表面活性剂/聚合物二元复合体系超低界面张力的影响因素研究

为了研究二元复合体系超低界面张力的影响因素,通过物理实验方法分别测得不同条件下界面张力的变化规律。结果表明,石油磺酸盐阴离子表面活性剂在一定的浓度范围内可以达到超低界面张力;加入聚合物的表面活性剂所形成的二元复合体系可以有效地延长表面活性剂到达平衡界面张力值所需的时间;分子吸附理论可以解释同浓度表面活性剂的界面张力先降低到最低再升高的原因,同时也可以解释高浓度表面活性剂能够在较短时间内达到超低界面张力值的原因。

Study on Influencing Factors of the Ultra-low Interfacial Tension of Polymer-surfactant Binary Composite System

In order to study influence factors of the ultra-low interfacial tension of polymer- surfactant (PS) binary composite system, the change law of interfacial tension under different conditions was measured by physical experiment method. The results show that, the ultra-low interfacial tension can be reduced in a certain concentration range of petroleum sulfonate anionic surfactant; Adding polymer to surfactant can effectively prolong the time required to reach the equilibrium interfacial tension value; Molecular adsorption theory can explain the reason that interfacial tension of the same concentration of surfactant reduces to the minimum level and then increases, it can also explain that high concentration of surfactant can reach the ultra-low interfacial tension in the shortest time.