聚合物/表面活性剂二元体系对油水界面性质的影响

Effect of Binary Systems of Polymer/Surfactant on Oil-water Interfacial Properties

文章应用界面张力仪、Zeta电位仪和表面黏弹性仪测定了聚合物、表面活性剂及其二元复合体系的质量浓度对油水界面性质的影响,并应用透射电镜观察了采出液的液膜结构。结果表明,随着聚合物质量浓度的增加,油水界面的界面剪切黏度值和界面张力值增大,颗粒表面Zeta电位的绝对值增大;随着表面活性剂质量浓度的增加,油水界面的界面剪切黏度变化幅度很小,但界面张力显著减小,颗粒表面Zeta电位绝对值增大;聚合物与表面活性剂复合能够形成稳定的聚合体,具有较大的界面剪切黏度值,较小的界面张力和较高的Zeta电位值;体系中聚合物、表面活性剂及水中悬浮物形成了类似"晶体"结构。

Effect of the concentration of polymer/surfaetant binary system on oil-water interfacial properties was investigated by using interfacial tensiometer, Zeta potentiometer and surface viscoelastic instrument. Membrane structure of the produced liquid was observed by transmission electron microscope （TEM）. Results indicated that the shear viscosity and interracial tension of oil-water interface and Zeta potential absolute value of particle surface were increased with increasing the concentration of polymer, the interfacial tension of oil-water interface and Zeta potential absolute value of particle surface were decreased and increased respectively with increasing concentration of surfactant, but oil-water interface shear Viscosity was changed mildly. In the binary system, polymer, surfaetant and suspended substance in water form a similar crystal structure.