In Situ Exfoliation of Graphite into Graphene Nanosheets
in Elastomer Composites Based on Diels–Alder Reaction during
Melt Blending
Posted on 2019-07-11 - 19:44
We
developed a new technique to in situ exfoliate graphite into
graphene nanosheets and simultaneously prepare graphene nanosheets/elastomer
composites based on the Diels–Alder (DA) reaction under strong
shearing force transferred by the hydrogenated nitrile butadiene rubber
(HNBR) during melt mixing. To realize the DA reaction, expanded graphite
(EG) was used as a diene and maleic anhydride (MA) was chosen as the
dienophile. The results show the efficient functionalization and exfoliation
of EG into MA-functionalized graphene nanosheets (MAG), the good dispersion
of MAG, and the formation of the MAG network structure in MAG/HNBR
composites at low content of MAG (∼1 wt %). These result in
the significant increase in stress at certain strain and the electrical
conductivity of MAG/HNBR composites over that of neat HNBR and EG/HNBR
composites with 1 wt % MAG. Unlike the method used in solution, this
method could be applied in industry for large-scale preparation of
graphene nanosheets and their elastomer composites.
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Feng, Zhanbin; Zuo, Hongli; Hu, Jing; Yu, Bing; Ning, Nanying; Tian, Ming; et al. (2019). In Situ Exfoliation of Graphite into Graphene Nanosheets
in Elastomer Composites Based on Diels–Alder Reaction during
Melt Blending. ACS Publications. Collection. https://doi.org/10.1021/acs.iecr.9b02580
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AUTHORS (7)
ZF
Zhanbin Feng
HZ
Hongli Zuo
JH
Jing Hu
BY
Bing Yu
NN
Nanying Ning
MT
Ming Tian
LZ
Liqun Zhang