Fibrillar organic phases and their roles in rigid biological composites

Journal of the Mechanical Behavior of Biomedical Materials
Bruce W AreyGeorge Mayer

Abstract

This study focused on determining the presence of organic phases in the siliceous components of rigid marine composites ("glass" sponge spicules), and thereby clarifying how such composites dissipate significant mechanical energy. Through the use of imaging by helium ion microscopy in the examination of the spicules, the organic phase that is present between the layers of hydrated silica was also detected within the silica cylinders of the composite, indicating the existence therein of a network, scaffolding, or other pattern that has not yet been determined. It was concluded that the presence of an interpenetrating network of some kind, and tenacious fibrillar interfaces are responsible for large energy dissipation in these siliceous composites by viscoelastic and other mechanical deformation processes. This discovery means that future mechanics analyses of large deformation behavior of such natural rigid composites (that may also include teeth and bones) should be based on the presence of interpenetrating phases.

References

Oct 2, 2003·Progress in Molecular and Subcellular Biology·Werner E MüllerHeinz C Schröder
Oct 10, 2003·Microscopy Research and Technique·Werner E G MüllerHeinz C Schröder
Jun 22, 2007·Proceedings of the National Academy of Sciences of the United States of America·Nicholas J GlassmakerManoj K Chaudhury
Feb 14, 2009·International Review of Cell and Molecular Biology·Xiaohong WangWerner E G Müller
Jan 1, 2008·Journal of the Mechanical Behavior of Biomedical Materials·Markus J Buehler
Dec 17, 2009·Acta Biomaterialia·M JohnsonG Mayer
May 14, 2011·Journal of the Mechanical Behavior of Biomedical Materials·George Mayer

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Citations

Jan 1, 2016·Journal of the Mechanical Behavior of Biomedical Materials·Aniruddha SamantaAnoop Kumar Mukhopadhyay
Aug 7, 2017·Journal of the Mechanical Behavior of Biomedical Materials·George Mayer

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