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We have examined the effect of two different classes of photostabilizers, UV absorber and hindered amine light stabilizer (HALS) on Nylon 66 to prevent the photo-oxidation of the polymer matrix and colour fading of the dye. Acid blue dyes, UV absorber and HALS were observed to impart photostability to Nylon 66. UV absorber and HALS showed photostability directly proportional to their relative concentration...
The photo-oxidative degradation study of nylon 66 was carried out in a polychromatic irradiation chamber (Sepap 12/24, λ =< 290 nm) at 60 o C in air. The extent of photo-oxidation was monitored by Fourier transform infrared spectrometry. The sample underwent extensive changes in hydroxyl, carbonyl and amorphous region of infrared upon irradiations. The photo-products were characterized...
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