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- W3118596871 endingPage "128382" @default.
- W3118596871 startingPage "128382" @default.
- W3118596871 abstract "Conductive filler/polymer composite foams (CPC) with micro-/nano-scale bubbles have attracted much attention due to their various advantages. Understanding the evolution of electrical behavior in CPC foams is important for their functional application. There have been many experimental investigations of the electrical behavior of CPC foams, but how the electrical conductivity varies with bubble growth is not fully understood. Here, a novel resistive network model based on Monte Carlo simulation to directly predict the electrical conductivity of CPC foams is reported. The model uses multiwalled carbon nanotubes (MWCNTs) as a conductive filler and considers both the intrinsic electrical conductivity of the nanotubes and the electron tunneling effect. The model predictions agreed very well with the experimental data for both the solid and foamed composites. The results showed that the percolation threshold and the conductivity are strongly affected by the relative sizes of MWCNT length and bubble diameter. At relatively low void fractions (up to ~20%), the growth of bubbles with size comparable to the MWCNT length increased the conductivity. Further growth of cells (>30%) resulted in a gradual decrease in the conductivity. This model can be used in the design and optimization of conductive foams." @default.
- W3118596871 created "2021-01-18" @default.
- W3118596871 creator A5003829662 @default.
- W3118596871 creator A5004879600 @default.
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- W3118596871 creator A5062755510 @default.
- W3118596871 creator A5071791714 @default.
- W3118596871 creator A5085376743 @default.
- W3118596871 date "2021-05-01" @default.
- W3118596871 modified "2023-10-06" @default.
- W3118596871 title "Evaluation and modeling of electrical conductivity in conductive polymer nanocomposite foams with multiwalled carbon nanotube networks" @default.
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- W3118596871 doi "https://doi.org/10.1016/j.cej.2020.128382" @default.