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Título

Reversible stress softening of collagen based networks from the jumbo squid mantle (Dosidicus gigas)

Autor Torres, F. G.; Troncoso, O. P.; Rivas, E. R.; Gomez, C. G.; López García, Daniel
Palabras clave Reversible stress softening
Jumbo squid
Collagen
Fecha de publicación 2014
EditorElsevier
Citación Materials Science & Engineering C-Biomimetic and Supramolecular Systems 37: 9- 13 (2014)
ResumenDosidicus gigas is the largest and one of the most abundant jumbo squids in the eastern Pacific Ocean. In this paper we have studied the muscle of the mantle of D. gigas (DGM). Morphological, thermal and rheological properties were assessed by means of atomic force microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, differential scanning calorimetry, thermogravimetry and oscillatory rheometry. This study allowed us to assess the morphological and rheological properties of a collagen based network occurring in nature. The results showed that the DGM network displays a nonlinear effect called reversible stress softening (RSS) that has been previously described for other types of biological structures such as naturally occurring cellulose networks and actin networks. We propose that the RSS could play a key role on the way jumbo squids withstand hydrostatic pressure. The results presented here confirm that this phenomenon occurs in a wider number of materials than previously thought, all of them exhibiting different size scales as well as physical conformation. © 2013 Elsevier B.V.
URI http://hdl.handle.net/10261/93897
DOI10.1016/j.msec.2013.12.028
Identificadoresdoi: 10.1016/j.msec.2013.12.028
issn: 0928-4931
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