| 海藻酸钠溶液的粘度性质与流变学特征 |
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| 引用本文： | 郑洪河,张虎成.海藻酸钠溶液的粘度性质与流变学特征[J].河南师范大学学报(自然科学版),1997,25(2):51-55. |
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| 作者姓名： | 郑洪河 张虎成 |
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| 作者单位： | 河南师范大学化学系 |
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| 摘 要： | 本文考察了海藻酸钠溶液的粘度行为和亚浓溶液的流变特性，得到体系粘度与海藻酸盐浓度的幂次关系，幂指数为２．９；探讨了在不同外加盐浓度条件下体系的特性粘度，Ｈｕｇｇｉｎｓ与Ｋｒａｅｍｅｒ常数的变化情况；亚浓溶液的剪切行为表明，在体系的表观粘度ηａ与剪切速率的幂次公式ηａ∝ｂ中，ｂ值不仅取决于海藻酸盐的浓度，也是剪切速率的函数
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| 关 键 词： | 海藻酸钠 粘度 流变性 |
Studies on Viscous and Rheological Properties of Alginate Solution |
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| Zheng Honghe Zhang Hucheng Xia Zhiqing Zhang Qingzhi.Studies on Viscous and Rheological Properties of Alginate Solution[J].Journal of Henan Normal University(Natural Science),1997,25(2):51-55. |
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| Authors: | Zheng Honghe Zhang Hucheng Xia Zhiqing Zhang Qingzhi |
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| Abstract: | Sereral viscous and rheological properties of aqueous alginate solution have been experimentally investigated. A powerlaw relation is found between the viscosity and alginate concentration with the exponent of 2.90. The dependence of intrinsic viscosity () Huggins constant (k′) and Kraemer constant (k″) as a function of the added salt concentration (c s) is discussed. Shearthining behariour of 5g/100ml alginate solution reveals that the value of the exponent b in the power-Law relation η∝· b to be in the range of -0.1～-0.41,Which is dependent not only on alginate concentration but also on the shear rate. |
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| Keywords: | sodium alginate viscosity rheological property |
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