Effect of hydroiodic acid-reduction of graphene oxide on electrical properties of polybenzimidazobenzophenanthroline/graphene oxide nanocomposites

Arup Choudhury; Jeong Hyun Park; Soo Young Park

doi:10.1007/s13233-013-1169-4

Effect of hydroiodic acid-reduction of graphene oxide on electrical properties of polybenzimidazobenzophenanthroline/graphene oxide nanocomposites

Arup Choudhury, Jeong Hyun Park, Soo Young Park

Kyungpook National University

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Polybenzimidazobenzophenanthroline (BBL)/graphene nanocomposites were prepared by the liquid-phase exfoliation of graphene oxide (GO) in a BBL-methanesulfonic acid solution, followed by chemical reduction with hydroiodic acid (HI). This method prevents the aggregation of GO during the reduction of the solution-cast BBL/GO nanocomposite film. The in situ generated graphene played an important role in improving the electrical conductivity of the nanocomposites prepared by HI-reduction. The electrical conductivity of the HI-reduced BBL/GO nanocomposites (BBL/rGO_HI) was ∼2.5 orders of magnitude greater than that of the BBL/GO nanocomposites with 5 wt% GO content. Raman and X-ray photoelectron spectroscopy revealed the removal of oxygen functionalities from the GO surface after HI-reduction. Structural characterization of the nanocomposites by X-ray diffraction and scanning electron microscopy exhibited good exfoliation and dispersion of both GO and HI-reduced GO (rGO_HI) nanosheets within the BBL matrix. A reasonable improvement in the thermal stability of the HI-reduced nanocomposite was also observed.

Original language	English
Pages (from-to)	1254-1262
Number of pages	9
Journal	Macromolecular Research
Volume	21
Issue number	11
DOIs	https://doi.org/10.1007/s13233-013-1169-4
State	Published - Nov 2013

Keywords

electrical properties
graphene
microstructures
polymer nanocomposites
thermal properties

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title = "Effect of hydroiodic acid-reduction of graphene oxide on electrical properties of polybenzimidazobenzophenanthroline/graphene oxide nanocomposites",

abstract = "Polybenzimidazobenzophenanthroline (BBL)/graphene nanocomposites were prepared by the liquid-phase exfoliation of graphene oxide (GO) in a BBL-methanesulfonic acid solution, followed by chemical reduction with hydroiodic acid (HI). This method prevents the aggregation of GO during the reduction of the solution-cast BBL/GO nanocomposite film. The in situ generated graphene played an important role in improving the electrical conductivity of the nanocomposites prepared by HI-reduction. The electrical conductivity of the HI-reduced BBL/GO nanocomposites (BBL/rGOHI) was ∼2.5 orders of magnitude greater than that of the BBL/GO nanocomposites with 5 wt% GO content. Raman and X-ray photoelectron spectroscopy revealed the removal of oxygen functionalities from the GO surface after HI-reduction. Structural characterization of the nanocomposites by X-ray diffraction and scanning electron microscopy exhibited good exfoliation and dispersion of both GO and HI-reduced GO (rGOHI) nanosheets within the BBL matrix. A reasonable improvement in the thermal stability of the HI-reduced nanocomposite was also observed.",

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AU - Park, Jeong Hyun

AU - Park, Soo Young

PY - 2013/11

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N2 - Polybenzimidazobenzophenanthroline (BBL)/graphene nanocomposites were prepared by the liquid-phase exfoliation of graphene oxide (GO) in a BBL-methanesulfonic acid solution, followed by chemical reduction with hydroiodic acid (HI). This method prevents the aggregation of GO during the reduction of the solution-cast BBL/GO nanocomposite film. The in situ generated graphene played an important role in improving the electrical conductivity of the nanocomposites prepared by HI-reduction. The electrical conductivity of the HI-reduced BBL/GO nanocomposites (BBL/rGOHI) was ∼2.5 orders of magnitude greater than that of the BBL/GO nanocomposites with 5 wt% GO content. Raman and X-ray photoelectron spectroscopy revealed the removal of oxygen functionalities from the GO surface after HI-reduction. Structural characterization of the nanocomposites by X-ray diffraction and scanning electron microscopy exhibited good exfoliation and dispersion of both GO and HI-reduced GO (rGOHI) nanosheets within the BBL matrix. A reasonable improvement in the thermal stability of the HI-reduced nanocomposite was also observed.

AB - Polybenzimidazobenzophenanthroline (BBL)/graphene nanocomposites were prepared by the liquid-phase exfoliation of graphene oxide (GO) in a BBL-methanesulfonic acid solution, followed by chemical reduction with hydroiodic acid (HI). This method prevents the aggregation of GO during the reduction of the solution-cast BBL/GO nanocomposite film. The in situ generated graphene played an important role in improving the electrical conductivity of the nanocomposites prepared by HI-reduction. The electrical conductivity of the HI-reduced BBL/GO nanocomposites (BBL/rGOHI) was ∼2.5 orders of magnitude greater than that of the BBL/GO nanocomposites with 5 wt% GO content. Raman and X-ray photoelectron spectroscopy revealed the removal of oxygen functionalities from the GO surface after HI-reduction. Structural characterization of the nanocomposites by X-ray diffraction and scanning electron microscopy exhibited good exfoliation and dispersion of both GO and HI-reduced GO (rGOHI) nanosheets within the BBL matrix. A reasonable improvement in the thermal stability of the HI-reduced nanocomposite was also observed.

KW - electrical properties

KW - graphene

KW - microstructures

KW - polymer nanocomposites

KW - thermal properties

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Effect of hydroiodic acid-reduction of graphene oxide on electrical properties of polybenzimidazobenzophenanthroline/graphene oxide nanocomposites

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