餐厨废油制备的生物基两性表面活性剂的油水界面性能  

Bio-based Zwitterionic Surfactants Derived from Waste Cooking Oil and Their Interfacial Performance

作　　者：蔡帮鑫 张琪琪[1] 刚洪泽[1] 刘金峰[1] 杨世忠[1] 牟伯中[1,2] 

机构地区：[1]华东理工大学应用化学研究所 [2]上海生物制造技术协同创新中心,上海200237

出　　处：《应用化学》2016年第7期798-803,共6页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(21203063);国家高技术研究发展计划(2013AA064403)~~

摘　　要：以餐厨废油制备了生物基两性表面活性剂,应用界面张力和动态光散射方法,研究了该生物基两性表面活性剂体系的油水界面性能及在溶液中的聚集行为。在无外加碱条件下,由餐厨废油制备的表面活性剂表现出良好的界面性能,在50~70℃以及p H值为7~12的条件下,均可以将油水界面张力降至超低值（〈10-3m N/m）,在不同的油藏模拟地层水中均保持较好的界面活性;分别在50、-20和4℃下保存,其界面活性均未受到明显影响。在水溶液中形成的聚集体的平均流体力学半径为10~30 nm,无机盐离子的加入可使聚集体的粒径上升。基于其优良的界面性质和可再生来源,由餐厨废油制备的生物基两性表面活性剂在三次采油方面具有重要的应用价值。Bio-based surfactants are the one using renewable biomass as the main starting material. Bio-based surfactants,different from petroleum-based surfactants,have attracted more attentions from scientific and industrial fields due to the renewable resource and outstanding surface / interfacial properties. Interfacial tension and dynamic light scattering measurement were utilized to evaluate the interfacial properties and aggregation behavior of bio-based zwitterionic surfactants derived from waste cooking oils in aqueous solution.The bio-based surfactants show excellent interfacial properties in the absence of alkali and remain ultra-low oilwater interfacial tensions at temperatures 50 ~ 70 ℃ and pH 7 to 12; the bio-based surfactants solution exhibits good interfacial properties in different simulated oil-water samples; the interfacial properties are not effected by the storage temperature of 50 ℃,- 20 ℃ and 4 ℃; the hydrodynamic diameters of the aggregates in different water samples are in the range of 10 to 30 nm and inorganic salt ions have little effect on the size of the aggregates. The bio-based surfactants derived from waste cooking oils are potentital substitutes to petroleum-based surfactants for many applications,especially in enhanced oil recovery.

关 键 词：餐厨废油 生物基表面活性剂 两性表面活性剂 无碱体系 超低界面张力 聚集行为 

分 类 号：O647[理学—物理化学]