, CII, CIII, CIV crystalline forms amorphous cellulose. For cellulose, it increase in contributes enhancing formation; thus, esterification thermodynamically favorable.