Antibacterial activity of chitosan/PAN blend prepared at different ratios

Abstract

Chitosan and Chitosan: PAN blend with different PAN weight ratios (1, 2, 3, 4 and 5%) were prepared by solution casting method. The structural and mechanical properties for prepared samples were done by X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR) and strain stress test. The XRD measurements indicate the formation of the blend by the variation of inter-planer distances. Also, the shift in some FTIR bands energy for polysaccharides and reduce their intensities indicate the formation of Chitosan:PAN blend. The largest tensile appeared at 1% PAN ratio. The chitosan/PAN blends were examined their antibacterial activity using the inhibition concentration method. The results show different grades of activity at the different samples. The highest inhibition of the bacteria for Chitosan/PAN blend at a 1% blend ratio. The blend has less effectiveness against gram-positive bacteria than gram-negative.