Preparation and Characterization of a Novel Water Soluble Amino Chitosan (Amino-CS) Derivative for Facilitated Transport of CO2

With the goal of obtaining a water soluble polymeric carrier for preparation of fixed facilitated transport membranes, a water soluble amino containing chitosan derivative was prepared through Michael-addition reaction between chitosan and ethyl acrylate followed by amidation of the ester groups with an appropriate diamine. This derivative was characterized using H-1-NMR spectroscopy. Then, facilitated transport membranes were prepared by casting a thin layer of chitosan derivative/poly( vinyl alcohol) blend on a porous polysolfune support; and the effect of fixed carrier's content, feed temperature and feed pressure on the CO2 permeance, and CO2/CH4 selectivity of produced membranes were studied. A facilitated transport mechanism for CO2 through this membrane was concluded.