“…Polymer-polymer miscibility is a very significant factor especially for mechanical property of the blend. This miscibility is generally considered as a result of specific interaction between the polymer segments [5][6][7][8][9][10][11][12][13][14]. Blends of chitosan with several polymers have attracted much scientific interest, for example CS/polyacrylic acid membranes blends were prepared for water-ethanol separation, it was found that all these membranes are highly waterselective [15].…”