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Contact angle hysteresis phenomena on polymer surfaces have been studied by contact angle measurements using sessile liquid droplets and captive air bubbles in conjunction with a drop shape method known as Axisymmetric Drop Shape Analysis — Profile (ADSA-P). In addition, commercially available sessile drop goniometer techniques were used. The polymer surfaces were characterized with respect to their...
We report the surface properties of thin polymer films prepared by spin coating from different solvents and subsequent annealing. Surface morphology is studied using optical and scanning force microscopy (SFM). Low-rate dynamic advancing contact angles of water are measured by axisymmetric drop shape analysis (ADSA). Optical, SFM and contact angle measurements give complementary information on the...
Inverse low-rate dynamic contact angles were measured using captive air bubbles in conjunction with axisymmetric drop shape analysis (ADSA) to study the wettability of adsorbed protein layers in their highly hydrated state at the stationary end point of the adsorption process. The initial surface state of smooth fluorohydrocarbon polymer films, used as substrates for the adsorption of two human plasma...
Contact angle measurements with captive bubbles have been used to quantify the wettability of different cellulosic materials in contact with pure water or aqueous protein solutions. The application of a new contact angle technique (axisymmetric drop shape analysis) in combination with atomic force microscopy permits new insights into the wetting behaviour of these hydrophilic surfaces. It was found...
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