摘要
该文以多种脂肪醇醚AEO3、AEO4、AEO7 和AEO9 合成了相应的脂肪醇醚羧酸钠产品AE3C、AE4C、AE7C和AE9C。实验发现,采用无机碱时,合成的优化工艺条件为∶反应物摩尔比n(脂肪醇醚)∶n(氯乙酸) =1∶1 3,反应温度为 100℃,反应时间 11h,质量产率可达 95 .4%。测定了产品的表面化学性能和应用性能。AEC与非离子表面活性剂AEO7 的表面张力相当,但AEC的临界胶束浓度远大于AEO7,AEC的胶束聚集数远小于AEO7。随着环氧乙烷数量的增加,AEC的发泡力和去污力随之增加,乳化力、润湿力则随之减弱。
Some kinds of fatty alcohol ether carboxylates (AEC: C 12H 25O(CH 2CH 2O) nCH 2COONa, n=3,4,7,9) were synthesized in which some kinds of fatty alcohol ether (AEO: C 12H 25O(CH 2CH 2O) nH, n=3,4,7,9) were used. The optimum reaction conditions were determined with n (fatty alcohol ether)∶n (chloroacetic acid) = 1∶1 3, at 100℃, for 11 h, to attain 95 4% yield. The surface properties of different products were measured. The results show that AEC is as much as AEO 7 in the surface tension, more than AEO 7 in CMC and less than AEO 7 in micellar aggregation number and that all of AECs exhibit good foaming and detergent and decrease in emulsification and wetting with the increasing number of EO residue.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2005年第1期62-65,共4页
Journal of Nanjing University of Science and Technology
关键词
脂肪醇醚羧酸盐
阴离子表面活性剂
羧甲基化
fatty alcohol ether carvoxylate
anionic surfactants
carboxy-methoylate
