Characterization of the moisture absorption and thermal ageing behaviour of polymeric composite systems using Raman spectroscopy

Otieno-Alego, V, Creagh, D, Jar, B, Fox, B and Lowe, A 1999, Characterization of the moisture absorption and thermal ageing behaviour of polymeric composite systems using Raman spectroscopy, in Ageing Studies and Lifetime Extension of Materials : Proceedings of the First International Conference on Ageing Studies and Lifetime Extension of Materials, held July 12-14, 1999 at St Catherine's College, Oxford, UK, Kluwer Academic/Plenum Publishers, New York, N. Y., pp. 113-121.


Title Characterization of the moisture absorption and thermal ageing behaviour of polymeric composite systems using Raman spectroscopy
Author(s) Otieno-Alego, V
Creagh, D
Jar, B
Fox, B
Lowe, A
Conference name International Conference on Ageing Studies and Lifetime Extension of Materials (1st : 1999 : St. Catherine's College)
Conference location Oxford, England
Conference dates 12-14 Jul. 1999
Title of proceedings Ageing Studies and Lifetime Extension of Materials : Proceedings of the First International Conference on Ageing Studies and Lifetime Extension of Materials, held July 12-14, 1999 at St Catherine's College, Oxford, UK
Editor(s) Mallinson, Leslie G.
Publication date 1999
Start page 113
End page 121
Publisher Kluwer Academic/Plenum Publishers
Place of publication New York, N. Y.
Summary Advanced polymeric materials and their respective composites are fast becoming one of the world's most frequently used engineering materials. They find application in the manufacture of e.g. boat hulls, high performance motor vehicles, aircraft components and sports goods. Their high specific strength and specific stiffness give them the edge in applications where weight savings are critical, but their long-term durability is often questioned. These materials are susceptible to environmental conditions such as temperature and humidity. There is also a lack of relevant data, due to the long time-scales required for testing. In this study, the Raman technique has been used to monitor the degradation of two composite systems, namely: a rubber toughened vinylester material used in the marine industry and a high temperature bismaleimide/carbon fibre aerospace composite. Preliminary Raman studies show that the toughening rubber particles dispersed in the cured vinylester resin are leached out during hygrothermal ageing. The weight gain during ageing suggests that this leaching process occurs concurrently with the absorption of water molecules. An increase in the degree of cross-linking is observed when bismaleimide/carbon fibre composite is aged at high temperature. This cross- linking tendency decreases with increasing depth within the carbon fibre bundle.
ISBN 0306464772
Language eng
Field of Research 091299 Materials Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category E1.1 Full written paper - refereed
Copyright notice ©2001, Kluwer Academic/Plenum Publishers
Persistent URL http://hdl.handle.net/10536/DRO/DU:30025088

Document type: Conference Paper
Collections: Centre for Material and Fibre Innovation
School of Engineering
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