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Vývoj anorganických nosičů vhodných pro depozici mikroporésních vrstev – syntéza a charakterizace
Juristová, K. ; Fíla, V. ; Andertová, J. ; Zikánová, Arlette ; Bernauer, B. ; Lhotka, M.
The present study is focused on the preparation of porous supports (ceramic, glass) and thin microporous layers (zeolite, polyaluminum chlorid (PAC), silicalite-1), which are suitable for application in the catalysis, membrane technology and biotechnology. The modification of ceramic Al2O3 support and its preparation by the slip-casting method is discussed here. The optimal conditions for modification of ceramic support using the PAC and the optimal conditions for slip-casting support design were proposed and experimentally verified. The second part of the work deals with the synthesis of boro-silicalite glass. The characterization of the supports by SEM, mercury porosimetry and by permeation measurements are discussed.
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Kompozity na bázi silikalit-1- polyimidy
Šnáblová-Fryčová, M. ; Sysel, P. ; Chánová, E. ; Bernauer, B. ; Kočiřík, Milan
Two methods of adhesion improvement between the polyimide matrix and zeolite (silicalite-1) were examined. Firstly, there were prepared polyimide precursors (polyamic acids) with controlled molecular weight terminated with 3-aminopropyltriethoxysilane. The transformation of polyamic acids into polyimides upon heating was accompanied by the formation of Si-O-Si bonds between the polymeric matrix and hydroxyl groups on zeolite surface. Secondly, the polyimide was modified using rubbery poly(dimethylsiloxane)s. Relations between film properties (i.e. interfacial adhesion and accessibility of zeolite channels for species) and film composition were studied both for unfilled and filled PI films.
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