TY - JOUR
T1 - Significantly improved dielectric properties of polylactide nanocomposites via TiO2 decorated carbon nanotubes
AU - Wu, Wei
AU - Liu, Tao
AU - Zhang, Dongli
AU - Sun, Qijun
AU - Cao, Ke
AU - Zha, Junwei
AU - Lu, Yang
AU - Wang, Bin
AU - Cao, Xianwu
AU - Feng, Yanhong
AU - Roy, Vellaisamy A.L.
AU - Li, Robert K.Y.
N1 - Publisher Copyright:
© 2019
PY - 2019/12
Y1 - 2019/12
N2 - 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.
AB - 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.
KW - Carbon nanotube
KW - Dielectric property
KW - Polylactide
KW - Titanium dioxide
UR - http://www.scopus.com/inward/record.url?scp=85072735205&partnerID=8YFLogxK
U2 - 10.1016/j.compositesa.2019.105650
DO - 10.1016/j.compositesa.2019.105650
M3 - Article
AN - SCOPUS:85072735205
SN - 1359-835X
VL - 127
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
M1 - 105650
ER -