Abstract
The Epoxy-based Ionic Liquid/carboxylated multi-walled carbon nanotubes/polybutylene terephthalate nanocomposites (EPIL/c-MWCNTs/PBT) were prepared through melt-blending method. Due to πcation-π interactions between EPIL and c-MWCNTs, and the reaction of a carboxyl group of PBT matrices with an epoxy group of EPIL, the c-MWCNTs displayed a homogeneous dispersion in the EPIL/c-MWCNTs/PBT, which could present better electrical properties than that of c-MWCNTs/PBT composites. SEM results presented that the compatibility between of c-MWCNTs and PBT had been improved due to the excellent dispersibility of c-MWCNTs in PBT matrix Meanwhile, the crystallization temperature of EPIL/c-MWCNTs/PBT also increased to 213.4 °C, higher than that of c-MWCNTs/PBT and pure PBT. Furthermore, the EPIL/c-MWCNTs/PBT nanocomposites showed excellent 3D conducting network and exhibited a low conductivity of percolation threshold when the loading of c-MWCNTs was only 0.7 wt%. The addition of EPIL and c-MWCNTs to PBT could effectively increase the dielectric constant and the uniformly dispersed c-MWCNT in low dielectric loss, which opened a new direction for the fabrication of EPIL/c-MWCNTs/polymer nanocomposites.
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This work was financially supported by the National Natural Science Foundation of China (No.51273025).
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Lv, X., Liu, C., Wu, D. et al. Epoxy-based ionic liquid towards multi-walled carbon nanotubes/polybutylene terephthalate composite with excellent dispersion and conductivity behaviors. J Polym Res 27, 237 (2020). https://doi.org/10.1007/s10965-020-02224-z
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DOI: https://doi.org/10.1007/s10965-020-02224-z