双十二烷基对苯二甲酰胺丙酸钠的合成与表面活性  

Synthesis and Properties of Sodium Dilauroylterephthalamide Propionate Acid

作　　者：王培义[1] 尹浩[1] 张应军[1] 

机构地区：[1]郑州轻工业学院河南省表界面科学重点实验室,河南郑州450002

出　　处：《精细化工》2010年第7期650-653,666,共5页Fine Chemicals

摘　　要：以十二胺、丙烯酸甲酯、对苯二甲酰氯等为主要原料经加成、酰胺化、皂化等反应合成了酰胺型羧酸盐Gemini表面活性剂——N,N′-双十二烷基对苯二甲酰胺丙酸钠(SDPA-12)。经单因素考察酰胺化反应得出最佳工艺条件为:n(N-十二烷基-β-氨基丙酸甲酯)∶n(对苯二甲酰氯)=2.2∶1,35℃回流反应8h,收率68.7%;经红外光谱、元素分析和核磁共振波谱对产物结构进行了确认。性能测定表明,25℃时SDPA-12的表面张力为27.09mN/m,临界胶束浓度为1.83×10-5mol/L。With dodecylamine,methyl acrylate and terephthaloyl chloride as raw materials,sodium N,N＇-dilauroylterephthaloylamide propionate acid（SDPA-12）is synthesized by addition reaction,amidation and saponification.The influences of the reaction temperature,reaction time and ratios of reactants on the conversion in the amide reaction were investigated.The optimum reaction conditions were：n（N-dodecyl-β-amino propionate acid methyl ester）∶n（terephthaloyl chloride）=2.2∶1,reaction temperature is 35 ℃and reaction time is 8 h.Under these conditions,the conversion of terephthaloyl chloride is 68.7%.The SDPA-12＇s structure were proved by elementary analysis,IR and NMR（The SDPA-12＇s structure were proved by confirming DPA-12＇s structure,DPA-12：N,N＇-dilauroylterephthaloylamide propionate acid）.Experimental results show that SDPA-12 had a good surface activity,and the surface tension is 27.09 mN/m,and the critical micelle concentration is 1.83×10^-5 mol/L.

关 键 词：双子表面活性剂 N N′-双十二烷基对苯二甲酰胺丙酸钠 对苯二甲酰氯 N-十二烷基-β-氨基丙酸甲酯 

分 类 号：TQ423.11[化学工程]