Degradation Behaviour of Zeolite Filled Polyurethanes under In Vitro Aging Process

Peter Kaali; György Czél

doi:10.4028/www.scientific.net/MSF.812.83

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HomeMaterials Science ForumMaterials Science Forum Vol. 812Degradation Behaviour of Zeolite Filled...

Degradation Behaviour of Zeolite Filled Polyurethanes under In Vitro Aging Process

Abstract:

In this study the degradation and ion/zeolite release processes of in vitro aged zeolite loaded polyurethane composites were evaluated. Two in vitro artificial aging solutions were used; artificial lysosomal fluid (ALF) and Gamble ́s solution and the total exposure time was 12 weeks. Periodically, SEM micrographs were taken of the surface of polyester type polyurethane-zeolite composites. After exposure to ALF solution the samples showed round holes and a rougher surface in general over time. Micrographs of the samples immersed in Gamble’s solution exhibited different signs of degradation with damage features on the surfaces, understood as black holes and a rougher surface pattern. In addition varying amount of salt was also observed on the surfaces that might influence the ion/zeolite release. Furthermore, the zeolite filler caused remarkable changes in mechanical properties after the aging process, which could not be discerned.

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Periodical:

Materials Science Forum (Volume 812)

Pages:

83-88

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.812.83

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Online since:

February 2015

Authors:

Peter Kaali, György Czél*

Keywords:

Aging Process, Mechanical Degradation, SEM Analysis, Zeolite Filled TPU

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