Thermal Stability and Decomposition Mechanism of Organic Peroxide Initiators in Polymer Processing Systems

Abstract

Organic peroxide initiators are widely utilized in polymer processing systems for applications such as polymerization, crosslinking, curing, and modification of polymeric materials. However, their high reactivity and thermal sensitivity present significant challenges related to process safety, storage stability, and controlled reaction performance. The present study investigates the thermal stability and decomposition mechanism of organic peroxide initiators under conditions relevant to industrial polymer processing operations. The research focuses on evaluating decomposition kinetics, heat release characteristics, activation energy, and radical generation behavior associated with commonly used organic peroxide compounds. Experimental analysis was conducted using thermal characterization techniques to examine the influence of temperature, heating rate, pressure, and processing environment on peroxide decomposition and stability. Results demonstrate that elevated temperatures significantly accelerate peroxide bond cleavage and free radical formation, leading to rapid exothermic decomposition and potential thermal runaway conditions. The study further reveals that the molecular structure and concentration of organic peroxide initiators strongly influence decomposition pathways and thermal resistance. Kinetic modeling indicates that controlled operating conditions and optimized processing temperatures improve initiator stability while maintaining effective polymerization performance. Comparative assessment with conventional initiation systems confirms the advantages and limitations of organic peroxide compounds in terms of reaction efficiency, thermal behavior, and operational safety. In addition, the findings highlight the importance of proper thermal management, storage conditions, and hazard assessment for minimizing risks associated with peroxide handling in industrial polymer manufacturing environments.