Chitosan-Coated Alumina Nanoparticles for Fabrication of a FunctionalComposite Membrane for CO۲ Separation

Nanocomposites consisting of polymer matrixes and inorganic fillers are excellent materials for making functionaland stable CO۲ separation membranes. However, the agglomeration of nanoparticles and their weak interaction withthe polymer matrix can undermine the gas separation performance of the nanocomposite. With this in mind, in thepresent study, we aim to coat chitosan on alumina nanoparticles to improve their dispersion in the polymer matrix.For this purpose, an epoxy silane component was used to attach chitosan chains on alumina nanoparticles andnanoparticles were coated through four different approaches. Infrared spectroscopy results confirmed that thesecond and third approaches, in which chitosan and epoxy silane were first dispersed in the solvent and thennanoparticles were added to the dispersion, led to the best association of chitosan on the surface of nanoparticles.

کلیدواژه ها:

Polymer nanocomposite ، Polymer characterization ، Gas separation membrane ، Chitosan