Preparation and Characterization of Mustard Stalks Derived Carboxymethyl Cellulose and Poly(L-Lactic Acid) Biocomposites

The influences of poly ( L- lactic acid) (PLLA) and carboxymethyl cellulose (CMC) derived from mustard stalks content on the morphological and thermal properties of PLLA/CMC biocomposites were investigated. The yield of CMC from microcrystalline cellulose (MCC) of mustard stalks was about 78%. Biocomposites were prepared using the solution casting method, varying PLLA, and CMC ratio. Prepared samples were characterized using Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetric, X-ray diffraction, and scanning electron microscopy. The decomposition temperature of CMC was increased and formed excellent biocomposites with PLLA. Composite crystallinity was varied with the percentages of the CMC. The CMC fibers coated with a layer of PLLA suggested that CMC and PLLA have good compatibility.