Gelation electrical conductivity and elasticity of PAM- MWNT
dc.contributor.author | Evingür, Gülşen Akin | |
dc.contributor.author | Pekcan, Önder | |
dc.date.accessioned | 2019-06-28T11:11:17Z | |
dc.date.available | 2019-06-28T11:11:17Z | |
dc.date.issued | 2011 | |
dc.department | Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Biyoinformatik ve Genetik Bölümü | en_US |
dc.description.abstract | Polyacrylamide- Multiwalled carbonnanotube (PAM- MWNT) composites were prepared via free radical crosslinking copolymerization with different amounts of MWNT varying in the range between 0.1 and 15 wt. %. PAM- MWNT composite gels were characterized by fluorescence dielectric spectroscopy and the tensile testing technique. A small content of doped nanotubes dramatically changed gelation time conductivity and young modulus respectively. The gel fraction exponent ? of PAM- MWNT composite gels were measured for various monomer and MWNT concentrations and observed that the gel fraction exponent ? agrees best with the percolation theory for various amounts of PAM- MWNT. These polymer systems which are initially of an isolator character are doped with carbon nanotubes of nano dimensions and when the amount of this addition exceeds a critical value (0.3 wt. % MWNT) known as the percolation threshold then composite gel systems with carbon nanotubes become electrically conducting structures with a critical exponent around r=2 which is close to the theoretical prediction of this value in 3D percolated system as known random resistor network. The observed elasticities are decreased above 3 wt. %MWNT with critical exponent around y=0.72 which is indicative of a transition from liquid-like to solid-like viscoelastic behavior. © 2011 Materials Research Society. | en_US] |
dc.identifier.citation | 1 | |
dc.identifier.doi | 10.1557/opl.2011.117 | en_US |
dc.identifier.endpage | 312 | |
dc.identifier.isbn | 9781605112893 | |
dc.identifier.issn | 0272-9172 | en_US |
dc.identifier.issn | 0272-9172 | |
dc.identifier.scopus | 2-s2.0-80053225336 | en_US |
dc.identifier.scopusquality | N/A | |
dc.identifier.startpage | 307 | en_US |
dc.identifier.uri | https://hdl.handle.net/20.500.12469/1521 | |
dc.identifier.uri | https://doi.org/10.1557/opl.2011.117 | |
dc.identifier.volume | 1312 | en_US |
dc.identifier.wosquality | N/A | |
dc.institutionauthor | Pekcan, Önder | en_US |
dc.language.iso | en | en_US |
dc.publisher | Cambridge Univ Press | en_US |
dc.relation.journal | Symposium HH/II/JJ – Polymer-Based Materials and Composites—Synthesis, Assembly and Applications | en_US |
dc.relation.publicationcategory | Konferans Öğesi - Uluslararası - Kurum Öğretim Elemanı | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.title | Gelation electrical conductivity and elasticity of PAM- MWNT | en_US |
dc.type | Conference Object | en_US |
dspace.entity.type | Publication |