5.3.5 RheologyRheology is a key characteristic of CNF suspensions, since it can become an inconvenience in different industrial processes, especially in mixing, pumping, or coating.CNF suspensions have shear thinning properties where viscosity decreases or shear rate increases, further recovering the initial shape as the shearing forces cease.Moreover, CNF suspensions are thixotropic, a timedependent shear thinning property.