Effect of microwave absorption study on polyaniline nanocomposites with untreated and treated double wall carbon nanotubes

Koh, Yen Nee and Mokhtar, Nurrafiqah and Phang, Sook Wai (2016) Effect of microwave absorption study on polyaniline nanocomposites with untreated and treated double wall carbon nanotubes. Polymer Composites, 39 (4). pp. 1283-1291. ISSN 0272-8397, DOI https://doi.org/10.1002/pc.24064.

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Official URL: https://doi.org/10.1002/pc.24064


Hexanoic acid (HA) doped polyaniline (PAni) nanocomposites which consist of different contents of untreated double wall carbon nanotubes (u-DWNT) and carboxyl treated DWNT (c-DWNT) with titanium dioxide nanoparticles were successfully prepared using template-free method. Fourier transform infrared, ultraviolet-visible and X-ray diffractometer spectra clearly confirmed the chemical structure of PAni nanocomposites. Thermal stability, morphology, conductivity, magnetic properties and reflection loss of PAni nanocomposites were characterized by thermogravimetric analyzer, field emission scanning electron microscope, four-point probe, vibrating sample magnetometer and microwave vector network analyzer, respectively. From this study, it is shown that electrical conductivity of PAni nanocomposites with u-DWNT possessed higher conductivity (1.23 × 10–1 to 1.31 × 100 S/cm) compared to c-DWNT (3.43 × 10–2 to 4.48 × 10–1S/cm). PAni/HA/TiO2/DWNT nanocomposites with 20% of c-DWNT have been covered by PAni layers to form the highest amount of nanorods/nanotubes. Hence, it shows high heterogeneity that will enhance the dielectric permittivity and contribute to a more disordered motion of charge carriers along the PAni backbone. Therefore, it will eventually contribute to good microwave absorption and potentially apply as an efficient electromagnetic interference shielding material in cell phones.

Item Type: Article
Additional Information: Koh, Yen Nee & Mokhtar, Nurrafiqah. Faculty of Science, Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
Uncontrolled Keywords: Double wall carbon nanotube; Electromagnetic interference shielding materials; Field emission scanning electron microscopes; Fourier transform infra reds; Polyaniline nanocomposites; Thermogravimetric analyzers; Titanium dioxide nanoparticles; Vibrating sample magnetometer
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Faculty of Science > Department of Chemistry
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 09 Jul 2019 08:15
Last Modified: 09 Jul 2019 08:15
URI: http://eprints.um.edu.my/id/eprint/21596

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