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Adaptation of polystyrene/multi-wall carbon nanotube composite properties in respect of its thermal stability

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dc.title Adaptation of polystyrene/multi-wall carbon nanotube composite properties in respect of its thermal stability en
dc.contributor.author Slobodian, Petr
dc.contributor.author Králová, Daniela
dc.contributor.author Lengálová, Anežka
dc.contributor.author Novotný, Radko
dc.contributor.author Sáha, Petr
dc.relation.ispartof Polymer Composites
dc.identifier.issn 0272-8397 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2010
utb.relation.volume 31
utb.relation.issue 3
dc.citation.spage 452
dc.citation.epage 458
dc.type article
dc.language.iso en
dc.publisher John Wiley & Sons, Inc. en
dc.identifier.doi 10.1002/pc.20824
dc.relation.uri http://onlinelibrary.wiley.com/doi/10.1002/pc.20824/abstract
dc.subject uhlíkové nanotrubičky cs
dc.subject teplotní stabilita cs
dc.subject kríp cs
dc.subject polymerní kompozit cs
dc.subject mikroemulzní polymerace cs
dc.subject polystyren cs
dc.subject strukturní relaxace cs
dc.subject Carbon nanotubes en
dc.subject Thermal stability en
dc.subject Creep properties en
dc.subject Polymer composite en
dc.subject Microemulsion polymerization en
dc.subject Polystyrene en
dc.subject Physical aging en
dc.description.abstract Polystyrene (PS)/multi-wall carbon nanotube (MWCNT) nanocomposites were prepared by melt mixing and by coagulation of PS/MWCNT sonicated dispersion. Before mixing and coagulation particles of MWCNT were covered with PS nanospheres by microemulsion polymerization to increase their dispersibility and compatibility with the matrix. Microemulsion polymerization was carried out under sonication in the presence of surfactants and a cross-linking agent. The structure of modified MWCNT filler was revealed by SEM and TEM microscopy analyses. They show that PS is well grafted onto surface of MWCNT in form of ca 30 nm nanospheres or as ca 3-8 nm PS film layer. Significant changes in properties were recorded mainly for the coagulated sample. Although no shift of T-g was recorded for the melt mixed composite, the coagulated sample shows an increase by 9 degrees C. Also the reinforcing effect of MWCNT was more pronounced for the same method of preparation (further supported by the filler modification). The creep response of this material shifts to longer times not only in the T-g area, but also as low as 70 degrees C below it, which is perceived as an improvement of temperature stability (the same properties kept for a longer time). This was also proved by the increase of creep modulus, and consequently by the prolonged time needed to reach the same tensile creep compliance after aging. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1001102
utb.identifier.rivid RIV/70883521:28110/10:63509267!RIV11-GA0-28110___
utb.identifier.obdid 43863470
utb.identifier.scopus 2-s2.0-76949086748
utb.identifier.wok 000275288500011
utb.source j-riv
dc.rights.access openAccess
utb.contributor.internalauthor Slobodian, Petr
utb.contributor.internalauthor Lengálová, Anežka
utb.contributor.internalauthor Sáha, Petr
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