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Surface photostabilization of polystyrene by Tinuvin 1577

โœ Scribed by Francesco A. Bottino; Giovanna di Pasquale; Antonino Pollicino; Antonino Recca

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
174 KB
Volume
69
Category
Article
ISSN
0021-8995

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โœฆ Synopsis

The effect of a new hydroxyphenyltriazine additive (Tinuvin 1577) on the surface photooxidation of polystyrene films at various concentrations of the additive was studied using ESCA spectroscopy. The accelerated weathering was run in a Xenotest apparatus to mimic outdoor conditions. The presence of Tinuvin 1577 effectively inhibited the surface photooxidation of polystyrene.

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โœ Ursula Meyer; Wolfgang Kern; Maria F. Ebel; Robert Svagera ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 81 KB ๐Ÿ‘ 1 views

The surface of polystyrene was modified by the introduction of CN groups. This was achieved by irradiating the polymer with UV light (254 nm) in the presence of gaseous cyanogen bromide (BrCN). X-ray photoelectron spectroscopy (XPS) and FTIR analysis showed that after irradiation both Br and CN grou