邻苯二甲酸酯Gemini表面活性剂的合成及性能研究

Study on Synthesis and Properties of Gemini Surfactant with Phthalate

摘要:

研究采用N,N-二甲基乙醇胺与邻苯二甲酰氯反应得到二（二甲基胺基乙基）邻苯二甲酸酯（I），然后（I）再与正溴代十六烷反应，经处理后得到邻苯二甲酸酯基Gemini表面活性剂SHZ16,收率83%（以邻苯二甲酰氯计）。用两相滴定法分析其纯度为99.2%。采用电导法测定了其CMC值为2.02×10-5mol/L，采用滴体积法测定了CMC为41.87mN/m, 并研究了其増溶性、粘度、乳化性能和泡沫性质，其性能优于传统表面活性剂十二烷基硫酸钠（SDS）。

Abstract:

A Gemini surfactant with phthalate ester (SHZ16) was prepared from bis [2- (dimethylamino) ethyl] phthalic ester (I) which was obtained by reacting 2-(dimethylamino) ethanol with phthaloyl dichloride and bromohexadecane, yield 83% (based on phthaloyl dichloride) with the purity of 99.2% (two-phase chemical titration analysis).The criticalmicelle concentration (CMC) was found to be 2.02×10-5mol/L by measuring the electrical conductivity of SHZ16, and its surface tension CMC is 41.87mN/m by a drop volume method. Its edition soluble, viscosity, emulsifying property and foaming property were also studied. The results indicated that SHZ16 is better than traditional surfactant sodium dodecyl sulfate (SDS).