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Author(s): , , , , , , , , ,

Keywords: , , , , , , , ,

Abstract: Chemically modified graphene (CMG) was obtained by combining aminopropyllsobutyl polyhedral oligomeric silsesquioxane (NH2-POSS) and hydrazine monohydrate to functionalize graphene oxide (GO). CMG and polyimide (PI) were combined to create the CMG/PI nanocomposite. The properties of this nanocomposite were obtained using a variety of methods. The thermal conductivity measurements were performed using a Hot Disk TPS 2200 instrument by utilizing the transient plane source (TPS) method. It was found that the thermal conductivity of the CMG/PI nanocomposites were all increased with increasing the CMG loading. The thermal conductivity of the CMG/PI nanocomposite with 5 wt% CMG was significantly improved to 1.05 W/mK (from 0.28 W/mK for a pristine PI matrix). The experimentally obtained thermal conductivity values and the values from the proposed thermally conductive model were also consistent with one another.

Reference: Journal of Materials Chemistry C (2018), 6:3004-3015

DOI: 10.1039/c8tc00452h