阴离子双子表面活性剂的油水界面张力

Oil-water interfacial tension of anionic Gemini surfactant

胡小冬 2 熊玉娟² 刘霜³ 曹洁²

中国石油新疆油田公司勘探开发研究院，新疆 克拉玛依 834000 长江大学石油工程学院，湖北 荆州 434023 中国石化江汉油田分公司勘探开发研究院，湖北 潜江 433124

Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay 834000, China School of Petroleum Engineering, Yangtze University, Jingzhou 434023, China Research Institute of Exploration and Development, Jianghan Oilfield Company, SINOPEC, Qianjiang 433124, China

测定了阴离子双子表面活性剂8-4-8和12-4-12与不同油相间的界面张力，考察了不同油相和矿化度变化对油水界面张力的影响。结果表明，阴离子双子表面活性剂与不同油相的油水界面张力达到平衡的时间都比较短，界面张力稳定性较好；8-4-8在煤油的油水界面活性最好，而12-4-12在稀油的油水界面活性比混合油的好。矿化度增加（0~180 g/L）能有效降低阴离子双子表面活性剂的油水界面张力，说明阴离子双子表面活性剂8-4-8和12-4-12具有较好的耐盐性。

The interfacial tension between the anionic Gemini surfactants such as 8-4-8, 12-4-12 and the different oils is measured and the effect of different oil phase, temperature and salinity on the oil-water interfacial tension is investigated in this paper. The results show that the time to reach the interfacial tension equilibrium for anionic Gemini surfactant with different oil phase is short and the dynamic interfacial tension is stable. The interfacial activity between the surfactant 8-4-8 and the kerosene is the best one in the three oil phases and the interfacial activity between the surfactant 12-4-12 and the thin oil is better than that of the mix oil. The salinity increases (0 to 180 g/L) can effectively reduce the interfacial tension between the anion Gemini surfactant and the thin oil. The anionic Gemini surfactants 8-4-8 and 12-4-12 all have good resistances to salt.

10.6056/dkyqt201201032