Limitation of the Young-Dupré Equation in the Analysis of Adhesion Forces Involving Surfactant Solutions
The atomic force microscope was used to measure adhesion forces between polyethylene particles, serving as model oil droplets, and mineral substrates (fluorite and quartz) in aqueous solutions of ethoxylated alcohols. Also, contact angles were measured in the kerosene-ethoxylated alcohol solution-mi...
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Published in | The Journal of adhesion Vol. 74; no. 1-4; pp. 361 - 371 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Basingstoke
Taylor & Francis Group
01.12.2000
Taylor and Francis |
Subjects | |
Online Access | Get full text |
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Summary: | The atomic force microscope was used to measure adhesion forces between polyethylene particles, serving as model oil droplets, and mineral substrates (fluorite and quartz) in aqueous solutions of ethoxylated alcohols. Also, contact angles were measured in the kerosene-ethoxylated alcohol solution-mineral systems. Correlations obtained between adhesion and surfactant concentration for the polyethylene-aqueous solution-quartz system differs significantly from those predicted by the Young-Dupré equation for the kerosene-aqueous solution-quartz system. Interactions, characteristic for such aqueous systems, which contribute to the pull-off forces measured by atomic force microscopy are not included in the Young-Dupré equation, and are primarily responsible for the inconsistency in the adhesion versus surfactant concentration relationship obtained from contact angle measurements. |
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ISSN: | 0021-8464 1563-518X 1545-5823 |
DOI: | 10.1080/00218460008034536 |