2024-03-28T09:21:58Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1683452019-02-26T12:23:55Zcom_10261_89com_10261_3col_10261_342
Influence of thermal ageing on surface degradation of ethylene‐propylene‐diene elastomer
Nevshupa, Roman
Martínez-Orellana, Lidia
Álvarez, L.
López, María Francisca
Huttel, Yves
Méndez, Javier
Román García, Elisa Leonor
European Commission
Ministerio de Ciencia e Innovación (España)
Ageing
Surfaces
Surface free energy
Rubber
Evolution of the surface characteristics of EPDM elastomer was studied as a function of thermal ageing at 80°C and 120°C in air for up to 100 days. The components of the surface free energy (SFE) were determined from contact angle measurements of five liquids using acid–base regression and Fowke's theories. SFE increased with ageing duration. For ageing at 80°C, SFE increased exponentially with time and stabilized after 60 days. Ageing at 120°C promoted a steep enhancement of SFE within the first 5 days followed by a slow long‐term linear increase. Rate parameters of the SFE evolution were analyzed using Dakin's kinetic model. Analysis of the surface composition using X‐ray photoemission spectroscopy evidenced an enhancement of the oxygen content with increasing the ageing time. The increase of the polar component of the SFE was attributed to the presence of these oxygen functional groups. This tendency was more pronounced for ageing at 80°C. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011.
2018-08-07T06:53:48Z
2018-08-07T06:53:48Z
2011-01-05
artículo
Journal of Applied Polymer Science 119(1): 242-251 (2011)
0021-8995
http://hdl.handle.net/10261/168345
10.1002/app.32519
1097-4628
http://dx.doi.org/10.13039/501100004837
http://dx.doi.org/10.13039/501100000780
eng
https://doi.org/10.1002/app.32519
Sí
closedAccess
John Wiley & Sons