天美传媒

Abstract

Polymer networks play a critical role in various applications due to their mechanical properties, particularly their relaxation behavior under low-tension conditions. This study investigates the relaxation processes in low-tension polymer networks with diverse chemical compositions, emphasizing the impact of different monomers, cross-linking agents, and additives on mechanical performance. The unique characteristics of acrylic, styrenic, and elastomeric polymer networks are analyzed to understand how their chemical structures influence viscoelastic relaxation, entropic relaxation, and reptation mechanisms. Experimental techniques such as dynamic mechanical analysis (DMA), rheometry, differential scanning calorimetry (DSC), and nuclear magnetic resonance (NMR) are employed to study these processes. The findings highlight the importance of chemical composition in designing polymer networks with tailored relaxation properties, offering insights for applications in biomedical devices, flexible electronics, and smart materials. This research underscores the potential for innovative material design by manipulating the chemical architecture of polymer networks to achieve desired mechanical behaviors.