Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 31, Pages 8975-8979Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201503031
Keywords
anti-waxing coating; heterogeneous nucleation; self-replenishing; solid deposition; wetting properties
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Funding
- National Research Fund for Fundamental Key Projects [2013CB933000, 2012CB933800]
- National Natural Science Foundation [21421061, 21431009]
- Chinese Academy of Sciences [KJZD-EW-M01, KJZD-EW-M03]
- 111 Project [B14009]
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Solid deposition, such as the formation of ice on outdoor facilities, the deposition of scale in water reservoirs, the sedimentation of fat, oil, and grease (FOG) in sewer systems, and the precipitation of wax in petroleum pipelines, cause a serious waste of resources and irreversible environmental pollution. Inspired by fish and pitcher plants, we present a self-replenishable organogel material which shows ultra-low adhesion to solidified paraffin wax and crude oil by absorption of low-molar-mass oil from its crude-oil environment. Adhesion of wax on the organogel surface was over 500times lower than adhesion to conventional material surfaces and the wax was found to slide off under the force of gravity. This design concept of a gel with decreased adhesion to wax and oil can be extended to deal with other solid deposition problems.
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