Adhesion of Latex Particles on Inorganic Surfaces, 1994 Coating Conference Proceedings

V. Granier, A. Sartre, M. Joanicot

Synthetic latex is widely used as a binder in paper coating. Upon dehydration of coating colors, latex particles are brought into contact with mineral pigments and this process results in coating structuration and consolidation. This composite layer is described as a porous mineral structure, whose pores are covered by latex particles. Therefore, it is of fundamental interest to study the ordering of latex particles in the coating for two reasons: i) it may influence the coating cohesion and adhesion, ii) during the printing process the penetration of ink and water is controlled by the interfaces within the layer.

In this work we have used Atomic Force Microscopy to study the ordering and adhesion of latex particles on model inorganic surfaces as a function of latex parameters, drying conditions and the chemical nature of the surface. We use the acid-base concept to discuss how specific interactions between latex particles and the surface can influence polymer particle spreading.