Varistor-Like Effect in Zinc Oxide Bionanocomposite

Abstract:

Bionanocomposites (BNCs) were prepared using sago starch (SS) based polymer embedded with nanorods zinc oxide (ZnO-N) as nanofiller. The percentage of ZnO-N was varied from 2 weight percent (wt %) to 10 wt % of total solid. Transmission electron microscope (TEM) and scanning electron microscope (SEM) were used to analyze the morphology and dispersion of ZnO-N in BNCs. Raman spectroscopy analysis showed the present of ZnO-N in BNCs not forming new chemical bonding instead a physical interaction occur between the nanofillers and BNCs. Current-field density behavior of BNCs in low voltage region showed nonlinear current-voltage behavior and the value of resistance increases as the applied voltage increases. Breakdown voltage has been achieved at field density in the range of 500 to 900V depends on the concentration of nanofiller.

• Periodical: Advanced Materials Research (Volume 626)
• Pages: 743-746
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.626.743
• Online since: December 2012
• Authors: M. Aizuddin Abdul Rahman, Shahrom Mahmud, Rabab Khalid Sendi, Abdul Karim Alias
• Keywords: Bionanocomposite, Conductivity, Current-Field Density, Nanorods Zinc Oxide, Non-Linear Coefficient, Raman Spectroscopy, Resistivity, Sago Starch

References

[1] D. R. Clarke: submitted to Journal of the American Ceramic Society (1999).

[2] W. G. Carlson and T. K. Gupta: Submitted to Journal of Applied Science (1982).

[3] T. K. Gupta: submitted to Journal of American Ceramic Society (1990).

[4] Shahrom Mahmud, Mat Johar Abdullah, John Chong, Abdul Karim Mohamad and Mohd Zamzam Zakaria: submitted to Journal of Crystal Growth (2006).

[5] M. N. Abdorreza, L. H. Cheng, A. A. Karim: submitted to Journal of Food Hydrocolloids (2011).

[6] R. Strumpler, J. Glatz-Reichenbach: submitted to Journal of Electroceramic (1999).