Core-shell structured anionic nano microemulsion system, and preparation and application thereof
申请人:PetroChina Company Limited
公开号:US11174424B2
公开(公告)日:2021-11-16
The invention discloses a core-shell structured anionic nano microemulsion system, and preparation and application thereof. The system comprises an anionic Gemini surfactant, an oil phase material, a solubilizer and water; wherein the microemulsion has a core-shell structure, with the outer shell being an anionic Gemini surfactant, and the inner core being an oil phase material. The anionic Gemini surfactant is N,N,N′,N′-dodecyl tetrasubstituted diphenyl ether sulfonate having the structural formula:
The anionic nano-microemulsion system of the present invention is homogeneous and transparent, has a spherical core-shell structure, has a nanometer size (3 to 40 nm) as droplets, has a narrow particle size distribution, is not easy to agglomerate, has good stability, and has an ultra-low interfacial tension and a capability of reducing viscosity of crude oil.
本发明公开了一种核壳结构阴离子纳米微乳液体系及其制备和应用。该体系包括阴离子双子座表面活性剂、油相材料、增溶剂和水;其中微乳液具有核壳结构,外壳为阴离子双子座表面活性剂,内核为油相材料。阴离子 Gemini 表面活性剂为 N,N,N′,N′-十二烷基四取代二苯醚磺酸盐,其结构式为
本发明的阴离子纳米微乳液体系均匀透明,具有球形核壳结构,液滴大小为纳米级(3 至 40 纳米),粒度分布窄,不易团聚,稳定性好,具有超低的界面张力和降低原油粘度的能力。