Date of Award


Degree Name

Bachelor of Science


Paper Science and Engineering


The purpose of this study was to determine what effect shear has upon the vehicle migration in aqueous coatings. The roll inclined-plane apparatus was utilized to generate various ranges of shear rate. An immobilization factor was then calculated for these different rates of shear indicating the degree of vehicle penetration. The particle size of the binder and the particle size of the pigment were varied to determine their effect on the penetration into the base substrate.

It was concluded that high shear rates pack the particles, either binder or pigment, into the pores of the base substrate. This phenomenon prevents the migration of the liquid phase.