Journal
APPLIED SURFACE SCIENCE
Volume 255, Issue 18, Pages 8135-8144Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2009.05.030
Keywords
Polyimide; Polyhedral oligomeric silsesquioxane; Oxygen plasma; Lunar dust
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Funding
- Oak Ridge Associated Universities NASA Post-doctoral Program
- Dust Project under the Exploration Science Mission Directorate (ESMD)
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Topographically rich surfaces were generated by spray-coating organic solutions of a polyhedral oligomeric silsesquioxane, octakis(dimethylsilyloxy) silsesquioxane (POSS), on Kapton (R) HN films and exposing them to radio frequency generated oxygen plasma. Changes in both surface chemistry and topography were observed. High-resolution scanning electron microscopy indicated substantial modification of the POSS-coated polyimide surface topographies as a result of oxygen plasma exposure. Water contact angles varied from 104 degrees for unexposed POSS-coated surfaces to similar to 5 degrees for samples exposed for 5 h. Modulation of the dispersive and polar contributions to the surface energy was determined using van Oss Good Chaudhury theory. Changes in surface energy are related to potential adhesive interactions with lunar dust simulant particles. (C) 2009 Elsevier B.V. All rights reserved.
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