Effect of heating on the transverse adhesion of collagen fibers 167.00

International audienceThe mechanical properties of a composite fibrous material depend on the properties of the fibers, of the matrix and of the interactions between them. The purpose of this work was to investigate the evolution of the adhesion between collagen fibers and the extracellular matrix when the tissue is heated. A peel test was applied on small samples of bovine longissimus epimysium to measure the transverse adhesion. The energy of peeling per surface is calculated. After 30 min of heating at 55°C, the energy of peeling was approximately the same as for the tissue in the raw state. It decreased by half between 60 and 65°C. After heating at 75°C, 25% of this energy still remained. These results show the destruction of the adhesive elements of the matrix with aqueous heating