两相滴定法测定脂肪醇醚硫酸盐阴离子活性物含量研究  

Study on the Determination of Anionic Active Content in Fatty Alcohol Ether Sulfate by Two-phase Titration

作　　者：王健[1] 吴一慧[1] 严章宏 金庭浩 邓虹 王卫平[1] 

机构地区：[1]长江大学石油工程学院,湖北武汉430100

出　　处：《当代化工》2018年第2期282-285,共4页Contemporary Chemical Industry

摘　　要：脂肪醇聚氧乙烯醚硫酸钠(AES)是一类阴-非两性型表面活性剂。以亚甲基蓝作为指示剂,用十六烷基三甲基溴化铵(CTMAB)作为标准溶液测定AES表面活性剂阴离子活性物含量,实验测得值与实际参考样品误差较小。另外还探讨了非离子表面活性剂、聚合物与无机盐对测定结果的影响,实验结果表明无机盐体积的增加使得测定的结果产生了一定的偏差;随着聚合物浓度浓度的增加,测定的结果有偏高的趋势;非离子表面活性剂质量分数的增加对实验结果没有明显的影响。Fatty alcohol polyoxyethylene ether sodium sulphate（AES） is a kind of anionic-nonionic amphoteric surfactant. In this paper, using methylene blue as indicator, cetyltrimethylammonium bromide（CTMAB） as a standard solution, anionic active content in AES surfactant was determined. The difference between the experimental value and the actual reference value was small. In addition, the effect of other compounds（such as nonionic surfactants, polymers and inorganic salts） on the determination result was also discussed. The experimental results showed that the increase of the volume of the inorganic salt made the deviation of the measured result. With the increase of the concentration of the polymer, the measurement result tended to be high. The increase of the nonionic surfactant mass fraction had no obvious effect on the experimental result.

关 键 词：阴-非混合型表面活性剂 亚甲基蓝 两相滴定 定量分析 

分 类 号：TQ423[化学工程]