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Wetting phenomena on polymeric surfaces
Author(s) -
Shanahan Martin E. R.
Publication year - 1996
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19961010152
Subject(s) - wetting , contact angle , materials science , solid surface , wetting transition , hysteresis , slip (aerodynamics) , orientation (vector space) , mechanics , composite material , chemical physics , thermodynamics , chemistry , geometry , physics , condensed matter physics , mathematics
Classic theory predicts a unique value of equilibrium contact angle, θ o , for a given solid/liquid/fluid system. However, wetting phenomena are often very complicated in practice, with contact angle hysteresis being a major source of problems in interpretation. Contact angle variability is related to several factors, but we consider two which are particularly relevant to polymeric substrates ‐ effects of orientation of molecular chains near the surface and local solid strain at the wetting front. A model is proposed to explain “stick‐slip” motion of the triple line.