Outdoor ageing of ethylene–carbon monoxide alternating copolymer

The outdoor ageing of ethylene–carbon monoxide alternating copolymer films, has been investigated by thermal analysis, infrared spectroscopy and scanning electron microscopy (SEM). Samples exposed to the sun light, in open air, for times ranging from 0 to 480 h have been investigated. After 480 h of...

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Bibliographic Details
Published in:Polymer degradation and stability 2000-01, Vol.69 (2), p.133-142
Main Authors: Severini, F., Gallo, R., Brambilla, L., Castiglioni, C., Ipsale, S.
Format: Article
Language:English
Subjects:
Ageing
Aliphatic polyketones
Applied sciences
Exact sciences and technology
Outdoor ageing
Photodegradation
Physical properties
Polymer industry, paints, wood
Properties and testing
Technology of polymers
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Summary:The outdoor ageing of ethylene–carbon monoxide alternating copolymer films, has been investigated by thermal analysis, infrared spectroscopy and scanning electron microscopy (SEM). Samples exposed to the sun light, in open air, for times ranging from 0 to 480 h have been investigated. After 480 h of exposure polymer films break spontaneously. Infrared spectroscopy indicates that the degradation takes place with formation of new chemical species that contain ether linkages. Moreover thermal measurements clearly indicate that an etherogeneous system is formed as a consequence of degradation. Both infrared and SEM evidence indicates that the photodegradation process is confined to a thin layer near the exposed surface of the samples.
ISSN:0141-3910
1873-2321
DOI:10.1016/S0141-3910(00)00051-3