Abstract
Adhesion and removal phenomena in aqueous solutions were investigated using spherical polyethylene particles and a quartz plate. The experimental results are discussed and explained on the basis of the heterocoagulation theory, using ζ-potentials of the particles and the quartz plate as determined by micro-electrophoresis. The magnitude of the energy barrier preventing particle adhesion was found to be about 4000 κT for particles of 4-5μm in diameter. The Hamaker constant (A11) of a polyethylene particle was estimated by the adhesion and removal phenomena and was determined as 6.06.8×10-13ergs from curves of interaction energy plotted against separation.
