Abstract
Polyphosphates have been used as polystyrene photostabilizers against ultraviolet irradiation for long period. The efficiency of polyphosphates was herein evaluated by the use various techniques that include determination of the weight loss, average molecular weight, chain-scission, and degree of deterioration, in addition to infrared spectroscopy of the polystyrene films following irradiation for up to 300 h at room temperature. The results showed that the addition of polyphosphates at low concentrations significantly enhanced the photostability of polystyrene. In addition, the surface morphologies of the polystyrene films were inspected by the use of optical, atomic force, and scanning electron microscopy. The surfaces of the polyphosphate-containing polystyrene films were significantly smoother and contained lower numbers of cracks compared to the blank films. Furthermore, the polyphosphate bearing ortho substituents was the most effective photostabilizer. Scanning electron microscopy of the polystyrene film containing this polyphosphate showed that after 300 h of irradiation, ball-like pores of varying diameters (3.25–4.26 μm) and shapes (ellipsoid and sphere) were present.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
