Abstract
The photo-degradation of carbon tetrachloride (CCl 4)-doped polystyrene film has been investigated by ultraviolet (uv) and Fourier transform infrared (FTIR) spectroscopic techniques and by gel and viscosity measurements. On photo-irradiation of CCl 4-doped polystyrene film, the amount of oxygenated products and unsaturation increased with the concentration of carbon tetrachloride up to 5 mol%. Changes in gel fraction and number of chain scissions showed a similar trend to those of the amount of oxygenated products and unsaturation. These experimental results show that the degradation of polystyrene is photo-sensitized by added carbon tetrachloride. A possible mechanism for the photo-degradation of CCl 4-doped polystyrene is proposed.
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