高浓度iota卡拉胶溶液的流变性能研究

Rheological properties of iota carrageenan solution with high concentration

摘要: 本文研究了高浓度iota卡拉胶溶液的流变特性以及浓度、温度、转速和甘油等的影响。在实验条件范围内,结果显示:iota卡拉胶溶液粘度随浓度的增大而增加;粘度随温度的增大而减小;4%和60℃下3.5%的iota卡拉胶溶液具有剪切变稀现象,流变性能呈现假塑性,属于非牛顿流体,低于3.5%的iota卡拉胶溶液呈现牛顿流体特点;非牛顿态iota卡拉胶溶液具有复合触变性;甘油含量可以改变卡拉胶溶液的粘度。

Abstract: The effects of concentration, temperature, convolution and glycerol concentration were investigated, respectively.The results showed that the viscosity of iota carrageenan increased with increase of concentration, while decreased with increase of temperature 3.5% under 60℃ and 4% solutions presented the characteristics of shear shinning of non- Newtionian fluid and pseudoplasticity of aqueous slurries. The solutions presented Newtionianfluid when the concentration was lower than 3.5%.The Non-Newtionianfluid of solution showed complex thixotropy.Glycerol could influence the viscosity of mixed solutions.