Specific Features of the Porous Polymeric Particle Composites Application As Fillers for Electrorheological Fluids

The rheological behavior of 1-wt % suspensions filled with composite polymer particles of chitosan with cellulose in polydimethylsiloxane without and in an electric field is studied. The features of the electrorheological response of the suspensions depending on the filler composition are revealed. The mechanism of the electrorheological effect changes for fillers with a high cellulose content at a field strength higher than 4 kV/mm. The nature of the electrorheological effect is considered from the standpoint of the electrophysical characteristics of suspensions. The results of sedimentation tests are consistent with the rheological data and are determined by the structural features of the composite fillers. The relative efficiency of the studied fluids reaches 10 5 %.