VISCOSITY BEHAVIOR OF LACQUER POLYSACCHARIDE IN AQUEOUS SOLUTION

QIU Xingping; DU Yumin; ZHANG Lina; QIAN Baogong

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VISCOSITY BEHAVIOR OF LACQUER POLYSACCHARIDE IN AQUEOUS SOLUTION

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- VISCOSITY BEHAVIOR OF LACQUER POLYSACCHARIDE IN AQUEOUS SOLUTION
- Vol. 9, Issue 1, Pages: 94-100(1991)
- Affiliations：
  
  1. Department of Chemistry, Wuhan University,Wuhan,430072
  2. Wuhan University
  3. Wuhan University Wuhan 430072
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：20 March 1991
- Accepted：
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[1]邱星屏,张俐娜,杜予民,钱保功.VISCOSITY BEHAVIOR OF LACQUER POLYSACCHARIDE IN AQUEOUS SOLUTION[J].Chinese Journal of Polymer Science,1991,{4}(01):94-100.

QIU Xingping, DU Yumin, ZHANG Lina, et al. VISCOSITY BEHAVIOR OF LACQUER POLYSACCHARIDE IN AQUEOUS SOLUTION[J]. 1991, 9(1): 94-100.
[1]邱星屏,张俐娜,杜予民,钱保功.VISCOSITY BEHAVIOR OF LACQUER POLYSACCHARIDE IN AQUEOUS SOLUTION[J].Chinese Journal of Polymer Science,1991,{4}(01):94-100. DOI：

QIU Xingping, DU Yumin, ZHANG Lina, et al. VISCOSITY BEHAVIOR OF LACQUER POLYSACCHARIDE IN AQUEOUS SOLUTION[J]. 1991, 9(1): 94-100. DOI：

摘要

正

The dependence of measured viscosity on NaCl concentration （0.1 to 3.0M）

pH （range of 2—13） and cadoxen composition w

cad

（from 2% to 100%） for the lacquer polysaccharide in NaCl/cadoxen/H

O mixture containing HCl or without were obtained. All the viscosity exponents γin the Mark-Houwink equations under three different solvent condition arc close to 0.5. The w

cad

dependence of reduced viscosity ηsp/c confirms the single strand chain of the polysaccharide. As the γvalues close to 0.5 and values of unperturbed dimension

/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.

Abstract

The dependence of measured viscosity on NaCl concentration （0.1 to 3.0M）

pH （range of 2—13） and cadoxen composition w

cad

（from 2% to 100%） for the lacquer polysaccharide in NaCl/cadoxen/H

O 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 w

cad

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

/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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