chitosan nanoparticle - montmorillonite - titanium dioxide nanocomposites: synthesis, characterization, and antimicrobial activity

In recent years, a strong interest has emerged in hybrid composites and their potential uses, especially in chitosan nanoparticle – montmorillonite - titanium dioxide - (csnp – mmt - tio2) composites, which have interesting technological properties and applications. using the precipitation method, chitosan nanoparticles with tio2 nanocomposite (csnp – mmt - tio2 nanocomposite) was created. analysis using scanning electron microscopy (sem) revealed that the modified tio2 nanocomposite was successfully dispersed into the chitosan matrix and that the roughness of the chitosan nanoparticle - mmt- tio2 nanocomposites were significantly reduced. moreover, x-ray diffraction (xrd) and fourier transform infrared (ft-ir) spectroscopy analyses indicated that the chitosan interacted with tio2 nanocomposite and possessed good compatibility, while a thermogravimetric analysis (tga) of the thermal properties showed that the chitosan-mmt-tio2 nanocomposites with 0.05% tio2 nanocomposite concentration had the best thermal stability. the chitosan- mmt-tio2 nanocomposite exhibited an inhibitory effect on the growth of gram-positive and gram-negative microorganisms.