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Synthesis and characterization of polybenzoxazole/graphene oxide composites via in situ polymerization

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2013, 14(4), pp.251-254
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General

임준 1 김민철 2 Munju Goh 1 신동근 1 Bon-Cheol Ku 1 Hyeonuk Yeo 1 유남호 1

1한국과학기술연구원
2조선대학교

Accredited

ABSTRACT

In this study, poly(amic acid) was prepared via a polycondensation reaction of 3,3’-dihydroxybenzidine and pyromellitic dianhydride in an N-methyl-2-pyrrolidone solution; reduced graphene oxide/polybenzoxazole (r-GO/PBO) composite films, which significantly increased the electrical conductivity, were successfully fabricated. GO was prepared from graphite using Brodie’s method. The GO was used as nanofillers for the preparation of r-GO/PBO composites through an in situ polymerization. The addition of 50 wt% GO led to a significant increase in the electrical conductivity of the composite films by more than sixteen orders of magnitude compared with that of pure PBO films as a result of the electrical percolation networks in the r-GO during the thermal treatment at various temperatures within the films.

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