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《Acta Polymerica Sinica》 1992-02
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WANG Wei, BO Shuqin, QIN Wen (Changchun Insttute of Afflied Chemistry, Aeademia Sinica, Changchun, Post code: 130022)  
Some dilute solution properties of chitosan with different degree of deacetylat-ion (D.D) have been studied by viscometry and light scattering in the 0.1mol/l CH3COONa/0.2mol/l CH3COOH buffer solvention. The results indicated that the va-luesf or constant k and a in the Mark-Houwink equation were regularly dependent on D.D And it was found that the higher the D.D was, the larger the molecular size S2z2/1, intrinsic viscosity [η] and the expansion factor aη became, under the same molecular weight because of the polycation behavious of chitosan. But the conformation parameter and characterstic ratio C∞ diminished with increasing of D.D
【Fund】: 国家自然科学基金
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