MODIFICATION IN OPTICAL AND ELECTRICAL PROPERTIES OF POLY(METHYL METHACRYLATE) ON BLENDING WITH POLYANILINE.

TOMAR, A. K.; MAHENDIA, SUMAN; KUMAR, SHYAM

The chemically synthesized Polyaniline (PAni) was characterized through UV-Visible spectroscopy. The appearance of intense peak due to polarons at around 830 nm in electronic absorption spectrum signifies its conducting nature. Characteristics of PMMA-PAni blends with different concentration (by wt) of as-synthesized PAni, prepared via solution casting method, were studied using SEM, UV-Visible spectroscopy and current-voltage (I-V) measurements. Reduction in optical band gap value of PMMA from 3.06 eV to 2.16 eV and about 7 orders of increase in conductivity were observed in PMMA-PAni blend (10% by wt of PAni). Further, investigations of I-V curves suggest the Ohmic conduction in lower voltage region and space-charge limited current (SCLC) as the dominating conduction mechanism at higher voltages (i.e., above 60 V), in both pure PMMA and blended films.

OPTICAL properties of metals; ELECTRIC properties of metals; POLYMETHYLMETHACRYLATE; MIXING; ANILINE; ABSORPTION spectra; OHMIC contacts; ELECTRIC conductivity

International Journal of Nanoscience, 2011, Vol 10, Issue 4/5, p1107

0219-581X

Academic Journal

10.1142/S0219581X11009507