摘要
考查了羧甲基羟丙基瓜尔胶溶液的流变特性,发现其水溶液呈典型的假塑性,不同浓度下溶液表观粘度随剪切速率的变化可以用Ostwald-Dewaele方程描述;零切粘度与温度的关系符合Andrade方程;溶液的粘度在酸性条件下随溶液pH的减小迅速降低,在碱性条件下则变化不大;溶液对NaCl很敏感,表现出典型的聚电解质的特征。
The rheological characteristics of Carboxylmethylhydroxypropyl guar gum （CMHPG） were studied in terms of the effects of its concentration, added salt and temperature by means of rheometer. It was found that the rheological behavior of CMHPG solutions were types of non-Newtonian shear-thinning fluid, it could be expressed by the Ostwald-Dewaele equation; The obvious behavior of polyelectrolyte solution were observed in CMHPG aqueous solution containing sodium chloride; The zero shear viscosity （η0） could be obtained by using Spencer-Dillon equation, and the temperature dependence of η0 could be expressed by the Andrade equation.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2008年第2期198-200,共3页
Chemical Research and Application
关键词
羧甲基羟丙基瓜尔胶
流变
表观粘度
零切粘度
carboxylmethylhydroxypropyl guar gum
rheologicat
apparent viscosity
zero shear viscosity
