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Experimental investigations into the mechanical properties of the collagen fibril-noncollagenous protein (NCP) interface in antler bone

Published online by Cambridge University Press:  01 February 2011

Fei Hang  and
Asa H Barber
Fei Hang
Affiliation:
f.hang@qmul.ac.ukQueen Mary University of LondonCentre for Materials Research & School of Engineering and Materials Science, London, United Kingdom
Asa H Barber
Affiliation:
f.hang@qmul.ac.ukQueen Mary University of LondonCentre for Materials Research & School of Engineering and Materials Science, London, United Kingdom
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Abstract

Antler is an extraordinary bone tissue that displays significant overall toughness when compared to other bone materials. The origin of this toughness is due to the complex interaction between the nanoscale constituents as well as structural hierarchy in the antler material. Of particular interest is the mechanical performance of the interface between the collagen fibrils and considerably smaller volume of non-collagenous protein (NCP) between these fibrils. This paper directly examines the mechanical properties of isolated volumes of antler using combined in situ atomic force microscopy (AFM)-scanning electron microscopy (SEM) experiments. The antler material at the nanoscale is approximated to a fiber reinforced composite, with composite theory used to evaluate the interfacial shear stresses generated between the individual collagen fibrils and NCP during mechanical loading.

Keywords

bonestrengthcomposite
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1274: Symposium QQ – Biological Materials and Structures in Physiologically Extreme Conditions and Disease , 2010 , 1274-QQ08-08
Copyright
Copyright © Materials Research Society 2010

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