Photo=oxidative degradation of poly(epichlorohydrin-co-ethylene oxide) elastomer at 254 nm

摘要

The photo-degradation of unstabilised poly(epichlorohydrin-co-ethylene oxide) was evaluated under accelerated ageing condi- tions by infrared spectrophotometry (FTIR), gel permeation chromatography (GPC) and scanning electron microscopy (SEM). The elastomer photo-degradation leads to the formation and increase of carbonyl containing products, hydroxyl ad hydroper- Oxide groups. FTIR spectra after elastomer photo-degradation and derivatization in an inert atmosphere, indicate that hydroper- Oxides are the first products of the photo-oxidation and their photolysis produces carbony-containing products.