Chitosan is one kind of important nature polymer.There are amino groups (—NH 2) in the chitosan chains.It can be dissolved in acid aqueous solution,which lead to —NH + 3 groups formation,and displays the anionic polyelectrolyte property.The macromolecule chains are stretched caused by electrostatic repulsion of the groups —NH + 3 on the chains.The stretched chains will tend to be coiled with addition of salt because of the charge screening effect of added salt.Since the determination of the int...
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