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Preparation of conducting polysiloxane/polyaniline composites
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SYSNO ASEP 0445036 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Preparation of conducting polysiloxane/polyaniline composites Author(s) Depa, Katarzyna (UMCH-V)
Strachota, Adam (UMCH-V) RID, ORCID
Stejskal, Jaroslav (UMCH-V) RID, ORCID, SAI
Bober, Patrycja (UMCH-V) RID, ORCID, SAI
Cimrová, Věra (UMCH-V) RID, ORCID
Prokeš, J. (CZ)
Trchová, Miroslava (UMCH-V) RID, ORCID
Šlouf, Miroslav (UMCH-V) RID, ORCID
Hodan, Jiří (UMCH-V)Source Title Journal of Applied Polymer Science. - : Wiley - ISSN 0021-8995
Roč. 132, č. 35 (2015), 42429_1-42429_11Number of pages 11 s. Language eng - English Country US - United States Keywords coatings ; composites ; conducting polymers Subject RIV JI - Composite Materials R&D Projects GAP107/12/2445 GA ČR - Czech Science Foundation (CSF) GA13-26542S GA ČR - Czech Science Foundation (CSF) Institutional support UMCH-V - RVO:61389013 UT WOS 000356812400007 EID SCOPUS 84933180348 DOI 10.1002/app.42429 Annotation Polysiloxane/polyaniline microcomposites were prepared, in which polyaniline particles act as filler, thus combining the mechanical properties of polysiloxane matrix with conductivity of polyaniline. Two syntheses were evaluated: (1) homogeneous dispersion of a polyaniline colloid in the reaction mixture from which the polysiloxane matrix subsequently formed, and (2) the blending of previously prepared dry polyaniline particles with a liquid oligomeric siloxane resin followed by cure (“heterogeneous method”). Both methods lead to composites with evenly distributed filler. Electrical conductivity was achieved above 40 wt % of polyaniline, which is better obtained by the “heterogeneous” method. During the composite cure, the polyaniline particles, which are softer than the matrix, act as a catalyst and cause more efficient matrix crosslinking, thus leading to somewhat raised moduli. Although particulate fillers usually deteriorate the impact toughness, in the case of the prepared composites, the impact toughness was preserved due to the softer consistence of the filler, which hinders crack propagation. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2016
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