Degradation of ROMP-based bio-renewable polymers by UV radiation

TitleDegradation of ROMP-based bio-renewable polymers by UV radiation
Publication TypeJournal Article
Year of Publication2013
AuthorsCui HY, Hanus R, Kessler MR
Journal TitlePolymer Degradation and Stability
Volume98
Pages2357-2365
Date Published11
Type of ArticleArticle
ISBN Number0141-3910
Accession NumberWOS:000327908800030
KeywordsAuto-oxidation, behavior, Bio-renewable, films, MECHANISMS, oil, opening metathesis polymerization, oxidation, Photo-degradation, polyethylene, polypropylene, PROFILE, transform-infrared-spectroscopy, UV degradation
Abstract

The degradation of a bio-renewable polymer under UV exposure was studied using various methods. Degradation of the bio-renewable polymer increased with increasing exposure time. Enhanced cross-link density in the early stage of degradation was confirmed by Soxhlet extraction. Tensile testing showed a transition from ductile failure to brittle fracture. Surface cracks and embrittlement were primary reasons for most reductions in mechanical properties, such as tensile strength and breaking strain. The effects of degradation were confined to the surface of thick bio-based polymer specimens, confirmed by both SEM and PAS-FTIR. Depth profile studies of degraded samples showed that the concentration of oxidation products, such as hydroxyl and carbonyl groups, varied with depth depending on the diffusion of oxygen. (C) 2013 Elsevier Ltd. All rights reserved.

URL<Go to ISI>://WOS:000327908800030
DOI10.1016/j.polymdegradstab.2013.08.003