Time dependent properties of polymer blends and composites: A Review

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Chinese explanation / 中文解读

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Original abstract

Abstract Polymer stability and degradation is highly crucial for polymeric materials when used in outdoor application in civil engineering, aerospace and automotive. Degradation of polymer composites and blends over time, particularly under accelerated aging including UV irradiation, temperatures, humidity exhibited heterogeneous oxidation. Functionality and performance of both natural and synthetic polymers are inherently affected by time and significantly changes as a result of numerous variables. These consist of their mechanical characteristics, thermodynamic behavior, molecular structure and environmental factors like humidity, temperature and UV exposure. Overall mechanical strength, elasticity, and thermal stability may be threatened by such time-dependent changes. Because they are made up of recurring monomer units and macromolecules with variable chain lengths especially vulnerable to structural deterioration from outside influences. Over time, this deterioration shows up as variations in stress, strain, viscoelasticity and other important characteristics. The dynamic behavior of polymers is examined in this review paper, with a focus on how aging and environmental conditions affect the mechanical, thermal, optical, and surface characteristics of polymers. The cutting-edge methods for reducing degradation, understanding these time-dependent phenomena, researchers and industries can develop robust polymer systems with extended lifespans, tailored for specific applications in demanding environments. However, the necessity of aligning polymer science with sustainable practices to address future industrial and environmental challenges.

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