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Construction of a 3D multiple network skeleton by the thiol-Michael addition click reaction to fabricate novel polymer/graphene aerogels with exceptional thermal conductivity and mechanical properties

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Abstract

Novel porous polymer/graphene composite aerogels with a multiple network structure, enhanced compressive properties and high thermal conductivity are first fabricated by adsorbing water vapour, reduction, and freeze-drying procedures. The aerogels are comprised of a copolymer of monomethacrylate terminated poly(dimethylsiloxane) and glycidyl methacrylate (PDMS–PGMA), polydopamine–reduced graphene oxide (PDA–rGO), and poly(3-mercaptopropyl)methylsiloxane (PMMS). PMMS as a crosslinking agent reacts with PDMS–PGMA and PDA–rGO by the thiol-Michael addition click reaction, resulting in the formation of unique multiple networks in the aerogels. An aerogel with a low graphene loading (2 wt%) exhibits optimal comprehensive performance, i.e. a high thermal conductivity (0.816 W m−1 K−1), high compressive stress at 50% compression ratio (3.4 MPa) and good oil-adsorption capacities. These outstanding properties of aerogels are attributed to the multiple networks and the interconnected PDA–rGO skeleton. The aerogels have potential applications in heat radiating elements, oil/water separators and high performance materials.

Graphical abstract: Construction of a 3D multiple network skeleton by the thiol-Michael addition click reaction to fabricate novel polymer/graphene aerogels with exceptional thermal conductivity and mechanical properties

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Publication details

The article was received on 14 Aug 2017, accepted on 27 Sep 2017 and first published on 27 Sep 2017


Article type: Paper
DOI: 10.1039/C7TA07173F
Citation: J. Mater. Chem. A, 2017, Advance Article
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    Construction of a 3D multiple network skeleton by the thiol-Michael addition click reaction to fabricate novel polymer/graphene aerogels with exceptional thermal conductivity and mechanical properties

    S. Song and Y. Zhang, J. Mater. Chem. A, 2017, Advance Article , DOI: 10.1039/C7TA07173F

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