WANG Wei, XU De-shi. RHEOLOGICAL PROPERTIES FOR CONCENTRATED SOLUTION OF CHITOSAN ZERO SHEAR VISCOSITIES[J]. Acta Polymerica Sinica, 1995,(3):291-295.DOI:
Flow properties for concentrated solution of chitosan were described in 50%HCOOH
50%CH3COOH
0.2mol/l HCl and 0.1mol/l CH3COOH+0.1mol/l CH3COONa under the concentration from 2 to 5g/100ml solvent. Flow equations presented in literature
such as Ferry equation
Cross equation and Ballauff equation
were tested from the point of view of the extrapolating method for evaluating the zero shear viscosities.The results of extrapolation were compared with the values measured by falling-ball method. It was shown that the method based on Cross eq-uation gave relatively good results.