Comparison of isothermal and non-isothermal chemiluminescenceand differential scanning calorimetry experimentswith benzoyl peroxide

摘要

Difference in the kinetics of chemiluminescence (CL) and differential scanning calorimetry recordsfor decomposition of originally solid benzoyl peroxide continuing as a melt reaction was outlined.While the main portion of heat measured by DSC is released in the spontaneous decompositionof benzoyl peroxide starting as a homolytic scission of peroxidic bonds, the CL light emission inoxygen comes presumably from the subsequent disproportionation reaction of polyphenyl peroxylradicals and monitors the induced decomposition of peroxide. Thermogravimetry revealed thatoxygen remains partially bound to the products of benzoyl peroxide decomposition.