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Título

Modification of poly(dimethylsiloxane) as a basis for surface wrinkle formation: Chemical and mechanical characterization

AutorCampo, Adolfo del; Nogales, Aurora ; Ezquerra, Tiberio A. ; Rodríguez-Hernández, Juan
Palabras claveQuantitative nanomechanical mapping
Depth profile
Confocal Raman
Surface mechanical properties
PDMS
Surface modification
UVO
Surface degradation
Fecha de publicación16-jun-2016
EditorElsevier
CitaciónPolymer 98: 327-335 (2016)
ResumenIn this manuscript, the processes occurring during UV-ozone treatment on polydimethylsiloxane (PDMS) surfaces i.e. formation of a stiff silica-like layer and surface degradation have been studied. While the chemical changes have been evaluated using Confocal Raman Microscopy (CRM) with submicrometer resolution, partial surface degradation occurring during longer ozone treatments have been evidenced both by Optical Profilometry and AFM. Whereas previous studies reported the formation of a thin silica layer of around 20–30 nm up to 200 nm depending on the method employed, herein, we demonstrated that in effect a thin rigid layer is formed but instead of a sharp interface predicted by previous reports a gradient depth profile was obtained. CRM evidenced the formation of a 4 μm layer of modified material. By Quantitative Nanomechanical Mapping (QNM) and based on the equations that predict the wrinkle formation, a surface layer thickness of around of 4.5 μm was also determined.© 2016 Elsevier Ltd. All rights reserved.
Descripción9 págs.; 6 figs.
Versión del editorhttps://doi.org/10.1016/j.polymer.2016.06.035
URIhttp://hdl.handle.net/10261/151750
DOI10.1016/j.polymer.2016.06.035
Identificadoresdoi: 10.1016/j.polymer.2016.06.035
issn: 0032-3861
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