聚氧乙烯化羧基甜菜碱的性能研究  

Performance of ethoxylated betaine surfactant

作　　者：夏琪波 罗华 刘雪锋 方云 

机构地区：[1]江南大学化工与材料工程学院,江苏无锡214122

出　　处：《日用化学工业》2013年第2期105-108,共4页China Surfactant Detergent & Cosmetics

基　　金：江苏省高校"青蓝工程"青年骨干教师资助项目(苏教师[2010]27号);浙江赞宇科研基金资助项目;江苏省精细石油化工重点实验室开放基金资助项目(KF0903)

摘　　要：对自制的在疏水碳链与亲水基团间嵌插有聚氧乙烯片段的非离子/两性离子型表面活性剂聚氧乙烯化羧基甜菜碱(EBS)的性能进行了研究,并对其结构作了表征。用吊环法测得了EBS在25℃时的γ-lg c曲线,得到EBS的cmc为1.12×10-4mol·L-1;与结构相近的十二烷基二甲基羧基甜菜碱(BS-12)相比,两者抗硬水性能相当,但是EBS的耐盐(NaCl)性、钙皂分散力、泡沫和润湿性能明显更好。Noniouic/zwitterionic surfactant, namely ethoxylated betaine surfanctant （EBS）, was synthesized starting from sodium alcohol ethoxylate sulfate, dimethylamine and sodium chloroacetate by a two -step process. Molecular structure of EBS with an ethoxylate segment between hydrophobic carbon chain and hydrophilic group was characterized by FTIR and ESI - MS. The cmc of EBS is 1.12 × 10^-4 mol · L-1 at 25 ℃. Compared with a surfactant that has similar molecular structure, lauryl betaine （ BS - 12 ）, they show equivalent resistance to hard water ,but performance of EBS for salt （NaCl） tolerance ,foaming power,wetting power and lime soap dispersing power is significantly superior to that of BS - 12.

关 键 词：非离子 两性离子型表面活性剂 聚氧乙烯化羧基甜菜碱 合成 耐盐性 

分 类 号：TQ423[化学工程]