Abstract

SYNTHESIS AND CHARACTERIZATION OF CHITOSAN (CS)/ CELLULOSE ACETATE (CA) /POLYVINYL ALCOHOL (PVA) TERNARY BLEND

R. Bharathi Priyadharsini and K. Vijayalakshmi*

Abstract

In this study, a novel chitosan(CS)/celloluse acetate(CA)/polyvinyl alcohol(PVA) ternary biopolymeric blend in 1:1:2 ratio were synthesized and characterized by the universal tester like the Fourier transform infra red spectroscopy (FT-IR), X-Ray diffractogram (XRD), Thermo gravimetric analysis (TGA), Differential scanning calorimetry (DSC) and Scanning electron microscopic (SEM) studies. Appearance of certain strong peaks due to the presence of various functional groups (-OH, NH2, COO- in ester) was evident from FT-IR results. These observed results clearly suggest that the chitosan biopolymer gets blended effectively with polyvinyl aclcohol and cellulose acetate. X-ray diffraction and SEM studies clearly indicate that the prepared chitosan (CS)/ celloluse acetate(CA)/polyvinyl alcohol (PVA) ternary biopolymeric blend possesses highly amorphous nature and rough surface morphology suitable for adsorption process. Also the TGA and DSC studies showed that the prepared chitosan/polyvinyl alcohol/cellulose acetate ternary biopolymeric blend has highly thermally stable behavior. The results were investigated.

Keywords: chitosan, polyvinyl alcohol, cellulose acetate, characterization, ternary ble