Volatiles release from photodegrading, pigmented PVC: kinetic changes

Citation
Dj. Carlsson et al., Volatiles release from photodegrading, pigmented PVC: kinetic changes, POLYM DEGR, 62(3), 1998, pp. 413-419
Citations number
18
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
POLYMER DEGRADATION AND STABILITY
ISSN journal
01413910 → ACNP
Volume
62
Issue
3
Year of publication
1998
Pages
413 - 419
Database
ISI
SICI code
0141-3910(1998)62:3<413:VRFPPP>2.0.ZU;2-8
Abstract
Volatile species produced during the ultraviolet irradiation of a rigid, po ly(vinyl chloride) construction panel have been established as a function o f irradiation time. Residual organic and chloroorganic compounds were detec ted in the polymer surface after irradiation. Similar species are also dire ctly released during irradiation. In both cases, these were identified and quantified by gas chromatography, with mass spectrometry detection. Rates o f volatilisation of organic and chloroorganic compounds were measured direc tly during accelerated exposure conditions and dropped sharply with irradia tion time. This drop may be attributable to the cross-linking of the irradi ated surface which becomes chlorine deficient and rich in titanium dioxide pigment (rutile). In contrast, samples exposed to sunlight did not undergo surface cross-linking but did thermally desorb volatiles similar to laborat ory exposed samples. Crown copyright (C) 1998 Published by Elsevier Science Limited. All rights reserved.