Title: TiO2-nanorod decorated carbon nanotubes for high-permittivity and low-dielectric-loss polystyrene composites
Abstract: Polymer composites with high permittivity and low dielectric loss are highly desirable in electronic and electrical industry. Adding conductive fillers could significantly increase the permittivity of a polymer. However, polymer composites containing conductive fillers often exhibit very high dielectric loss due to their large electrical conduction or leakage currents. In this work, by engineering TiO2-nanorod-decorated multi-walled carbon nanotubes (TD-CNTs), polystyrene (PS) composite with high permittivity and low dielectric loss have been successfully prepared. The composite containing of 17.2 vol.% TD-CNTs has a permittivity of 37 at 1 kHz, which is 13.7 times higher than that of the pure PS (2.7), while the dielectric loss still remains at a low value below 0.11. The dielectric properties of the composites are closely related to the length of CNTs and the loading level of TiO2-nanorods on the CNT surfaces.
Publication Year: 2012
Publication Date: 2012-02-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 75
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