石油化工高等学校学报Issue(4)：57-61,5.DOI:10.3969/j.issn.1006-396X.2013.04.012
甜菜碱与胜利原油间界面张力的影响因素
Factors Effecting Interfacial Tension between Betaine and Shengli Crude Oil
摘要
Abstract
The interfacial tensions (IFTs) between zwitterionic surfactant ,hexadecyl diethyl-2-hydroxy-1-proply sulfobetaine and Shengli crude oil were investigated using spinning drop method .The influences of salinity ,concentration of divalent ions and weak base NaHCO3 on IFT were discussed .The experimental results show the mixed adsorption of betaine molecules and the active components present in the crude oil at the interface and the synergism of them together determine the IFT of oil-water .The betaine surfactant with electroneutrality permits closer packing at the interface .An increase in the concentration of Na+ and Mg2+ with less ion radii appears to decrease the IFT gradually ,however ,the value of IFT remain at higher level with increase in the concentration of Ca2+ with larger ion radius .NaHCO3 can react with the active components present in the crude oil ,which reduces IFT to ultralow value .In this case ,one can find that total salinity is the key factor that determines the IFT , while ionic type has little effect on the IFT .关键词
甜菜碱/原油/界面张力/钙镁离子Key words
Betaine/Crude oil/Interfacial tension/Calcium and magnesiumion分类
能源科技引用本文复制引用
刘凤静,靳志强,张磊,夏光明,聂永,张路,赵濉..甜菜碱与胜利原油间界面张力的影响因素[J].石油化工高等学校学报,2013,(4):57-61,5.基金项目
国家科技重大专项（2011ZX05011-004）。 （）
