Photochemical processes involving TiO2 pigments and TiO2–light stabilizer combinations in commercial polyolefins
- 1 October 1975
- journal article
- research article
- Published by Wiley in Journal of Polymer Science: Polymer Chemistry Edition
- Vol. 13 (10) , 2319-2325
- https://doi.org/10.1002/pol.1975.170131013
Abstract
The photoactivity of titania pigments at different loadings in both polyethylene and polypropylene is examined by phosphorescence and carbonyl formation and a correlation between the two observed. A nickel (II) chelate stabilizer proved more effective than a hydroxybenzophenone stabilizer in the presence of anatase. This difference in stabilizing efficiency appears to be due to more efficient quenching of the excited state of the anatase by the nickel chelate than by the hydroxybenzophenone.Keywords
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