THERMOGRAVIMETRIC PROPERTIES OF INCLUSION COMPLEXES OF BETA-CYCLODEXTRIN WITH BENZENE, ACETYLSALICYLIC-ACID AND METHYL SALICYLATE

This paper reports TG analyses of inclusion complexes of beta-cyclodextrin with benzene, acetylsalicylic acid and methyl salicylate. The data were used for calculation of the compositions of the three body complexes and the apparent kinetic parameters of the thermal decompositions. Water exclusion proceeds as a reaction with order n = 1 and an activation energy about 20 kJ/mol. The expulsion of aromatic guest molecules follows an n = 1 order process with the activation energy above 155 kJ/mol, except that for the methyl salicylate complex, which was found to be ca. 64 kJ/mol.