Campus Units

Agronomy

Document Type

Article

Publication Version

Published Version

Publication Date

12-2003

Journal or Book Title

Water Resources Research

Volume

39

Issue

12

DOI

10.1029/2003WR002143

Abstract

[1] Because most methods for assessing the wettability of porous materials are restricted in their applicability, we developed two new methods for measuring contact angles and particle surface energy. The proposed methods (the Wilhelmy plate method (WPM) and the modified capillary rise method (MCRM)) were tested on 24 soils. For comparison, the water drop penetration time test (WDPTT) and the sessile drop method (SDM) were also applied. It was found that advancing contact angles, measured either with WPM or MCRM, agreed well in the range of 0° to 142°. Sessile drop contact angles were within the domain enclosed by the range of advancing and receding contact angles as determined with WPM. WDPTT, however, was only sensitive in the narrow range of 85° to 115°. We conclude that both WPM and MCRM are reliable methods for determining contact angles and particle surface energy over a wide range of porous material wettabilities.

Comments

This article is published as Bachmann, J., S. K. Woche, M‐O. Goebel, M. B. Kirkham, and R. Horton. "Extended methodology for determining wetting properties of porous media." Water resources research 39, no. 12 (2003). doi: 10.1029/2003WR002143. Posted with permission.

Copyright Owner

American Geophysical Union

Language

en

File Format

application/pdf

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