Kinetic study of thermal degradation of guar gum esters

Abstract

The guar gum esters were synthesized by reacting guar gum with various anhydrides. The degree of substitution of guar gum esters was estimated. The thermal degradation of guar gum and its esters in the presence of air was examined by thermogravimetry to ascertain their relative thermal stabilities on the basis of various temperature parameters. The experiments were carried out at a heating rate of 10 °C min −1 in the range 25–550 °C.