摘要
以氯磺酸为磺化剂,分别与硬脂酸和月桂酸进行磺化反应,制备了中间体α-磺基硬脂酸和α-磺基月桂酸。将中间体α-磺基硬脂酸分别与乙二醇、1,4-丁二醇、1,6-己二醇和聚乙二醇400以及α-磺基月桂酸与乙二醇进行酯化反应,最后中和成盐,制备出5种磺酸系双子表面活性剂。通过FTIR和1HNMR对目标产物进行了表征。通过正交试验对磺酸系双子表面活性剂制备的酯化工艺进行了优化,得到较优的酯化工艺条件。对制备的磺酸系双子表面活性剂的基本物化性能进行了研究,结果表明,临界胶束浓度(cmc)随联结基团长度的增加而降低,同时随着疏水链的增长,γcmc呈增大的趋势,且双子表面活性剂的乳化性和起泡性均优于同类结构的单基阴离子表面活性剂。
Intermediates,α - sulfostearic acid and a - sulfolauric acid, were prepared by reacting chlorosulfonic acid with stearic acid and laurie acid respectively. Five kinds of sulfonie acid gemini surfactant were prepared by reacting α - sulfostearie acid with ethanediol, 1,4 - butanediol, 1, 6 - hexanediol and poly ethanediol respectively as well as α - sulfolauric acid with ethanediol. All the sulfonated intermediates were neutralized to form the corresponding salts and thereby five kinds of sulfonic acid gemini surfactant were prepared. Molecular structures of the gemini surfactants were characterized by FTIR and ^1HNMR. Optimal esterification reaction conditions for preparation of the gemini surfactants were obtained through orthogonal designed experiments. Basic physical -chemical properties of the gemini surfactants were studied. Results showed that following the increase of carbon chain length of the spacing group, its cmc reduces correspondingly. Meanwhile, following the increase of the carbon chain length of the hydrophobic group, its γcmc increases correspondingly. Emulsification and foam properties of the sulfonic acid series gemini surfactants are better than that of the corresponding single body sulfonic acid surfactants.
出处
《日用化学工业》
CAS
CSCD
北大核心
2012年第6期428-431,共4页
China Surfactant Detergent & Cosmetics
基金
国家高等学校大学生实践创新训练计划资助项目
关键词
磺酸系双子表面活性剂
制备
物化性能
sulfonic acid series gemini surfactants
preparation
physical- chemical properties
