Biopolymer−Clay Nanocomposites Based on Chitosan Intercalated in Montmorillonite

摘要: The objective of this work is the intercalation cationic biopolymer chitosan in Na+−montmorillonite, providing compact and robust three-dimensional nanocomposites with interesting functional properties. CHN chemical analysis, X-ray diffraction, Fourier transform infrared spectroscopy, scanning transmission electron microscopy, energy-dispersion thermal analysis have been employed characterization nanocomposites, confirming adsorption mono- or bilayers chains depending on relative amount respect to exchange capacity clay. first layer adsorbed through a procedure, while second acetate salt form. Because deintercalation very difficult, −NH3+Ac- species belonging act as anionic sites and, way, such become suitable systems for detection anions. These mat...