Topic
Sessile drop technique
About: Sessile drop technique is a research topic. Over the lifetime, 2827 publications have been published within this topic receiving 68943 citations.
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TL;DR: In this paper, the authors compared two approaches to determine the surface energy of solids, and its acid-base components in particular: inverse gas chromatography (IGC) and analysis of contact angle data using the Good-van Oss theory.
Abstract: This study compares two approaches to determine the surface energy of solids, and its acid-base components in particular: inverse gas chromatography (IGC) and analysis of contact angle data using the Good-van Oss theory. The comparison is made in the context of wood fibers from Eucalyptus globulus and Eucalyptus regnans pulped by the kraft and neutral sulfite semi-chemical (NSSC) processes, and of selected polymers. Contact angles on wood fibers were measured using the Wilhelmy method and on polymer samples using the sessile drop technique. For the dispersive component of the surface energy, the level of agreement between the two approaches was reasonable, using alkanes for the IGC measurements and diiodomethane for the Wilhelmy and sessile drop techniques. However, agreement was poor for the acid and base characteristics when monopolar probes were used for IGC and water, formamide, and diiodomethane for contact angle measurements. The Good-van Oss approach suggested that all fibers and polymers are monop...
39 citations
TL;DR: In this paper, an analysis of the computed solution to the differential equation for the profile of axisymmetric sessile drops yields new graphical and analytic methods for the determination of contact angle and interfacial tension.
39 citations
TL;DR: Functionalized colloidal probes developed and used to sense specific adhesion forces to a silica surface and a pyrite surface in various solutions indicated the presence of different types of biopolymers on two strains of bacteria.
39 citations
TL;DR: In this paper, a trisiloxane surfactant was synthesized with grafting butynediol ethoxylate onto hydrophobic heptamethyltrisiloxideane.
39 citations
TL;DR: In this article, the experimental study of the wetting phenomena in the boron carbide-copper system, using the sessile drop method at 1150°C, showed that molten Cu attacks boroni carbide substrates forming a crater below the contact area.
Abstract: The experimental study of the wetting phenomena in the boron carbide–copper system, using the sessile drop method at 1150 °C shows that molten Cu attacks boron carbide substrates forming a crater below the contact area. Boron additions prevent crater formation, improve wetting and, for a 10 at.% B alloy, reduce the equilibrium wetting angle to 40°. Thermodynamic analysis of the Cu–B–C system in the Cu-rich corner confirms the experimental results. These results and similar ones obtained in the TiC–Cu system suggest that the presence of a carbide phase over a concentration range is a key feature that governs wetting phenomena and chemical interaction at these metal–carbide interfaces.
39 citations