Preparation and morphology-dependent wettability of porous alumina membranes

Dmitry L. Shimanovich, Alla I. Vorobjova, Daria I. Tishkevich, Alex V. Trukhanov, Maxim Vladimirovich Zdorovets, Artem Leonidovich Kozlovskiy

Beilstein Journal of Nanotechnology, 2018

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DOI 10.3762/bjnano.9.135

Data confidence 85 high

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Abstract

This article presents the preparation and study of the wetting properties of porous alumina membranes (PAMs) with a thickness of 25 to 75 μm and with a different pore sizes. The fabrication process features, scanning electron microscopy and atomic force microscopy characterization results are presented. The comparative analysis of PAM surfaces (outer and inner) and the effect of morphology of these surfaces on the wetting properties are discussed. Both alumina surfaces show significant morphology-dependent wettability. Measurements of the interfacial contact angle were made on the as-fabricated amorphous membrane and after pore widening with a range of pore diameters from 25 to 100 nm. The possible applications of PAMs for various membrane technologies is shown.