Degradation of a poly(ether urethane urea) elastomer: infra-red and XPS studies |
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| Affiliation: | 1. Department of Macromolecular Science, Case Western Reserve University, Cleveland, Ohio 44106, USA;2. Department of Pathology, Case Western Reserve University, Cleveland, Ohio 44106, USA;1. Department of Chemistry, Graduate School of Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan;2. Department of Chemistry, School of Education, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan;3. Department of Chemistry, Kisarazu National College of Technology, 2-11-1 Kiyomidai-Higashi, Kisarazu, Chiba 292-0041, Japan;1. Institute of Metal Research, Chinese Academy of Science, Shenyang, Liaoning 110016, PR China;2. School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, Liaoning 110016, PR China;3. Department of Chemistry, Liaoning University, Shenyang, Liaoning 110036, PR China;1. University of Novi Sad, Faculty of Technology Novi Sad, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia;2. Institute of Macromolecular Chemistry AS CR v.v.i.,Heyrovského nám. 2, 162 06 Prague, Czech Republic;3. University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovica 6, 21000 Novi Sad, Serbia |
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| Abstract: | The potential for a poly(ether urethane urea) (PEUU) elastomer to undergo degradation, under the conditions preyalent in the biological environment, was investigated using an in vitro model system. The effect of exposing an unstabilized PEUU to an aqueous environment containing the proteolytic enzyme, papain, for one month was examined by Fourier transform infra-red spectroscopy, X-ray photoelectron spectroscopy and chromatographic methods. Evidence of degradation was observed in both enzyme- and water-treated PEUU, but was restricted to the surface regions of the polymer. Analysis of methanol extracts from polymer samples revealed evidence for the degradation of ether linkages, which was independent of the enzyme, whereas the degradation of urethane and urea groups, indicated by the detection of a primary aromatic amine degradation product, depended on the presence of the proteolytic enzyme. |
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