Photochemistry of Man-made Polymers |
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absorbed absorption band absorption spectrum acid actinometer American Cyanamid anatase antioxidant Appl aromatic benzophenone Carbonyl index CARLSSON CH₂ CH₂-C CH₂CI CH3 CH3 chain scission chelates Chem Chemical chromophore commercial polymers complex concentration crosslinking Cyasorb degradation dehydrochlorination effect energy Ethyl Corporation excitation exposure filter fluorescence formation formed hydrogen atoms hydroperoxide hydroperoxide groups hydroxyl infrared intensity irradiation John Wiley ketone light stabilisers luminescence Makromol mechanism molecular molecule N. S. and MCKELLAR Ni(II nm FIG Norrish nylon O₂ occur oxidation Pergamon Press Ltd permission from John permission from Pergamon peroxide phosphorescence phosphorescence emission photochemical Photochemistry photodegradation photolysis photooxidation photosensitised photostabilisation pigments Plast plastics poly(vinyl chloride polyethylene Polym polyolefins polypropylene polypropylene film polystyrene potassium ferrioxalate quenching radiation radicals Reproduced from Allen salicylate sample shown in Fig spectroscopy structure sunlight Table temperature thermal triplet type-I ultraviolet ultraviolet absorption Uvinol wavelength weathering weatherometer Wiley & Sons