季铵盐型阳离子表面活性剂是一种用途广泛的化工产品,本研究以自制季铵盐型活性醚化剂环氧氯丙基三甲基氯化铵(GTMAC)改性十八酸合成阳离子单酯2-羟基-N,N,N-三甲基-3-硬脂酰氧基丙基氯化铵(CMESA).实验得出CMESA的最佳合成条件为:超声频率40kHz,n(GTMAC):n(十八酸)=1.5:1.0,反应时间2.5h,pH=6,反应温度40℃,CMESA产率93.47％.通过元素分析和和红外光谱对产品结构进行了表征.%Quaternary cationic surfactant is a widely used chemical product. This article studied the synthesis of cationic triglyceride 2-hydroxy-N,N,N-trimethyl-3-stearin-propyl ammonium chloride (CMESA) by using quaternary ammonium etherification agent glycidyl trimethyl ammonium chloride (GTMAC) to modify stearic acid. The best synthesis conditions of CMESA were as follows: ultrasound frequency was 40 kHz, n (GTMAC) : n (stearic acid) = 1.5 : 1.0, reaction time was 2.5 h, pH= 6, reaction temperature was 40 ℃ , yield of CMESA was 93.47% , and the product structure was characterized by elemental analysis and IR.
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