THE INFLUENCE OF CHEMICAL COMPOSITION ON THE THERMAL STABILITY OF POLYMERIC MATERIALS

Abstract

Thermal stability is one of the most critical performance characteristics of polymeric materials, determining their applicability in engineering, industrial, and high-temperature environments. The chemical composition of polymers plays a decisive role in governing their resistance to thermal degradation, structural decomposition, and loss of mechanical properties under elevated temperatures. This article presents a comprehensive scientific analysis of how the chemical structure, molecular architecture, bonding energy, and the presence of functional groups influence the thermal stability of polymeric materials. Special attention is given to the role of backbone structure, side-chain chemistry, crosslinking density, copolymerization, and the incorporation of additives such as stabilizers, fillers, and flame retardants. The methodological framework of the study is based on comparative analysis of experimental thermal analysis techniques, including thermogravimetric analysis and differential scanning calorimetry, supported by theoretical interpretations rooted in polymer chemistry and materials science. The relevance of the topic is justified by the growing demand for thermally stable polymers in aerospace, electronics, construction, and energy sectors. The article identifies key challenges related to thermal degradation mechanisms and proposes scientifically grounded solutions and recommendations for improving thermal resistance through rational chemical design. The findings contribute to the advancement of polymer science by providing a holistic understanding of the chemical factors that control thermal stability and by offering practical guidelines for the development of high-performance polymeric materials.