Citation: QIU Xingping, DU Yumin, ZHANG Lina, QIAN Baogong. VISCOSITY BEHAVIOR OF LACQUER POLYSACCHARIDE IN AQUEOUS SOLUTION[J]. Chinese Journal of Polymer Science, ;1991, 9(1): 94-100. shu

VISCOSITY BEHAVIOR OF LACQUER POLYSACCHARIDE IN AQUEOUS SOLUTION

Received Date: 6 March 1990

The dependence of measured viscosity on NaCl concentration (0.1 to 3.0M), pH (range of 2—13) and cadoxen composition wcad (from 2% to 100%) for the lacquer polysaccharide in NaCl/cadoxen/H2O mixture containing HCl or without were obtained. All the viscosity exponents γ in the Mark-Houwink equations under three different solvent condition arc close to 0.5. The wcad dependence of reduced viscosity ηsp/c confirms the single strand chain of the polysaccharide. As the γ values close to 0.5 and values of unperturbed dimension S2>θ/M and [η] much smaller than those for usual linear polymers,these facts suggest that the polysaccharide chains in the aqueous solutions should be dense random coil owing to the highly branched structure.
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