Significantly improved dielectric properties of polylactide nanocomposites via TiO2 decorated carbon nanotubes

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Article number105650
Journal / PublicationComposites Part A: Applied Science and Manufacturing
Volume127
Online published28 Sep 2019
Publication statusPublished - Dec 2019

Abstract

Titanium dioxide decorated multi-walled carbon nanotubes (MWCNTs@TiO2) were fabricated in aqueous solution via a facile sol-gel method. The results of TEM, XRD, XPS and TGA confirmed that TiO2 had been coated on the surface of MWCNTs successfully. The polylactide (PLA) nanocomposites containing various content of MWCNTs@TiO2 were prepared by a solution mixing method, followed by a hot compression process. The results revealed that the introduction of MWCNTs@TiO2 enhanced the thermal stability and crystallinity of PLA without affecting the crystal phase. Moreover, the PLA nanocomposite containing of 5 wt% MWCNTs@TiO2 had a dielectric constant of 26.6, which was 8.3 times higher than that of the pure PLA (3.2), while the dielectric loss still remains at a low value of 0.2 at 1000 Hz. The decorated TiO2 nanoparticles on the surface of MWCNTs could serve as insulating layers to suppress the dielectric loss effectively.

Research Area(s)

  • Carbon nanotube, Dielectric property, Polylactide, Titanium dioxide

Citation Format(s)

Significantly improved dielectric properties of polylactide nanocomposites via TiO2 decorated carbon nanotubes. / Wu, Wei; Liu, Tao; Zhang, Dongli; Sun, Qijun; Cao, Ke; Zha, Junwei; Lu, Yang; Wang, Bin; Cao, Xianwu; Feng, Yanhong; Roy, Vellaisamy A.L.; Li, Robert K.Y.

In: Composites Part A: Applied Science and Manufacturing, Vol. 127, 105650, 12.2019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review