APPARENT YIELD STRESS IN XANTHAN GUM SOLUTIONS AT LOW CONCENTRATIONS

被引：27
|
作者：
GARCIAOCHOA, F
CASAS, JA
机构：
[1] Departamento de Ingeniería Química, Facultad C.C. Químicas, Universidad Complutense, Madrid
来源：
CHEMICAL ENGINEERING JOURNAL AND THE BIOCHEMICAL ENGINEERING JOURNAL | 1994年 / 53卷 / 03期
关键词：
D O I：
10.1016/0923-0467(93)06043-P
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The apparent yield stress in xanthan gum solutions at xanthan concentrations between 1 and 2 kg m-3 has been determined by an indirect method. Influences of measurement and dissolution temperatures are taken into account. Experimental measurements obtained with a Brookfield viscometer are fitted to a Casson model. Apparent yield stress changes with dissolution and measurement temperatures. These changes are due to a variety of reasons, such as conformational changes of the molecules in solution and weakening of different intermolecular bonds.
引用
收藏
页码：B41 / B46
页数：6
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