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.
VISCOSITY BEHAVIOR OF LACQUER POLYSACCHARIDE IN AQUEOUS SOLUTION
摘要:
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.
English
VISCOSITY BEHAVIOR OF LACQUER POLYSACCHARIDE IN AQUEOUS SOLUTION
Abstract:
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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