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Electromagnetic radiation shielding by composites of conducting polymers and wood

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dc.title Electromagnetic radiation shielding by composites of conducting polymers and wood en
dc.contributor.author Sapurina, Irina Yu.
dc.contributor.author Kazantseva, Natalia E.
dc.contributor.author Ryvkina, Natalia
dc.contributor.author Prokeš, Jan
dc.contributor.author Sáha, Petr
dc.contributor.author Stejskal, Jaroslav
dc.relation.ispartof Journal of Applied Polymer Science
dc.identifier.issn 0021-8995 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2005-02-15
utb.relation.volume 95
utb.relation.issue 4
dc.citation.spage 807
dc.citation.epage 814
dc.type article
dc.language.iso en
dc.publisher John Wiley & Sons, Inc. en
dc.identifier.doi 10.1002/app.21240
dc.relation.uri http://onlinelibrary.wiley.com/doi/10.1002/app.21240/abstract
dc.subject polyaniline en
dc.subject polypyrrole en
dc.subject fir en
dc.subject oak en
dc.subject wood en
dc.subject composites en
dc.subject conducting polymers en
dc.subject conductivity ageing en
dc.subject electromagnetic en
dc.subject radiation en
dc.subject radiation shielding en
dc.description.abstract Polyaniline or polypyrrole composites with fir or oak wood have been prepared by in situ polymerization of the corresponding monomers in an aqueous suspension of wood sawdust. The percolation threshold of compressed coated particles is located below 5 wt % of the conducting component and, above this limit, the conductivity of most composites was higher than 10(-3) S cm(-1). The conductivity of composites containing ca 30 wt % of conducting polymer was of the order of 10(-1) S cm(-1), an order of magnitude lower than that of the corresponding homopolymers, polyaniline and polypyrrole. The conductivity stability has been tested at 175degreesC. The polypyrrole-based composites generally lasted for a longer time than pyrrole homopolymers, also on account of the improved mechanical integrity of the samples provided by the presence of wood. The reverse order was found with polyaniline composites. The dielectric properties of the composites were determined in the range of 100 MHz-3 GHz, indicating that thick layers of composite material, similar to 100 mm, are needed for the screening of the electromagnetic radiation below similar to10 dB level in this frequency range. Nevertheless, considering the potential production cost of composites and their low weight, such composite materials could be of practical interest in the shielding of electromagnetic interference. (C) 2004 Wiley Periodicals, Inc. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1002051
utb.identifier.scopus 2-s2.0-12344313477
utb.identifier.wok 000226181100004
utb.identifier.coden JAPNA
utb.source j-wok
dc.date.accessioned 2011-08-16T15:06:17Z
dc.date.available 2011-08-16T15:06:17Z
utb.contributor.internalauthor Sáha, Petr
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