TY - GEN
T1 - The Effect of Graphene Dispersion on the Electrical Properties of Polyimide Nanocomposites
AU - Benfridja, Imadeddine
AU - Diaham, Sombel
AU - Stenson, Bernard
AU - Chen, Baoxing
AU - Kennedy, Tadhg
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - Graphene-based polymer nanocomposites have attracted widespread industrial interest as the electrical conductivity of the material can be precisely controlled due to the unique conduction properties of graphene. In this paper, we show the effect of exfoliation methods and dispersion time on the particle dispersion, aggregate size and the overall electrical conduction of polyimide/graphene nanocomposites. A set of polyimide films with a varying graphene nanoflake content were prepared by thermal imidization and electrically characterised to assess the impact of the composition of the nanocomposite on the electrical percolation threshold. Three dispersion techniques were investigated (i.e. high shear mixing, ultrasonication probe and planetary mixing) and it was found that the size of the graphene nanoflakes was reduced by increasing the dispersion time in each case. The highest dispersion quality was obtained using the high shear mixing technique which yielded an electrical percolation threshold of 0.03 wt%.
AB - Graphene-based polymer nanocomposites have attracted widespread industrial interest as the electrical conductivity of the material can be precisely controlled due to the unique conduction properties of graphene. In this paper, we show the effect of exfoliation methods and dispersion time on the particle dispersion, aggregate size and the overall electrical conduction of polyimide/graphene nanocomposites. A set of polyimide films with a varying graphene nanoflake content were prepared by thermal imidization and electrically characterised to assess the impact of the composition of the nanocomposite on the electrical percolation threshold. Three dispersion techniques were investigated (i.e. high shear mixing, ultrasonication probe and planetary mixing) and it was found that the size of the graphene nanoflakes was reduced by increasing the dispersion time in each case. The highest dispersion quality was obtained using the high shear mixing technique which yielded an electrical percolation threshold of 0.03 wt%.
UR - http://www.scopus.com/inward/record.url?scp=85126051145&partnerID=8YFLogxK
U2 - 10.1109/CEIDP50766.2021.9705447
DO - 10.1109/CEIDP50766.2021.9705447
M3 - Conference contribution
AN - SCOPUS:85126051145
T3 - Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
SP - 671
EP - 674
BT - 96th IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2021 - co-located with 16th IEEE Nanotechnology Materials and Devices Conference, NMDC 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 96th IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2021
Y2 - 12 December 2021 through 15 December 2021
ER -