Journal of Materials, Processes and Environment
Volume 5, Numéro 1, Pages 63-70

Uv Radiations Effects On The Mechanical And Physicochemical Properties Of A Polycarbonate

Authors : Redjala Sonya . Ferhoum Rabah . Azem Said . Ait Hocine Nourredine .


▬ This work is devoted to the experimental study of UV irradiation effects on the microstructure and mechanical behavior of a polycarbonate (PC). Simple compression tests, X-ray diffraction, Scanning Electron microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR) were carried out in order to characterize the response of the specimens material before and after UV irradiation with a wavelength of 253 nm at room temperature and for several maintained durations of 72, 144 and 216 hours. These investigations showed a decrease of the intrinsic properties of polycarbonate (Young modulus, yield stress, etc.). The superposition of spectra FTIR shows that the intensity of chemical connections is influenced by the duration of UV irradiation; in addition, an increase of diffractogram peaks intensity of the samples after 216 hours of ageing has been noticed. Our objective in this work is to find correlations between the time of maintenance, microstructure and mechanical properties of our materials


Amorphous polymer; polycarbonate; UV irradiation; photo-degradation