烷基甘油醚硫酸酯盐的合成

Synthesis of alkyl glycerol ether sulfate

以甘油为原料制备了二辛基甘油醚硫酸盐阴离子表面活性剂,分别以IR和MS对中间产物二辛基甘油醚进行了结构表征。考察了物料摩尔比、反应温度、反应时间等因素对中间产物二辛基甘油醚收率的影响,得出了制备二辛基甘油醚的适宜工艺条件:辛醇钠与二氯丙醇摩尔比为2.2∶1,反应温度为70℃,反应时间为8h。经GC内标法分析,上述条件下二辛基甘油醚的收率大于92%。以氯磺酸为硫酸化试剂,制得了二辛基甘油醚硫酸钠,并对其表面活性进行了测定,结果显示,该新型表面活性剂具有较好的降低表面张力的能力和较低的临界胶束浓度。

The dioctyl glycerol ether sulfate anionic surfactant was synthesized from glycerol.The intermediate dioctyl glycerol ether was confirmed by IR and MS.Various influencing factors for synthesis of dioctyl glycerol ether synthesizing,such as molar ratio,reaction temperature and reaction time were studied.The optimal reaction condition was obtained by the ratio of sodium octoxide and dichloropropanol is 2.2∶1,reaction temperature is 70 with reaction time of 8 ℃ h.Under this condition,the yield of dioctyl glycerol ether exceeds 92% as measured by GC.Dioctyl glycerol ether sulfate was prepared by chlorosulfonic acid and its surface activity was measured.The results showed that it has good capacity for surface tension reducing and low critical micelle concentration.