硼酸双甘油葡萄糖苷月桂酸酯的合成及性能研究

以甘油葡萄糖苷、硼酸为原料,以对甲苯磺酸做催化剂,与月桂酸经酯化反应合成硼酸双甘油葡萄糖苷月桂酸酯表面活性剂,并采用红外光谱仪、核磁共振谱仪表征产物结构.实验结果表明:硼酸双甘油葡萄糖苷酯作为中间体与月桂酸进行反应,以用量为反应物总质量0.5%的对甲苯磺酸为催化剂,用30 mL的乙腈作为溶剂,在80℃下反应150 min,得到目标产物;其表面活性剂的表面张力为36.0 mN/m(20℃),临界胶束浓度为1.16×10-2 mol/L,并显示出良好的乳化性能.

Synthesis and properties of double-glycerol glycosides borate laurate surfactant

Double-glycerol glycosides borate laurate surfactant is prepared by taking glycerol glucoside boric acid,lauric acid as main materials,and it is analyzed and characterized by IR and 1H-NMR.The experimental results show that double-glycerol glucoside borate ester as an intermediate,which is reacted with lauric acid,catalysed by paratoluenesulfonic acid,the double-glycerol borate laurate glycosides is obtained with the total amount of catalyst for the reaction of 0.5%,30 mL of acetonitrile as solvent and reaction time 150 min.Besides,the critical micelle concentration and the corresponding surface tension of the target product are 1.16×10-2 mol/L and 36.0 mN/m(20 ℃),respectively.The target product shows good emulsifiability.