UV Aging Effects on Polycarbonate Properties

UV Aging Effects on Polycarbonate Properties

This work deals with the effects of ultraviolet (UV) aging on polycarbonate (PC) properties. Thus, a PC was subjected to accelerated UV radiation with a wavelength range from 200 to 280 nm, at different times. Induced changes in the material were studied by UV–visible spectrophotometry, Fourier tran...

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Bibliographic Details
Published in:Journal of failure analysis and prevention Vol. 20; no. 6; pp. 1907 - 1916
Main Authors: Redjala, S., Aït Hocine, N., Ferhoum, R., Gratton, M., Poirot, N., Azem, S.
Format: Journal Article
Language:English
Published: Materials Park Springer Nature B.V 01-12-2020
Springer Verlag
Subjects:
Aging
Cracks
Engineering Sciences
Fourier transforms
Infrared analysis
Infrared spectrophotometers
Infrared spectroscopy
Materials and structures in mechanics
Mechanical properties
Mechanics
Mechanics of materials
Microhardness
Optical microscopy
Polycarbonate resins
Scanning electron microscopy
Spectrophotometry
Tension tests
Ultraviolet radiation
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Summary:This work deals with the effects of ultraviolet (UV) aging on polycarbonate (PC) properties. Thus, a PC was subjected to accelerated UV radiation with a wavelength range from 200 to 280 nm, at different times. Induced changes in the material were studied by UV–visible spectrophotometry, Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction. The material surface was analyzed by optical microscopy (OM) and scanning electron microscopy (SEM). Microhardness and uniaxial tension tests were performed on the aged and no-aged materials. It appeared that the studied PC turns yellow with UV aging time, in agreement with UV–visible spectrophotometry results that highlighted a loss in transparency of the aged material. The microhardness measurements showed that PC samples were entirely affected by UV radiations. In addition, the material performances in uniaxial tension dropped with UV aging. The decrease in PC mechanical properties was related to the rupture of the most vulnerable bonds, revealed by FTIR analyses, and to superficial cracks showed by OM and SEM micrographics.
ISSN:1547-7029
1864-1245
5555-1313
DOI:10.1007/s11668-020-01002-9