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dc.contributor.author양철민-
dc.contributor.author이윤선-
dc.contributor.authorM. Wasim Akhtar-
dc.contributor.author김종석-
dc.date.accessioned2021-06-09T04:16:58Z-
dc.date.available2021-06-09T04:16:58Z-
dc.date.issued2016-10-
dc.identifier.citationVOL 6, NO 102-100458-
dc.identifier.issn2046-2069-
dc.identifier.other47624-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/64892-
dc.description.abstractIn this study, an effective and novel method was developed to improve the thermal conductivity of epoxy composites by functionalization of graphene. The functionalization of graphene was carried out with a simple refluxing method using a double N-precursor with O-phenylenediamine (OPD), in which the graphene was first treated with acid (2 : 6 molar H2SO4 : HNO3) to form oxygen containing groups on the graphene surface (O-graphene). Amidation and nucleophilic addition reactions through amine groups in OPD contributed significantly to the doping of nitrogen into the graphene layers. The OPD functionalized graphene (OPD-f-graphene) was highly effective and compatible with an epoxy matrix, resulting in homogenous dispersion of a filler in the matrix. The in-plane and through-plane thermal conductivity of the functionalized graphene filled epoxy composite (fG-epoxy) was significantly increased similar to 13 fold and similar to 4.8 fold, respectively, in comparison to the neat epoxy composite (G-epoxy) with the addition of 6 wt% of the filler. This improvement in thermal conductivity was attributed to better dispersion of the filler into fG-epoxy which generated phonon conduction pathways.-
dc.publisherRSC advances-
dc.subjectGraphene-
dc.subjectThermal coductivity-
dc.subjectepoxy-
dc.subjectcompaosites-
dc.titleFunctionalization of mild oxidized graphene with O-phenylenediamine for highly thermally conductive and thermally stable epoxy composites-
dc.typeArticle-
dc.relation.page100448100458-
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