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Reduced Graphene Oxide (rGO)/ZrO 2 Reinforced Polyimide Nanocomposite Aerogels with Enhanced Properties: A Synergistic Effect of the Nanofillers
Author(s) -
Wu Yushuang,
Zhang Xin,
Guo Yi,
Wang Xinbo
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201902542
Subject(s) - polyimide , nanocomposite , materials science , graphene , oxide , porosity , composite material , thermal conductivity , monomer , chemical engineering , layer (electronics) , nanotechnology , polymer , engineering , metallurgy
In this paper, linear‐structured polyimide (PI) nanocomposite aerogels were fabricated with incorporation of graphene oxide (GO) and nano‐sized zirconium dioxide (ZrO 2 ) via a freeze‐drying route. SEM images indicate GO and ZrO 2 dispersed well in PI network skeletons after imidization. GO and ZrO 2 can improve physical properties not only separately but also synergistically, generating excellent performances of the nanocomposite aerogels with the density of 70 mg cm −3 , porosity of 95%, shrinkage of 19% and thermal conductivity of 0.0266 W m −1 k −1 . This facile route using rational physical incorporation of nanofillers instead of expensive multi‐functional monomers distinctly improves overall performances of the prepared PI nanocomposite aerogels.