Photodegradation and Photostabilization of Coatings: Based on a Symposium Sponsored by the Division of Organic Coatings and Plastics Chemistry at the 179th Meeting of the American Chemical Society, Houston, Texas, March 26-28, 1980Socrates Peter Pappas, Field Howard Winslow, American Chemical Society. Division of Organic Coatings and Plastics Chemistry |
Contents
Photoenolization in Polymers | 19 |
Mechanisms of Photodegradation of Ultraviolet Stabilizers | 27 |
Polypropylene Photostabilization by Tetramethylpiperidine Species | 51 |
Copyright | |
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1981 American Chemical absorbance absorption acid addition alkyl anatase Appl atom benzene benzophenone carbamate carbonyl CH=CH CHâ‚‚ chain Chem chloride chromophore coatings concentration copolymer crosslinking deactivation decomposition decrease degraded PVC dehydrochlorination derivatives DiPK effect electron Elvacite emission energy transfer ethanol excited Figure fluorescence formation hindered amines hydrogen hydroperoxide increase initial intensity irradiation ketone light Macromolecules Makromol measurements mechanism methacrylate methyl group molecular weight molecule nitroxide observed oxidation oxygen peroxide PFEMA phenolic phosphorescence photo-Fries photoactivity photochemical photochemistry photodegradation photolysis photooxidation Photostabilization piperidine PMMA polyene polyene sequences polymerization presence proton PVCa quantum yields quenching radiation radicals reaction rutile samples Scheme scission sensitivity shown singlet solubility solution solvent spectra spectrum studies Table temperature terephthalate thermal thickness Ti-Pure TiO2 tion titanium dioxide Titanox triplet ultraviolet UV exposure UV screening wavelength weathering X-ray yarns Zinc