高价金属离子对疏水缔合聚合物溶液黏度稳定性影响机理研究

Study on the Mechanism of Effect of High Valence Metal Ion on the Viscosity Stability of Associating Polymer Solution

研究了高价金属离子对疏水缔合聚合物溶液的影响,研究表明,在钙、镁离子的作用下,聚合物溶液的黏度剪切稳定性变化较大。利用荧光分光光度计和广角激光光散射仪,考察了钙、镁高价金属离子对疏水缔合聚合物溶液微观结构的影响及机理分析。试验结果表明,钙、镁高价金属离子的物理化学作用是影响疏水缔合聚合物溶液黏度稳定性的关键因素;相同条件下,镁离子的影响大于相同质量浓度钙离子的影响。

The effect of high valence metal ions on the associating polymer solution was studied.Research showed under the action Ca2+and Mg2+,the shear stability of viscosity of the polymer solution varied greatly,fluorescence spectroscopy and dynamic light scattering method were also used to study the effect of Ca2+and Mg2+on the microstructure in associating polymer solution.The experiment results indicate that the physical and chemical action of Ca2+and Mg2+on polymer are key factors affected the stability of the viscosity of the associative polymer.Meanwhile,the impact of magnesium ions is larger than the calcium ions under the same concentration.