Beilstein J. Org. Chem.2013,9, 1907–1916, doi:10.3762/bjoc.9.225
polymers, the mechanism of their degradation upon exposure to environmentaloxidants is barely understood. In this work, model systems of important structural motifs in commercial high-performing polyesters were used to study the reaction with the night-time free radical oxidant NO3• in the absence and
well as products of these reactions are potentially capable of promoting further degradation processes in polyesters under environmental conditions.
Keywords: environmentaloxidants; free radicals; nitrate radicals; polyester degradation; product studies; reaction mechanisms; Introduction
Polymers
•, O2 and O3. This work not only reveals new insight into the degradation mechanism in polyesters upon exposure to important environmentaloxidants, but it also enables identification of vulnerable sites (‘hot spots’) in the polymer, which could open up new pathways to polyester degradation under
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Graphical Abstract
Scheme 1:
Generation of NO3• (a) in the atmosphere, (b) under experimental conditions.