Damage of polyesters by the atmospheric free radical oxidant NO3 (•): a product study involving model systems.

ABSTRACT: Manufactured polymer materials are used in increasingly demanding applications, but their lifetime is strongly influenced by environmental conditions. In particular, weathering and ageing leads to dramatic changes in the properties of the polymers, which results in decreased service life and limited usage. Despite the heavy reliance of our society on polymers, the mechanism of their degradation upon exposure to environmental oxidants 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 presence of other radical and non-radical oxidants. Identification of the products revealed 'hot spots' in polyesters that are particularly

SUBMITTER: Goeschen C 

PROVIDER: S-EPMC3817593 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature