Título: BiorheologyImportada do Authenticus Pesquisar Publicações da Revista

Vol. 50

Páginas: 269-282

ISSN: 0006-355X

Editora: IOS PRESS

ISI Web of Knowledge - 54 Citações

ISI Web of Science

Scopus - 55 Citações

INSPEC

FOS: Ciências da engenharia e tecnologias

ID Authenticus: P-008-QRE

DOI: 10.3233/BIR-130643

Abstract (EN): We investigated experimentally the rheological behavior of whole human blood subjected to large amplitude oscillatory shear under strain control to assess its nonlinear viscoelastic response. In these rheological tests, the shear stress response presented higher harmonic contributions, revealing the nonlinear behavior of human blood that is associated with changes in its internal microstructure. For the rheological conditions investigated, intra-cycle strain-stiffening and intra-cycle shear-thinning behavior of the human blood samples were observed and quantified based on the Lissajous¿Bowditch plots. The results demonstrated that the dissipative nature of whole blood is more intense than its elastic component. We also assessed the effect of adding EDTA anticoagulant on the shear viscosity of whole blood subjected to steady shear flow. We found that the use of anticoagulant in appropriate concentrations did not influence the shear viscosity and that blood samples without anticoagulant preserved their rheological characteristics approximately for up to 8 minutes before coagulation became significant.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 14

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