Citation: WANG Wei, WANG Lihua, QIN Wen. DILUTE SOLUTION BEHAVIOR OF CHITOSAN IN DIFFERENT ACID SOLVENTS*[J]. Chinese Journal of Polymer Science, ;1994, 12(1): 87-90. shu

DILUTE SOLUTION BEHAVIOR OF CHITOSAN IN DIFFERENT ACID SOLVENTS*

Received Date: 6 October 1992

Dilute solution behavior of chitosan was studied in formic acid, acetic acid, lactic acid andhydrochloric acid aqueous solution under different pH values. The reduced viscosities, ηsp/C,ofchitosan solutions were dependent on the properties of acid and pH value of solvents. For a givenchitosan concentration, ηsp/C decreased with the increase of acid concentration, or decreasing pHof solvent, indicating shielding effect of excessive acid similar to adding salt into solution. The stabilities of dilute chitosan solution in formic acid and lactic acid were better than that in acetic acid and hydrochloric acid.
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