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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质量分数为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γCMC为41.87 mN/m,并考察了其增溶性、黏度、乳化性能和泡沫性质,该性能优于传统表面活性剂十二烷基硫酸钠(SDS)。
N, N-dimethylethanolamine is reacted with phthaloyl chloride to give bis (dimethylaminoethyl) phthalate (I), which is then reacted with n-bromohexadecane to give Phthalate-based Gemini surfactant SHZ16 was obtained after treatment in a yield of 83% (based on phthaloyl chloride). The two-phase titration method was used to analyze the mass fraction of 99.2%. Its CMC value was determined to be 2.02 × 10-5mol / L by conductivity method. The γCMC was 41.87 mN / m by drop volume method. The solubilities, viscosities, emulsifying properties and foam properties were also evaluated. Surfactant sodium dodecyl sulfate (SDS).