Conductivity percolation of carbon nanotubes (CNT) in polystyrene (PS) latex film

dc.contributor.authorUğur, Şaziye
dc.contributor.authorYargı, Önder
dc.contributor.authorPekcan, Önder
dc.date.accessioned2019-06-27T08:05:15Z
dc.date.available2019-06-27T08:05:15Z
dc.date.issued2010
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Biyoinformatik ve Genetik Bölümüen_US
dc.description.abstractIn this study the effect of multiwalled carbon nanotubes (MWNT) on film formation behaviour and electrical conductivity properties of polystrene (PS) latex film was investigated by using the photon transmission technique and electrical conductivity measurements. Films were prepared by mixing PS latex with different amounts of MWNTs varying in the range between 0 and 20 wt%. After drying MWNT content films were separately annealed above the glass transition temperature (T-g) of PS ranging from 100 to 270 degrees C for 10 min. To monitor film formation behavior of PS-MWNT composites transmitted light intensity I-tr was measured after each annealing step. The surface conductivity of annealed films at 170 degrees C was measured and found to increase dramatically above a certain fraction of MWNT (4 wt%) following the percolation theory. This fraction was defined as the percolation threshold of conductivity R-c. The conductivity scales with the mass fraction of MWNT as a power law with exponent 2.27 which is extremely close to the value of 2.0 predicted by percolation theory. In addition the increase in I-tr during annealing was explained by void closure and interdiffusion processes. Film formation stages were modeled and the corresponding activation energies were measured.en_US]
dc.identifier.citation21
dc.identifier.doi10.1139/V09-173en_US
dc.identifier.endpage276
dc.identifier.issn0008-4042en_US
dc.identifier.issn1480-3291en_US
dc.identifier.issn0008-4042
dc.identifier.issn1480-3291
dc.identifier.issue3
dc.identifier.scopus2-s2.0-77949302732en_US
dc.identifier.scopusqualityQ3
dc.identifier.startpage267en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12469/1051
dc.identifier.urihttps://doi.org/10.1139/V09-173
dc.identifier.volume88en_US
dc.identifier.wosWOS:000276554000012en_US
dc.identifier.wosqualityN/A
dc.institutionauthorPekcan, Önderen_US
dc.language.isoenen_US
dc.publisherCanadian Science Publishing Nrc Research Pressen_US
dc.relation.journalCanadian Journal Of Chemistryen_US
dc.relation.publicationcategoryDiğeren_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectMultiwalled carbon nanotubesen_US
dc.subjectPolystyreneen_US
dc.subjectLatexen_US
dc.subjectNanocompositesen_US
dc.subjectConductivityen_US
dc.subjectTransmissionen_US
dc.subjectPercolationen_US
dc.subjectFilm formationen_US
dc.titleConductivity percolation of carbon nanotubes (CNT) in polystyrene (PS) latex filmen_US
dc.typeReviewen_US
dspace.entity.typePublication

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