Abstract
Physical examination of surfaces undergoing natural outdoor soiling suggests that soil matter accumulates in up to three distinct layers. The first layer involves strong chemical attachment or strong chemisorption of soil matter on the primary surface. The second layer is physical, consisting of a highly organized arrangement of soil creating a gradation in surface energy from a high associated with the energetic first layer to the lowest possible state on the outer surface of the second layer. The lowest possible surface energy state is dictated by the chemical and physical nature of the regional atmospheric soiling materials. These first two layers are resistant to removal by rain. The third layer constitutes a settling of loose soil matter, accumulating in dry periods and being removed during rainy periods.
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© 1988 Plenum Press, New York
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Cuddihy, E.F. (1988). Soiling Mechanisms and Performance of Anti-Soiling Surface Coatings. In: Mittal, K.L. (eds) Particles on Surfaces 1. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-9531-1_8
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DOI: https://doi.org/10.1007/978-1-4615-9531-1_8
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