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- W113399705 abstract "We have investigated and measured the intermolecular forces between two layers of guar gum, a naturally occurring polysaccharide, adsorbed to glass using a Particle Probe AFM. To our knowledge, no work on the interactions of adsorbed guar gum using any force sensing technique has been previously reported. In this work a glass particle with a nominal diameter of 20µm was glued to a silicon cantilever to construct a particle probe surface apparatus. The polymer was allowed to adsorb onto two glass surfaces, i.e. the glass particle and a flat glass plate, and data are presented to describe the evolution of the adsorbed polymer layer with time. Scans were carried out at 0.33 Hz corresponding to approach and separation velocities of approximately 260 nms -1 . On approach of the surfaces at partial surface coverage of the polymer, either repulsive steric interactions or weak attractive bridging interactions were seen. On surface separation, a long-range attraction occured, as bridging polymer chains were pulled apart. During the partial surface coverage experiments, the adhesion and attractive interactions decreased as the adsorbed polymer layers evolved. When a stable equilibrium layer was achieved at full surface coverage, the system displayed a repulsive steric behaviour starting at a relatively large interaction distance, ~300 nm. A marked hysteresis was observed upon surface separation at full surface coverage indicating disruption of the developed adsorbed polymer layer." @default.
- W113399705 created "2016-06-24" @default.
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- W113399705 date "2005-01-01" @default.
- W113399705 modified "2023-09-27" @default.
- W113399705 title "INTERRACTION FORCES BETWEEN POLYMER-COATED GLASS SURFACES" @default.
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