Effect of TiO2 Nano Fillers on the Electrical Conductivity of PSAN/TiO2 Polymer Nanocomposites

被引:3
|
作者
Ningaraju, S. [1 ]
Munirathnamma, L. M. [1 ]
Kumar, K. V. Aneesh [1 ]
Ravikumar, H. B. [1 ]
机构
[1] Univ Mysore, Dept Studies Phys, Mysore 570006, Karnataka, India
来源
关键词
free volume; nano-clusters; blocking effect; Space charge effect;
D O I
10.1063/1.4947923
中图分类号
O59 [应用物理学];
学科分类号
摘要
The microstructural characterization of Polystyrene co-acrylonitrile and Titanium dioxide (PSAN/TiO2) nanocomposites has been performed by Positron Annihilation Lifetime Spectroscopy. The decrease of positron lifetime parameters viz. o-Ps lifetime (tau(3)) and free volume size (V-f) up to 0.6 wt% of TiO2 is attributed to the filling of free volume holes by TiO2 nanoparticles. The increased free volume size (Vf) after 0.6 wt% of TiO2 indicates the formation of interface due to TiO2 nanoclusters. The variation of electrical conductivity at the lower and higher concentration of TiO2 in (PSAN/TiO2) nanocomposites is attributed to the blocking effect and space charge effect respectively.
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页数:3
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