Characterization of surface properties of chitosan/bentonite composites beads by inverse gas chromatography

Chitosan/bentonite (CSBt) composites beads were prepared by dropwise of a solution containing chitosan and bentonite to an alkaline NaOH solution. Fourier Transform Infrared Spectroscopy, X-ray diffraction analysis, photoelectron spectroscopy, XPS Brunauer-Emmett-Teller BET analysis have been used provide new insights on the composition morphology CSBt surface. In this study, inverse gas chromatography (IGC) was implemented characterize physico-chemical properties IGC at infinite dilution (IGC-ID) understand effect CS dispersive component surface energy bentonite. The increasing amount leads significantly decrease Bt ?sd emphasizing coating with CS. finite concentration (IGC-FC) also allowing us reach several parameters such as: specific area organic probes distribution functions adsorption sites solid case, most significant decreases observed in obtained octane isopropanol probes. function revealed number high increase CS/Bt mass ratio.