Preparation and Characterization of Carboxymethyl Cellulose Film From Sunflower Stalk
In this study, cellulose obtained from sunflower stalks was converted to carboxymethyl cellulose (CMC) by carboxymethylation reaction using sodium monochloroacetate (NaMCA) in order to obtain CMC films. Films were prepared by casting method. To investigate chemical structure of synthesized CMC and CMC films, Fourier transform infrared spectroscopy (FTIR) was performed. Film solutions were prepared by adding gycerol, polyethylene glycol (PEG) and canola oil separately as plasticizers. Thermogravimetric analysis (TGA) was performed and the degradation temperature of CMCf1, CMCf2 and CMCf3 were found. Degree of substitution (DS) which is an important indicator of water solubility for CMC was calculated as 0.51.
Keywords- cellulose; carboxymethyl cellulose; film; plasticizer.