Study of the Accessibility of Zeolite Crystals in Polyimide Matrices. A Route to Coatings Exhibiting Selective Permeation
The accessibility of void space in MFI-type zeolite crystals, isolated and embedded in a polyimide (PI) matrix, was studied using optical microscopy coupled with an iodine indicator technique (IIT). IIT was used to estimate the adhesion between the PI matrix and the zeolitic phase, the accessibility...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2005-12-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361705775373288 |
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| author | Marie Šnáblová Fryčová Milan Kočiřík Arlette Zikánová Petr Sysel Bohumil Bernauer Vladislav Krystl Ivan Hüttel Jiri Hradil Mladen Eić |
| author_facet | Marie Šnáblová Fryčová Milan Kočiřík Arlette Zikánová Petr Sysel Bohumil Bernauer Vladislav Krystl Ivan Hüttel Jiri Hradil Mladen Eić |
| author_sort | Marie Šnáblová Fryčová |
| collection | DOAJ |
| description | The accessibility of void space in MFI-type zeolite crystals, isolated and embedded in a polyimide (PI) matrix, was studied using optical microscopy coupled with an iodine indicator technique (IIT). IIT was used to estimate the adhesion between the PI matrix and the zeolitic phase, the accessibility of the zeolite void space for gas molecules as well as for characterizing the spatial distribution of embedded crystals in the composite. The channel system of the zeolitic phase in as-synthesized composites with the majority of crystals covered by a layer of PI is occupied by the solvent molecules used in composite synthesis. In untreated composites, the zeolitic phase is inaccessible to iodine sorption. Colouring patterns and colouring kinetics have been used to characterize the efficiency of the treatment for removing the PI covering layer from the crystal surface. The same techniques can be applied to characterize the treatment with regard to the desorption of solvents ( N- methyl-2-pyrrolidone, N,N -dimethylformamide, n-heptane) from the silicalite-1 channel system. |
| format | Article |
| id | doaj-art-bc5a7746021f4e7ea1a655a489dfa41d |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2005-12-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-bc5a7746021f4e7ea1a655a489dfa41d2025-01-03T01:23:08ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382005-12-012310.1260/026361705775373288Study of the Accessibility of Zeolite Crystals in Polyimide Matrices. A Route to Coatings Exhibiting Selective PermeationMarie Šnáblová Fryčová0Milan Kočiřík1Arlette Zikánová2Petr Sysel3Bohumil Bernauer4Vladislav Krystl5Ivan Hüttel6Jiri Hradil7Mladen Eić8 Department of Inorganic Technology, Institute of Chemical Technology, 166 28 Prague 6, Czech Republic J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, 182 23 Prague 8, Czech Republic J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, 182 23 Prague 8, Czech Republic Department of Polymers, Institute of Chemical Technology, 166 28 Prague 6, Czech Republic Department of Inorganic Technology, Institute of Chemical Technology, 166 28 Prague 6, Czech Republic Department of Inorganic Technology, Institute of Chemical Technology, 166 28 Prague 6, Czech Republic Department of Solid State Engineering, Institute of Chemical Technology, 166 28 Prague 6, Czech Republic Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 166 28, Prague 6, Czech Republic Department of Chemical Engineering, University of New Brunswick, P.O. Box 4400, Fredericton N.B., Canada E3B5A3The accessibility of void space in MFI-type zeolite crystals, isolated and embedded in a polyimide (PI) matrix, was studied using optical microscopy coupled with an iodine indicator technique (IIT). IIT was used to estimate the adhesion between the PI matrix and the zeolitic phase, the accessibility of the zeolite void space for gas molecules as well as for characterizing the spatial distribution of embedded crystals in the composite. The channel system of the zeolitic phase in as-synthesized composites with the majority of crystals covered by a layer of PI is occupied by the solvent molecules used in composite synthesis. In untreated composites, the zeolitic phase is inaccessible to iodine sorption. Colouring patterns and colouring kinetics have been used to characterize the efficiency of the treatment for removing the PI covering layer from the crystal surface. The same techniques can be applied to characterize the treatment with regard to the desorption of solvents ( N- methyl-2-pyrrolidone, N,N -dimethylformamide, n-heptane) from the silicalite-1 channel system.https://doi.org/10.1260/026361705775373288 |
| spellingShingle | Marie Šnáblová Fryčová Milan Kočiřík Arlette Zikánová Petr Sysel Bohumil Bernauer Vladislav Krystl Ivan Hüttel Jiri Hradil Mladen Eić Study of the Accessibility of Zeolite Crystals in Polyimide Matrices. A Route to Coatings Exhibiting Selective Permeation Adsorption Science & Technology |
| title | Study of the Accessibility of Zeolite Crystals in Polyimide Matrices. A Route to Coatings Exhibiting Selective Permeation |
| title_full | Study of the Accessibility of Zeolite Crystals in Polyimide Matrices. A Route to Coatings Exhibiting Selective Permeation |
| title_fullStr | Study of the Accessibility of Zeolite Crystals in Polyimide Matrices. A Route to Coatings Exhibiting Selective Permeation |
| title_full_unstemmed | Study of the Accessibility of Zeolite Crystals in Polyimide Matrices. A Route to Coatings Exhibiting Selective Permeation |
| title_short | Study of the Accessibility of Zeolite Crystals in Polyimide Matrices. A Route to Coatings Exhibiting Selective Permeation |
| title_sort | study of the accessibility of zeolite crystals in polyimide matrices a route to coatings exhibiting selective permeation |
| url | https://doi.org/10.1260/026361705775373288 |
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