Inverse Gas Chromatography with Film Cell Unit: An Attractive Alternative Method to Characterize Surface Properties of Thin Films
Résumé
Inverse gas chromatography (IGC) is widely used for the characterization
of surfaces. The present work describes a novel IGC tool, the
recently developed film cell module, which measures monolithic thin
solid film surface properties, whereas only samples in powder or fiber
state or polymer-coated supports can be studied by classic IGC. The
surface energy of four different solid supports was measured using
both classic IGC with columns packed with samples in the powder
state, and IGC with the new film cell module or the sessile drop technique,
using samples in the film state. The total surface energy and
its dispersive and specific components were measured for glass,
polyethylene, polyamide and polytetrafluoroethylene. Similar results
were obtained for the four materials using the three different techniques.
The main conclusion is that the new film cell module for
IGC is an attractive alternative to the sessile drop technique as it
gives very accurate and reproducible results for surface energy components,
with significant savings in time and the possible control of
sample humidity and temperature. This film cell module for IGC extends
the application field of IGC to any thin solid film and can be
used to study the effect of any surface treatment on surface energy.
Domaines
Chimie analytique
Origine : Fichiers produits par l'(les) auteur(s)
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