Thermal aging effect on the mechanical behavior of polycarbonate: Experimental and modeling

Polycarbonate (PC) was subjected to thermal aging at different hold time. The temperature leads to surface cracking and damage in the structure which directly influences the mechanical response of the polymer. A spectroscopy FTIR characterization and compression behavior of PC after annealing for 72,144 and 216 h at 100 degrees C were investigated. A decrease in Young's modulus, elastic limit and resistance at break of PC was noted. Infrared spectroscopy analysis (FTIR) shows a decrease of intensity of all of chemical links of polycarbonate (Co, CH3, C=C and CH). Secondly, a MIRKHALAF phenomenological model was selected and modified. Ageing effects are incorporated into the constitutive model by introducing a physical ageing function. The computational treatment and the theoretical basis of the material model and are presented. Good concordances between the experimental and numerical results are observed. Copyright (c) 2022 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the Polymer & Mediterranean Fiber International Conference'2021.