J4 ›› 2010, Vol. 45 ›› Issue (3): 15-18.

• Articles • Previous Articles     Next Articles

Rheological properties of Blettila striata polysaccharide solutions

 ZHANG Jie, ZHANG Wei-Ming, SHI Jin-Song, SUN Da-Feng, ZHU Chang-Ling   

  1. Nanjing Institute for Comprehensive Utilization of Wild Plant,Nanjing 210042,Jiangsu, China
  • Received:2009-09-22 Online:2010-03-16 Published:2010-04-02

Abstract:

The effect of polysaccharide concentration, electrolyte concentration, pH value and temperature (T) on the rheological behaviors of Blettila striata polysaccharide solutions was studied. The solutions of polysaccharide concentration between 2 and 16 g·L-1 were pseudoplastic fluids. The apparent viscosity (η) of solutions decreased with increasing shear rate  (γ)in the range of γ<1s-1; while η became constant  (ηs)  for γ>1s-1. ηs rose with polysaccharide concentration, while salt concentration and pH had nothing to do with ηs. ηof solution at 16 g·L-1 lowered with rising T. The relationship between η and T conformed to the Arrhenius equation.

Key words: Blettila striata;polysaccharide;rheology;viscous

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