作　　者： ; ; ;

机构地区： 大连理工大学化工学院石油化工学院精细化工国家重点实验室

出　　处： 《现代化工》 2003年第10期40-42,共3页

摘　　要： 通过把微细蔗糖和硬脂酸甲酯制成粗分散体系(粒径小于10μm),用无溶剂法制备出了单酯含量高达79.8%的蔗糖酯。与其他典型的方法不同,该方法仅用4%的皂就可使硬脂酸甲酯转化率超过99%,大大减少了皂的用量。而且用相同量的皂就可制备出不同单酯含量的蔗糖酯,产率最高可达62.4%。考察了这种新反应体系的温度、催化剂量、皂的量和反应时间等不同条件下硬脂酸甲酯的转化率,还测定了不同单酯含量蔗糖酯的亲水亲油平衡(HLB)值、表面张力、界面张力和临界胶束浓度,揭示了它们之间的相互关系。 The sucrose esters containing about 80% monoester were prepared with free of solvent by dispersing fine sucrose in methyl stearate to form dispersion with particle size less than 10 μm. In contrast with other typical methods, the conversion of methyl stearate in the disperse system could exceed 99% with only 4% of soap (mass ratio) which decreased greatly. The sucrose esters containing different amount of monoesters can be prepared by using equal quantity of soap, and the yield can reach up to 62.4%. For a new method for synthesizing sucrose esters with a higher proportion of monoesters, the effects of temperature, catalysts, soap quantity and reaction time on the conversion of methyl stearate were studied. After purification, the HLB value, surface tension, interfacial tension and CMC of sucrose esters with different monoesters were examined, and the relations among them were discovered.

关 键 词： 蔗糖酯 无溶剂制备 蔗糖单酯 精制

领　　域： [化学工程]