7Physical–Chemical Aspects
In the previous chapters we dealt mainly with the synthetic and processing aspects of polymer coatings. In this chapter we discuss the relevant physical–chemical aspects. Intermolecular and mesoscopic interactions play an important role in coating science and hence we provide a brief overview first. Thereafter, the compatibility of solvents and polymers, that is, their solubility, is treated, followed by wetting of surfaces and adsorption of components. The importance of the latter phenomena is illustrated by the use of defoamers, surfactants and particles. All these aspects come together in dispersions (suspensions and emulsions) of which the nature and behavior are discussed. In the last two sections, we consider ...
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