Synthesis of polymer composites thin films of Cr₂O₃ nanoparticles and study of its optical and electrical properties

6^th International Conference and Exhibition on Materials Science and Engineering

September 12-14, 2016 Atlanta, USA

Venkatesha.B.M, Rakesh, Radhika. R.T and Ananda. S

Department of Chemistry, University of Mysore, Mysuru-570005, India
Deparment of Studies in Chemistry, University of Mysore, India
Maharani�s science College for women, India

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

Cr2O3 nanoparticles were synthesized by biological method using neem plant extract. The synthesized nanoparticles are characterized by SEM, UV-Vis, FT-IR and XRD methods. The size of the nanoparticles were shown to be 35.5nm. This synthesized Cr2O3 nanoparticles were embedded in PVA polymert. The strustural, electrical and optical properties of nanocomposite films were studied experimentally. The effect of concentration of PVA on PVA films and concentration of Cr2O3 nanoparticles were studied. The structural properties are studied using X-ray diffraction, SEM and FT-IR spectra. Optical property is studied using UV-Vis spectroscopy. Results showed number of Braggs planes in the structure of polymer and its crystallinity are increased notiecbly. The �» max of Cr2O3 nanoparticles undergoes a blue shift toward the lower wavelength after embedding. Scanning electron microscopy shows that the prepared Cr2O3 nanoparticles were despersed and nearly uniform in diameter within the polymeric matrix. Frequency dependent conductivity, photo-voltaic activity and viscosity measurements of PVA and PVA/Cr2O3 nanocomposites films/ solutions are also compared. The induced structural changes are revealed through XRD and FT-IR spectroscopy. The synthesized Cr2O3 nanoparticles showed very good biological activity and acts as a catalyst for KMnO4 decomposition with the evolution of O2, which plays an important role in renewable source of energy.

Biography :

Venkatesha B. M. has completed his PhD at the age of 30 years from University of Mysore and joined as lecterer in Chemistry University of Mysore. At present, he is the Associate professor and co-ordinator for post graduate dept of Chemistry, Yuvaraja’s college, University of Mysore, Mysuru. He has served as Head of the Department of Chemistry, Chairman and Member of BOS and BOE for Yuvaraja’s college (Atonomous), University of Mysore as well as other universities like Bangalore University, Tumkur University and Kuvempu University. He has successfully guided three candidates towords their PhD degree and published more than 32 research papers in reputed journal.

Email: venkichem123@yahoo.in