2024-03-29T00:49:03Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1315642020-05-26T11:34:57Zcom_10261_10252com_10261_3col_10261_10253
Hydrophobic coating of mica by stearic acid vapor deposition
Sauthier, Guillaume
Segura, Juan José
Fraxedas, J.
Verdaguer, Albert
Ministerio de Economía y Competitividad (España)
Reverté Minerals
Stearic acid
HydrophobiC
Atomic force microscopy
Self-assembled monolayer
We report on the preparation of thin films of stearic acid on mica by sublimation in air. We correlate their affinity to water (hydrophobic vs. hydrophilic character) to the morphology of the films as observed by Atomic Force Miscorcopy (AFM). Submonolayer and monolayer coverage exhibited hydrophilic character with dendritic shape defective self-assembled monolayer structures. With further exposure to stearic acid regular polyhedric multilayer three-dimensional structures formed on top of the monolayer, following the Stranski–Krastanov mechanism of growth. These structures were found to be compatible with a stearic acid bulk crystal structure. Coalesce of the structures generated a hydrophobic multilayer coating showing spiral growth. However, the multilayer coating was not homogeneous showing areas with only defective monolayer coating that still exposes bare mica.
This work was supported by the Ministerio de Economía y Competitividad (MINECO), Spain, through project MAT2012-38319-C02-01 and by Reverté Minerales, S.A. through contract 020165110005.
Peer Reviewed
2016-04-29T08:38:23Z
2016-04-29T08:38:23Z
2014
2016-04-29T08:38:23Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1016/j.colsurfa.2013.11.031
issn: 0927-7757
Colloids and Surfaces A: Physicochemical and Engineering Aspects 443: 331-337 (2014)
http://hdl.handle.net/10261/131564
10.1016/j.colsurfa.2013.11.031
http://dx.doi.org/10.13039/501100003329
Sí
none
Elsevier