Dielectrical properties of PANI/TiO{sub 2} nanocomposites

Journal Article · Mon May 23 04:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4947720· OSTI ID:22606304

Chaturmukha, V. S.; Naveen, C. S.; Rajeeva, M. P.; Avinash, B. S.; Jayanna, H. S.

Conducting polyaniline/titanium dioxide (PANI/TiO{sub 2}) composites have been succesfully synthesized by insitu polymerization technique. The PANI/TiO{sub 2} nanocomposites of different compositions were prepared by varying weight percentage of TiO{sub 2} nanoparticles such as 10 wt%, 20 wt%, 30 wt%, 40 wt% and 50 wt% into the fixed amount of the aniline monomer. The prepared powder samples were characterized by X-ray diffractometer (XRD) and Scanning electron microscope (SEM). The intensity of diffraction peaks for PANI/TiO{sub 2} composites is lower than that for TiO{sub 2}. SEM pictures show that the nanocomposite were prepared in the form of long PANi chains decorated with TiO{sub 2} nanoparticles. The dielectric properties and AC conductivity were studied in the frequency range1K Hz–10M Hz. At higher frequencies, the composites exhibit almost zero dielectric loss and maximum value of σ{sub ac} is found for a concentration of 20 wt% TiO{sub 2} in polyaniline. The interface between polyaniline and TiO{sub 2} plays an important role in yielding a large dielectric constant in nanocomposites.

• OSTI ID: 22606304
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1731; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CONCENTRATION RATIO
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
ELECTRON SCANNING
INTERFACES
LOSSES
MONOMERS
NANOCOMPOSITES
NANOPARTICLES
PERMITTIVITY
POLYMERIZATION
POWDERS
SCANNING ELECTRON MICROSCOPY
TITANIUM
TITANIUM OXIDES
X-RAY DIFFRACTION
X-RAY DIFFRACTOMETERS