A green approach towards adoption of chemical reaction model on 2,5-dimethyl-2,5-di-(tert-butylperoxy)hexane decomposition by differential isoconversional kinetic analysis

This study investigated the thermal degradation products of 2,5-dimethy1-2,5-di-(tert-butylperoxy) hexane (DBPH), by TG/GC/MS to identify runaway reaction and thermal safety parameters. It also included the determination of time to maximum rate under adiabatic conditions (TMRad) and self-accelerating decomposition temperature obtained through Advanced Kinetics and Technology Solutions. The apparent activation energy (E-a) was calculated from differential isoconversional kinetic analysis method using differential scanning calorimetry experiments. The E-a value obtained by Friedman analysis is in the range of 118.0-149.0 kJ mol(-1). The TMRad was 24.0 h with an apparent onset temperature of 82.4 degrees C. This study has also established an efficient benchmark for a thermal hazard assessment of DBPH that can be applied to assure safer storage conditions. (C) 2015 Elsevier B.V. All rights reserved.