脂肪醇聚氧乙烯醚丙基磺酸盐的合成与性能研究

Synthesis and performance of alkyl alcohol polyoxyethylene propyl ether sulfonate

以脂肪醇聚氧乙烯醚(AEO-5)和3-氯-2-羟基丙磺酸钠为主要反应原料,合成了脂肪醇聚氧乙烯醚丙基磺酸钠(AESO-5)。考察了反应温度、反应时间、原料摩尔比对产率的影响,并对其理化性能进行了测试。结果表明:在3-氯-2-羟基丙磺酸钠与醇醚钠摩尔比为1∶1.5,反应温度为84℃,反应时间为6 h的条件下,目的产物收率最高为62.97%。产物的表面张力和临界胶束浓度分别为31.06 m N/m和2.2×10-4mol/L。产物与十二烷基苯磺酸钠(SDBS)、脂肪醇聚氧乙烯醚硫酸钠(AES)相比,耐温抗盐性较好。

The alkyl alcohol polyoxyethylene propyl ether sulfonate（ AESO-5） is synthesized through two steps using fatty ethoxylate（ AEO-5） and sodium 3-chloro-2-hydroxy propanesulfate made by our own laboratory as the main raw materials. The effects of reaction temperature,reaction time and molar ratio of raw materials on the yield of AESO-5are studied. The structure of AESO-5 is determined by FT-IR. The surface（ interfacial） tension and the capacity of emulsifying,temperature resistance,salt tolerance are also tested. The optimum synthesis conditions of AESO-5 are obtained as follows： 84℃ of reaction temperature,6 hours of reaction time and 1. 5 molar ratio of sodium 3-chloro-2-hydroxy propanesulfate to AEO-5. Under the optimum reaction conditions,the yield of AESO-5 can reach up to 62. 97%.The surface tension and the critical micelle concentration of AESO-5 are 31. 06 m N·m^- 1and 2. 2 × 10^- 4mol·L^- 1,respectively. Compared with sodium dodecyl benzene sulfonate（ SDBS） and sodium alcohol ether sulphate（ AES）,the product AESO-5 has better temperature resistance and salt tolerance properties,which can be used to enhance oil recovery in a high temperature and high salinity reservoir.