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Analysis of degradation in UHMWPE a comparative study among the various commercial and laboratory grades UHMWPE
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för fysik.
Vise andre og tillknytning
2016 (engelsk)Inngår i: 14TH INTERNATIONAL SYMPOSIUM ON ADVANCED MATERIALS (ISAM 2015) / [ed] Qaisar, S., Khan, A.N., Mukhtar, E.A., IOP PUBLISHING LTD , 2016, Vol. 146, artikkel-id 012025Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Oxidative degradation of the ultra-high molecular weight polyethylene ( UHMWPE) limits the life of implants. This degradation can be monitored to estimate the service life of UHMWPE following the standard protocols as defined by American Standards for Testing Materials ( ASTM). In this work, a comparative study has been carried on two commercially available UHMWPE grades i. e. GUR 1020 and GUR 1050 and one laboratory grade UHMWPE which was purchased from Sigma Aldrich. These powder samples were pressed while using hot press with controlled heating and cooling setup in open air under 200 bar of external pressure. These sheets were then subjected to accelerated aging in an oven at 80 degrees C for three weeks. The degradation of the UHMWPE was monitored by ATR-FTIR techniquefor three weeks. The oxidation index ( OI) measurement showed that the commercial grade UHMWPE i. e. GUR-1020 and GUR-1050 degrade more as compared to laboratory grade UHMWPE. The values of OI after three weeks of accelerating aging were found 0.18, 0.14, and 0.09 for GUR-1020, GUR-1050, and Sigma Aldrich, respectively. In addition to this, it was found that commercial grades of UHMWPE suffer more structural alterations as compared to laboratory grade one. We hope that these results will be of particular and fundamental importance for the researchers and orthopaedic industry.

sted, utgiver, år, opplag, sider
IOP PUBLISHING LTD , 2016. Vol. 146, artikkel-id 012025
Serie
IOP Conference Series-Materials Science and Engineering, ISSN 1757-8981
HSV kategori
Identifikatorer
URN: urn:nbn:se:umu:diva-133389DOI: 10.1088/1757-899X/146/1/012025ISI: 000396408800025OAI: oai:DiVA.org:umu-133389DiVA, id: diva2:1087539
Konferanse
14th International Symposium on Advanced Materials (ISAM), OCT 12-16, 2015, Natl Ctr Phys, Islamabad, PAKISTAN
Tilgjengelig fra: 2017-04-07 Laget: 2017-04-07 Sist oppdatert: 2018-03-15bibliografisk kontrollert

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