Particle Adhesion in Relation to Physicochemical Properties of Paint and Varnish Coatings

Particle Adhesion in Relation to Physicochemical Properties of Paint and Varnish Coatings 

Adhesion of Particles and Wettability of Coating. Of the various physicochemical properties affecting the adhesive forces between particles and coatings, we will examine the hydrophobicity or hydrophilicity of the coating, the con- 

As pointed out previously (Chapter II), molecular forces represent one of the factors determining adhesion. The molecular interaction of contiguous solids is governed by the properties of the surface functional groups of the molecules. For paint and varnish materials [212], the molecular interaction between dust particles and the surface can be correlated with the polarity of the polymers. 

The molecular component of adhesive force depends not only on the polarity of the coating, but also on the polarity of the particles. The following data illustrate the possible influence of polymer functional groups on the adhesion of polar and nonpolar particles  

Molecular groups. . . Change in adhesion polar particles. nonpolar particles. .  

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