基于丙二酰胺结构不对称双子表面活性剂的合成及性能  

Synthesis and properties of a unsymmetrical Gemini surfactant based on the malonamide

作　　者：罗世宏[1] 潘忠稳[1] 陶明山[1] 薛伟[1] 陈庚[1] 

机构地区：[1]安徽大学化学化工学院,安徽合肥230036

出　　处：《应用化工》2013年第11期2036-2038,2041,共4页Applied Chemical Industry

摘　　要：在丙酮溶剂中,氯乙酸十六醇酯(Ⅰ)与过量的二(3-二甲氨基丙基)丙二酰胺反应,用乙醚洗涤后,再与溴代十六烷季铵盐化,经丙酮-乙腈混合溶剂重结晶,得到了一种新型基于丙二酰胺结构的不对称Gemini表面活性剂(命名为16-18),收率为51.2%(以Ⅰ计),纯度为99.6%。采用IR、1H NMR表征了结构,电导率法测定其CMC值为7.91×10-5mol/L,滴体积法测定其γCMC为37.87 mN/m,其Krafft点小于0℃,研究了其乳化、泡沫性能。Cetyl chloroacetate（ I ） reacted with excess bis [3-（dimethylamino） propyl] diethyl mal- onamide in acetone, washed with ether, and then quatemized with 1-bromohexadecane, the resulting qua- ternary salt with acetone-acetonitrile mixed solvent was recrystallized to obtain a novel of unsymmetrical Gemini surfactant based on the malonamide,named 16-18 ,with 51.2% yield （ based on I ）and 99.6% purity. The structure was confirmed by IRI1H NMR. The criticalmicelle concentration （CMC） was found to be 7.91×10-5 mol/L by measuring the electrical conductivity,and the surface tension TcMc was 37.87 rnN/m by a drop volume method,the Krafft point was below 0℃. Moreover,the forming property, emulsifying property were also studied.

关 键 词：含丙二酰胺结构不对称双子表面活性剂 合成 性能 

分 类 号：TQ216[化学工程—有机化工]