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Reports from Massachusetts Institute of Technology Add New Data to Findings in Extracellular Matrix Proteins (Mechanics of collagen-hydroxyapatite...

August 1, 2014



Reports from Massachusetts Institute of Technology Add New Data to Findings in Extracellular Matrix Proteins (Mechanics of collagen-hydroxyapatite model nanocomposites)

By a News Reporter-Staff News Editor at Health & Medicine Week -- Current study results on Proteins have been published. According to news reporting from Cambridge, Massachusetts, by NewsRx journalists, research stated, "Bone is a hierarchical biological composite made of a mineral component (hydroxyapatite crystals) and an organic part (collagen molecules). Small-scale deformation phenomena that occur in bone are thought to have a significant influence on the large scale behavior of this material."

The news correspondents obtained a quote from the research from the Massachusetts Institute of Technology, "However, the nanoscale behavior of collagen-hydroxyapatite composites is still relatively poorly understood. Here we present a molecular dynamics study of a bone model nanocomposite that consist of a simple sandwich structure of collagen and hydroxyapatite, exposed to shear-dominated loading. We assess how the geometry of the composite enhances the strength, stiffness and capacity to dissipate mechanical energy."

According to the news reporters, the research concluded: "We find that H-bonds between collagen and hydroxyapatite play an important role in increasing the resistance against catastrophic failure by increasing the fracture energy through a stick-slip mechanism."

For more information on this research see: Mechanics of collagen-hydroxyapatite model nanocomposites. Mechanics Research Communications, 2014;58():17-23. Mechanics Research Communications can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Mechanics Research Communications - www.elsevier.com/wps/product/cws_home/374)

Our news journalists report that additional information may be obtained by contacting F. Libonati, MIT, Cambridge, MA 02139, United States. Additional authors for this research include A.K. Nair, L. Vergani and M.J. Buehler (see also Proteins).

Keywords for this news article include: Cambridge, Massachusetts, United States, North and Central America, Bone Research, Collagen, Emerging Technologies, Extracellular Matrix Proteins, Hydroxyapatites, Nanocomposite, Nanotechnology, Phosphates, Phosphoric Acids

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Health & Medicine Week


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