Skip to Main content Skip to Navigation
Journal articles

Porosity and mechanical properties of mesoporous thin films assessed by environmental ellipsometric porosimetry

Abstract : Mesoordered silica thin films with cubic structures were prepared by evaporation induced self-assembly (EISA) with two types of structuring agent (CTAB and block copolymer F127). A complete and accurate description of these films was obtained by combining 2D-SAXS analyses, variable angle spectroscopic ellipsometry, and a specially designed environmental ellipsometric porosimetry (EEP) experiment. The EEP analysis is rapid and cheap and operates at ambient pressure and temperature. This latter experiment was performed with water and produced a set of water adsorption−desorption isotherms. A modified Kelvin equation, coupled with a modelisation of pores contraction, enabled the determination of the structural parameters of films porous networks:  ellipsoidal pore diameters, porous volume, and surface area. Young moduli of films in the direction perpendicular to the substrates were calculated from these parameters.
Document type :
Journal articles
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-00022622
Contributor : Alban Politi <>
Submitted on : Tuesday, April 11, 2006 - 4:29:14 PM
Last modification on : Tuesday, September 22, 2020 - 3:40:03 AM

Links full text

Identifiers

Citation

Cédric Boissière, David Grosso, Sophie Lepoutre, Lionel Nicole, Aline Brunet Bruneau, et al.. Porosity and mechanical properties of mesoporous thin films assessed by environmental ellipsometric porosimetry. Langmuir, American Chemical Society, 2005, 21, pp.12362-12371. ⟨10.1021/la050981z⟩. ⟨hal-00022622⟩

Share

Metrics

Record views

298