The present study portrays a novel post‐processing treatment by using microwave radiations for enhancing mechanical properties of five commonly used engineering polymers, polyamide (PA), polybutylene terephthalate (PBT), polypropylene (PP), polycarbonate (PC), and acrylonitrile‐butadiene‐styrene (ABS). The analysis revealed that the crystal structures of the polymers improved after the treatment due to more favorable rearrangement of crystalline segments within the polymers. Furthermore, tensile properties and tribological performance of microwave‐treated polymers were found to be significantly better when compared to those of untreated counterparts. The tensile strength, elongation, and wear performance of PA increased by 51%, 286%, and 45%, respectively, only after a treatment of 20 s. A similar response was also exhibited by other polymers as well. It was noted that optimum time for microwave treatment can vary depending on different crystalline nature of the polymers. The degree of randomness in the molecular chains of semicrystalline polymers is less; thus, it requires less treatment time. However, for amorphous polymers, as randomness increases, more time is needed. As such, post‐processing microwave treatment of polymers has proven beneficial as a cost‐effective, time‐saving, and environment‐friendly technique for enhancing material properties significantly.
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