The influence of transition metal salts on photo-oxidative degradation of poly(ethylene oxide)

Authors
Kaczmarek, H Sionkowska, A Kaminska, A Kowalonek, J Swiatek, M Szalla, A
Citation
H. Kaczmarek et al., The influence of transition metal salts on photo-oxidative degradation of poly(ethylene oxide), POLYM DEGR, 73(3), 2001, pp. 437-441
Citations number
15
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
POLYMER DEGRADATION AND STABILITY
ISSN journal
01413910 → ACNP
Volume
73
Issue
3
Year of publication
2001
Pages
437 - 441
Database
ISI
SICI code
0141-3910(2001)73:3<437:TIOTMS>2.0.ZU;2-F
Abstract
The influence of iron (III), cobalt (II) or nickel (II) chlorides on photo- oxidative degradation of poly(ethylene oxide) (PEO) has been investigated. The rates and efficiencies of photochemical reactions occurring in PEO cont aining small amounts (1-3%) of the transition metal chlorides were compared . The mechanism of reaction induced by UV-irradiation in doped PEO is discu ssed. The role of active Cl atoms and chlorine radical anion Cl-2(.-) (form ed in the first step of metal salt photolysis) in initiation of polymer deg radation is pointed out. The iron salt was found to be the most effective a gent accelerating PEO photodegradation. (C) 2001 Elsevier Science Ltd. All rights reserved.