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Electromagnetic shielding effectiveness of polycarbonate/graphene nanocomposite foams processed in 2-steps with supercritical carbon dioxide
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 | 2015-12-09T10:57:16Z |
dc.date.available | 2017-12-01T01:30:27Z |
dc.date.issued | 2015 |
dc.identifier.citation | Gedler, G., De Sousa Pais, M., Velasco J.I., Ozisik, R. Electromagnetic shielding effectiveness of polycarbonate/graphene nanocomposite foams processed in 2-steps with supercritical carbon dioxide. "Materials letters", 2015, vol. 160, p. 41-44. |
dc.identifier.issn | 0167-577X |
dc.identifier.uri | http://hdl.handle.net/2117/80297 |
dc.description.abstract | The electromagnetic interference (EMI) shielding properties of polycarbonate/graphene composites foamed with supercritical carbon dioxide were investigated as a function of cellular morphology and graphene particle dispersion. The 2-step foaming method used was found to improve graphene dispersion and led to a different cellular structure compared to traditional 1-step foaming. Reflection was found to be the dominant EMI shielding mechanism and EMI shielding effectiveness was improved with large cell morphology that promoted isotropic/random orientation of graphene particles. A maximum EMI specific shielding effectiveness of 78 dB·cm3/g was achieved in foams, which was more than 70 times higher than that of the unfoamed polymer(1.1 dB·cm3/g). The study shows that by controlling foaming process conditions and nanoparticle characteristics, it is possible to improve multiple properties while achieving lightweight materials suitable for various applications. |
dc.format.extent | 4 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 |
dc.subject.lcsh | Porous materials |
dc.subject.lcsh | Polymeric composites |
dc.subject.lcsh | Graphene |
dc.subject.lcsh | Electron microscopy |
dc.subject.other | Porous materials |
dc.subject.other | Polymeric composites |
dc.subject.other | Graphene |
dc.subject.other | X-ray techniques |
dc.subject.other | Electron microscopy |
dc.title | Electromagnetic shielding effectiveness of polycarbonate/graphene nanocomposite foams processed in 2-steps with supercritical carbon dioxide |
dc.type | Article |
dc.subject.lemac | Materials porosos |
dc.subject.lemac | Compostos polimèrics |
dc.subject.lemac | Grafè |
dc.subject.lemac | Microscòpia electrònica |
dc.subject.lemac | Raigs X |
dc.contributor.group | Universitat Politècnica de Catalunya. POLY2 - Polyfunctional polymeric materials |
dc.identifier.doi | 10.1016/j.matlet.2015.07.070 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://www.sciencedirect.com/science/article/pii/S0167577X1530269X |
dc.rights.access | Open Access |
local.identifier.drac | 16841948 |
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 | Materials letters |
local.citation.volume | 160 |
local.citation.startingPage | 41 |
local.citation.endingPage | 44 |
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