Effect of TiO{sub 2} nano fillers on the electrical conductivity of PSAN/TiO{sub 2} polymer nanocomposites

The microstructural characterization of Polystyrene co-acrylonitrile and Titanium dioxide (PSAN/TiO{sub 2}) nanocomposites has been performed by Positron Annihilation Lifetime Spectroscopy. The decrease of positron lifetime parameters viz. o-Ps lifetime (τ{sub 3}) and free volume size (V{sub f}) up...

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Bibliographic Details
Published in:AIP conference proceedings 2016-05, Vol.1731 (1)
Main Authors: Ningaraju, S., Munirathnamma, L. M., Kumar, K. V. Aneesh, Ravikumar, H. B.
Format: Article
Language:English
Subjects:
ACRYLONITRILE
ANNIHILATION
CONCENTRATION RATIO
ELECTRIC CONDUCTIVITY
FILLERS
HOLES
INTERFACES
LIFETIME
MICROSTRUCTURE
NANOCOMPOSITES
NANOPARTICLES
NANOSCIENCE AND NANOTECHNOLOGY
NANOSTRUCTURES
POLYSTYRENE
POSITRONS
SPACE CHARGE
SPECTROSCOPY
TITANIUM
TITANIUM OXIDES
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Summary:The microstructural characterization of Polystyrene co-acrylonitrile and Titanium dioxide (PSAN/TiO{sub 2}) nanocomposites has been performed by Positron Annihilation Lifetime Spectroscopy. The decrease of positron lifetime parameters viz. o-Ps lifetime (τ{sub 3}) and free volume size (V{sub f}) up to 0.6 wt% of TiO{sub 2} is attributed to the filling of free volume holes by TiO{sub 2} nanoparticles. The increased free volume size (V{sub f}) after 0.6 wt% of TiO{sub 2} indicates the formation of interface due to TiO{sub 2} nanoclusters. The variation of electrical conductivity at the lower and higher concentration of TiO{sub 2} in (PSAN/TiO{sub 2}) nanocomposites is attributed to the blocking effect and space charge effect respectively.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4947923