Rheological Characterization of Fiber Suspensions and Nanocomposites

International audienceIn this chapter, we review the rheological behavior of multiphase systems (suspensions in Newtonian fluids and polymers filled with fibers or microfibers and nanoparticles). First, we present some basic definitions and concepts useful for the understanding of the rheological properties of concentrated suspensions. We summarize key problems encountered in rheometry, and then we review the rheological behavior of suspensions of rigid and flexible fibers in polymer matrices and that of nanocomposites, based on nanoclays and carbon nanotubes (CNTs). Finally, we conclude with challenges and trends for future research