M. L. Lambri1,2, E. D. Giordano2,3, P. B. Bozzano4, F. G. Bonifacich2, J. I. Pérez-Landazábal5,6, G. I. Zelada2, D. Gargicevich2, V. Recarte5,6, O. A. Lambri2*
Journal of Renewable Materials, Vol.4, No.4, pp. 251-257, 2016, DOI:10.7569/JRM.2016.634111
Abstract The denaturation processes of collagen in the temperature range between 450 K and 670 K are revealed through studies performed on cow rib bones by means of mechanical spectroscopy, differential scanning calorimetry, thermogravimetry, scanning electron microscopy and infrared spectroscopy. The conformational change of the collagen molecules from a triple helix structure to a random coil was found at around 510 K. It was determined that the transformation is developed through the viscous movement of fibrils with an activation energy of (127 ± 8) kJ/mol. The second stage of massive bulk deterioration of the collagen was found at around 600 K,… More >
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