The sudies on the permeability property of chitosan membranes

Chitosan, a linear polysaccharide, is obtained by chitin N deacetylation. Its β(1 4) glucosidic bond is not stable and breaks easily in acid condition. In this study, chitosan of different molecular weights(MW) was prepared by acetic acid degradation. Chitosan was dissolved at 3%(w/v) concentration in 1%(v/v) acetic acid and the solution was dried at 50 degree C. We get chitosan membranes of different MW after neutralization with aqueous NaOH....