Abstract

PREPARATION AND CHARACTERIZATION OF CHITOSANPOVIDONE BLEND WITH GLUTARALDEHYDE AS CROSSLINKING AGENT

S. Aisverya, K. Sangeetha, J. Venkatesan, T. Gomathi and P. N. Sudha*

Abstract

Biocompatible Chitosan-Povidone/Poly (vinylpyrrolidone) (PVP) blends were successfully prepared by Solution Casting method. The prepared blends were characterized by using techniques such as Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction studies (XRD), Thermal studies (DSC and TGA), and SEM. FTIR was used to characterize the presence of specific chemical groups in the blends prepared. The Crystallite size and Lattice strain was calculated using Scherrer equation. The addition of PVP was beneficial for the thermal stability of chitosan, but resulted in a compatibility lower strength performance. Thermogravimetric analysis indicated that the thermal stability of the blend was increased with addition of glutaraldehyde as a crosslinking agent. DSC and XRD were used to find the thermal stability, miscibility and crystallinity of the blends. Overall, the performed studies confirmed CS–PVP blends can be a potential candidate for biomedical applications and for water treatment applications.

Keywords: Chitosan, Crystallinity, Blend, Crystallite size, Povidone, Compatibility.