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实验室条件下,以长链羧酸(月桂酸)、聚乙二醇等为主要原料,通过赫尔-乌尔哈-泽林斯基反应等和酯化反应,用醚键加入方式加入联接基团,用浓硫酸加成反应加入硫酸酯键,从而在实验室条件下合成具有特殊结构的双子表面活性剂—GA12-S-12。通过用旋转液滴法测合成的硫酸酯盐阴离子双子表面活性剂的表面张力,测得其临界胶束浓度(CMC)为438 mg/L,临界胶束浓度下表面张力为30.9 mN/m,并对比十二烷基硫酸钠水溶液表面张力,显示GA12-S-12[低聚二醇(α-硫酸酯钠)月桂酸双酯阴离子双子表面活性剂]具有更优的表面活性。进一步配制不同浓度的GA12-S-12表面活性剂溶液,测定它们与长庆五里湾原油的界面张力,效果显示其适用于五里湾区原油采收率的提高。
Under laboratory conditions, long chain carboxylic acid (lauric acid), polyethylene glycol as the main raw material, through the Hull - Urha - Zeliski reaction and esterification reaction, the addition of ether linkage join Group, the sulfate ester bond was added by concentrated sulfuric acid addition reaction to synthesize the gemini surfactant -GA12-S-12 with special structure under the laboratory conditions. The critical micelle concentration (CMC) was 438 mg / L and the surface tension was 30.9 mN / m when the critical micelle concentration was measured by measuring the surface tension of the synthesized sulfate anion gemini surfactant by the spin drop method. Compared with the surface tension of sodium dodecyl sulfate aqueous solution, GA12-S-12 [oligo glycol (α-sodium sulfate) laurate diacetate anionic gemini surfactant] showed better surface activity. Further preparation of different concentrations of GA12-S-12 surfactant solution, measured with Changqing Wuliwan crude oil interfacial tension, the results show that it is suitable for Wuliwan District oil recovery.