Study of Thermal Oxidative Polymerization of Trioleolylglycerol by Vacuum Thermal Gravimetric Analysis

Abstract

The thermal oxidative polymerization and degradation of thin films of trioleoylglycerol (TOG) under an air were investigated by vacuum thermogravimetric analysis (VTGA) using dynamic thermal programs.The following results were obtained : 1) The logarithmic initial rate of the thermal oxidative polymerization of TOG was in proportion to the recipocal of the absolute temperature of the reaction. From Arrhenius plots, apparent activation energies were 29 and 9 kcal/mol at 80°C to 130°C and 140°C to 230°C, respectively.2) The composition of the thermal oxidative polymer of TOG was determined from a curve of the rate of weight loss from 270°C to 450°C.3) The relationship between logarithmic initial rate of thermal oxidative degradation and reciprocal of the reaction temperature of TOG could be expressed as an expression of proportion.