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Atomic Force Microscopy Contact Mode Study on Ultra High Molecular Weight Polyethylene

Published online by Cambridge University Press:  01 February 2011

Yifang Cao
Affiliation:
Princeton Institute of Materials Science and Engineering (PRISM) and Department of Mechanical and Aerospace Engineering Princeton University Princeton, NJ 08544
Jikou Zhou
Affiliation:
Princeton Institute of Materials Science and Engineering (PRISM) and Department of Mechanical and Aerospace Engineering Princeton University Princeton, NJ 08544
Oludele Popoola
Affiliation:
Zimmer Corporate Warsaw, IN 46581
Dal F. Swarts
Affiliation:
Zimmer Corporate Warsaw, IN 46581
Wole Soboyejo
Affiliation:
Princeton Institute of Materials Science and Engineering (PRISM) and Department of Mechanical and Aerospace Engineering Princeton University Princeton, NJ 08544
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Abstract

This paper presents the results of contact mode atomic force microscopy (AFM) study on the nanoscale Young's modulus and work of adhesion of ultra high molecular weight polyethylene (UHMWPE). Cryoultramicrotomed surfaces of UHMWPE were scanned using the contact mode of AFM. Fibril regions are commonly found on the sample, however, a non-fibril particulate region was also found. AFM force displacement curves were obtained for the sample. The JKR theory and Maugis Dugdale model were used for the analysis. A good fitting between the theories and experimental data was found. The nanoscale Young's modulus and work of adhesion of UHMWPE extracted from the experimental data were in reasonably good agreement with the values reported in other literatures.

Type
Research Article
Copyright
Copyright © Materials Research Society 2005

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