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Authors
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Hermsdorf, N. ; Sahre, K. ; Volodin, P. ; Stamm, M. ; Eichhorn, K.-J. ; Cunis, S. ; Gehrke, R. ; Panagiotou, P. ; Titz, T. ; Müller-Buschbaum, P.
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Title
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Supported Particle Track Etched Polyimide Membranes: A grazing incidence small-angle x-ray scattering study
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Date
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08.11.2004
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Number
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11985
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Abstract
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Particle track etched polyimide membranes on silicon substrates covered with a native oxide layer areinvestigated. Preparation steps similar to the common classical particle track etched membrane production,giving rise to free-standing membranes, are successfully applied to the supported membranes. Polyimidefilms are used as a starting material for a template preparation based on high energy ion irradiation. Thefilm/membrane structure is probed at different length scales by grazing incidence small-angle X-ray scatteringat each individual preparation step. In addition, characterization with atomic force microscopy, variable-angle spectroscopic ellipsometry, Fourier transform infrared transmission, and attenuated total reflectionspectroscopy is performed. An amount of 6 ± 1 vol % pores inside the polyimide film is detected. The poresare oriented perpendicular to the substrate surface and have a conical shape, yielding a slightly reducedpore size at the substrate/film interface.
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Publisher
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Langmuir
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Wikidata
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Citation
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Langmuir 20 (2004) S.10303-10310
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DOI
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https://doi.org/10.1021/la048313l
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Tags
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thin polymer-films structural modification phase-separation multilayers reflection roughness
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