Open AccessOptimising the dielectric property of carbon nanotubes/P(VDF‐CTFE) nanocomposites by tailoring the shell thickness of liquid crystalline polymer modified layer
Author(s) -
Zhou Yang,
Luo Hang,
Chen Sheng,
Han Xianghui,
Zhang Dou
Publication year - 2019
Publication title -
iet nanodielectrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.23
H-Index - 9
ISSN - 2514-3255
DOI - 10.1049/iet-nde.2019.0028
Subject(s) - materials science , dielectric , nanocomposite , carbon nanotube , composite material , polymer , polymer nanocomposite , monomer , dielectric loss , layer (electronics) , optoelectronics
Interfacial modification is a good approach to improve the dielectric properties of nanocomposites. However, there are few reports to study the influence of interfacial modified thickness. In this study, the graft‐from strategy was adopted to introduce the rigid liquid crystalline fluoropolymer (poly[2,5‐bis[(4‐trifluoromethoxyphenyl)‐oxycarbonyl]] styrene (PTFMS) onto the surface of carbon nanotubes (CNT). The shell thickness increased from 20 ± 3 to 62 ± 6 nm via controlling the ratio of monomer to the initiator. The results indicated that the dielectric properties of the P(VDF‐CTFE) nanocomposites with the modified CNT were significantly enhanced compared with those original CNT, and the maximum dielectric constant of nanocomposites with 1.25 vol% CNT@PTFMS containing the thickest thickness reached 36 at 40 Hz due to the highest micro‐capacitors, which was 360% than the neat P(VDF‐CTFE). This work provides the perspective to understand the relationship between the shell thickness and dielectric property of polymer nanocomposites based on conductive fillers.