物理化学学报 >> 2003, Vol. 19 >> Issue (11): 1081-1084.doi: 10.3866/PKU.WHXB20031120

研究简报 上一篇    下一篇

两性瓜尔胶衍生物溶液的流变特征

周建芳;张黎明;Perter S. Hui   

  1. 中山大学高分子研究所，广州　510275；美国ECONOMY化学公司中国代理处，广州　510030
  • 收稿日期:2003-04-25 修回日期:2003-07-04 发布日期:2003-11-15
  • 通讯作者: 张黎明 E-mail:ceszhlm@zsu.edu.cn

Rheological Characteristics of Aqueous Solutions of an Amphoteric Guar Gum Derivative

Zhou Jian-Fang;Zhang Li-Ming;Peter S. Hui   

  1. Institute of Polymer Science, Zhongshan University, Guangzhou　510275; China Agency Office of Economy Polymers ＆ Chemicals Company of USA, Guangzhou　510030
  • Received:2003-04-25 Revised:2003-07-04 Published:2003-11-15
  • Contact: Zhang Li-Ming E-mail:ceszhlm@zsu.edu.cn

PDF

2771

赞

摘要： 借助旋转粘度计研究了一种两性瓜尔胶衍生物(E-AMPHO-S)溶液的流变特征，考察了衍生物浓度、外加盐和温度对E-AMPHO-S溶液流变性能的影响.发现在实验条件下， E-AMPHO-S溶液呈非牛顿流体特征，具有剪切变稀特性；随改性瓜尔胶浓度增大， E-AMPHO-S溶液具有增强的触变性质；在一定浓度盐溶液中， E-AMPHO-S可表现出明显的反聚电解质溶液粘性行为；E-AMPHO-S溶液的零切粘度可由Spencer-Dillon方程外推得出，其与温度的依赖关系服从Arrhenius公式.

关键词: 瓜尔胶衍生物, 流变性能, 假塑性流体, 触变性, 反聚电解质溶液行为, 零切粘度

Abstract: The rheological characteristics of aqueous solutions of an amphoteric guar gum derivative, namely E-AMPHO-S, were studied in terms of the effects of its concentration, added salts and temperature by means of a rotating rheometer. It was found that E-AMPHO-S solutions investigated behaved as non-Newtonian shear-thinning fluids. With the increase of E-AMPHO-S concentration from 0.1％ to 2.0％(g•mL－1), the consistency coefficient increased while the viscosity behavior index decreased. The thixotropic response became stronger when E-AMPHO-S concentration was increased from 1.0％ to 3.0％(g•mL－1). The obvious viscosity behavior of “anti-polyelectrolye solution” was observed in aqueous salt solutions containing calcium chloride. The zero shear viscosity (η0) could be obtained by using Spencer-Dillon equation, and the temperature dependence of η0 could be expressed by a relation of the form of the Arrhenius equation.

Key words: Guar gum derivative, Rheological property, Pseudoplastic fluid, 　Thixotropy, Anti-polyelectrolyte solution behavior, Zero shear viscosity