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Effects of graphene concentration, relative density and cellular morphology on the thermal conductivity of polycarbonate–graphene nanocomposite foams
dc.contributor.author | Gedler, Gabriel |
dc.contributor.author | Antunes, Marcelo de Sousa Pais |
dc.contributor.author | Velasco Perero, José Ignacio |
dc.contributor.author | Ozisik, Rahmi |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica |
dc.date.accessioned | 2016-01-14T15:22:44Z |
dc.date.available | 2018-03-01T01:30:17Z |
dc.date.issued | 2016-02 |
dc.identifier.citation | Gedler, G., De Sousa Pais, M., Velasco J.I., Ozisik, R. Effects of graphene concentration, relative density and cellular morphology on the thermal conductivity of polycarbonate–graphene nanocomposite foams. "European polymer journal", Febrer 2016, vol. 75, p. 190-199. |
dc.identifier.issn | 0014-3057 |
dc.identifier.uri | http://hdl.handle.net/2117/81477 |
dc.description.abstract | The thermal conductivity of polycarbonate–graphene nanocomposite foams was studied as a function of relative density, developed cellular structure and graphene concentration. Two types of supercritical CO2 foaming processes were employed to obtain foams with a wide range of relative densities and cellular morphologies. The thermal conductivity of unfoamed nanocomposites increased in more than two times upon addition of 5 wt% graphene. Foaming led to lowered thermal conductivity values, as low as 0.03 W/(m K), with thermal conductivity being mainly controlled by relative density and in a lower extent by graphene concentration. Higher thermal conductivities were obtained with increasing relative density and cell size, as well as with increasing graphene concentration, especially in those cases where improved graphene dispersion was achieved with foaming. Thermal conductivity values displayed a better fit when using a three-phase model when compared to the two-phase model previously proposed for polymer composite foams. |
dc.format.extent | 10 p. |
dc.language.iso | eng |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials |
dc.subject.lcsh | Foamed materials--Testing |
dc.subject.lcsh | Nanocomposites (Materials) |
dc.subject.lcsh | Composite materials--Testing |
dc.subject.lcsh | Composite materials--Thermal properties |
dc.subject.other | Thermal conductivity |
dc.subject.other | Polycarbonate |
dc.subject.other | Graphene |
dc.subject.other | Nanocomposite foams |
dc.title | Effects of graphene concentration, relative density and cellular morphology on the thermal conductivity of polycarbonate–graphene nanocomposite foams |
dc.type | Article |
dc.subject.lemac | Nanocompòsits (Materials) -- Propietats tèrmiques |
dc.subject.lemac | Materials compostos -- Propietats tèrmiques |
dc.subject.lemac | Materials compostos -- Proves |
dc.subject.lemac | Materials escumosos -- Proves |
dc.contributor.group | Universitat Politècnica de Catalunya. POLY2 - Polyfunctional polymeric materials |
dc.identifier.doi | 10.1016/j.eurpolymj.2015.12.018 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://www.sciencedirect.com/science/article/pii/S0014305715300975 |
dc.rights.access | Open Access |
local.identifier.drac | 17390751 |
dc.description.version | Postprint (author's final draft) |
local.citation.author | Gedler, G.; De Sousa Pais, M.; Velasco, J.I.; Ozisik, R. |
local.citation.publicationName | European polymer journal |
local.citation.volume | 75 |
local.citation.startingPage | 190 |
local.citation.endingPage | 199 |
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