Mechanical degradation of polymer nanocomposites

Polymer nanocomposites (PNCs) signify a notable progression in the field of materials science and engineering, processed by the incorporation of nanoscale fillers into a polymer matrix to improve mechanical, thermal, and barrier properties for a wide range of applications. Nevertheless, their efficacy is often hindered by mechanical degradation, resulting from factors such as stress and environmental influences. The primary mechanisms of mechanical degradation identified include fatigue, wear, and environmental stress cracking, which contribute to diminished mechanical strength, thermal stability, and overall durability. This study emphasizes that the introduction of novel nanofillers and sophisticated processing methods has led to enhanced mechanical stability in PNCs, particularly with hybrid nanocomposites exhibiting significant improvements in tensile strength and impact resistance. Despite these advancements, challenges persist, including issues related to material processing techniques, nanoparticle dispersion, and interfacial adhesion. A comprehensive understanding of these degradation mechanisms and their interactions with material properties is crucial for the development of robust PNCs that can satisfy the increasing demands in automotive, aerospace, biomedical, and environmental applications.