Author(s):
1. Blanka Skipina, Faculty of Technology Banja Luka, Republic of Srpska, Bosnia and Herzegovina
2. Adriann Luyt, Center for Advanced Materials, Qatar
3. Duško Dudić, Department of Chemistry, University of the Free State, Private Bag X13, Phuthaditjhaba, 9866 South A, Serbia

Abstract:
Poly Carbonate (PC) and polybutylene terephthalate (PBT) composites with 15 wt.% carbon nanotubes (CNT) were commercial produced and received from NANOCYL. Pure PC and PBT have good isolation properties, but CNT filled composites induce electrical conductivity to polymer matrix by forming a conducting particle network within the polymer matrix. The application of the polymer/CNT composites under different temperatures is the subject of many researchers and also effect of UV-Vis radiation on their dielectric properties because of solar cell application. Surface dielectric conductanse of composites is 10 orders of magnitude higher then conductanse of pure PC or PBT. The surface dielectric conductance and susceptance of PBT/CNT increase with increasing temperature, giving rise to a positive temperature conductive coefficient (TCC), but PC/CNT has been showed negative TCC in temperature range from 38 – 56 ⁰C. Measurements were performed in the frequency range from 10 Hz to 100 kHz. We were found slight frequency dependance of conductance, but susceptance increase with increasing of frequency in low frequency range by one order of magnitude. Furthermore, the surface conductance increase during UV-Vis radiation. The increase of surface conductance of composites has been more pronounced at elevated temperatures. Increase of the susceptance with UV-Vis radiation was negligible.

Key words:
Temperature Conductive Coefficient,Photodielectric Properties,Carbon nanotube,Polymer Nanocomposite

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
28.06.2016.

Conference:
Contemporary Materials 2016 - Savremeni Materijali