**5. Conclusions**

In this paper, a comparison between conventional PC and two grades of PCR (50 and 75%) were conducted in terms of the effects of various aging strategies on mechanical strength and fractography. Unaged samples for all three grades with MFR of 10 g/10 min showed comparable strength (67–70 MPa) and the fracture surfaces of conventional and 50% PCR grades indicate ductile failures. As the MFR was increased from 10 to 15 g/10 min, strength is reduced, which is expected in any polymer resin. After thermal cycling at -20o to 60o C, no degradation was observed, whereas after high temperature and high humidity aging (60°C 90%RH) - strength reduction was observed and the degradation was consistent for all the three grades. This can be attributed to the degradation due to environmental aging. In fractography comparison between unaged and aged samples for both conventional PC (white resin) and 75% PCR (black resin), it was also observed that ductile features were less in aged samples. Overall, no significant differences were found between virgin PC and post-consumer recycled PC which indicates that recycled PC can be used in consumer hardware if molding conditions are controlled.
