Synthesis And Characterization Of Sulfonic Gemini Surfactants

Gemini surfactants are made up of two identical amphiphilic moieties covalently connected at the level of the headgroups by a spacer group which has been proved to have predominant surfactant active than ordinary surfactants to analyze the structure of Gemini surfactants in or outsides. We designed sulfonic Gemini surfactant's structure and the rational synthesis route.In order to avoid the environment pollute problem caused by hydrophobe group's highly offshoot ,we adopted the way of first acyl,and than deoxidize, insure the hydrophobe group are straight chains.Through the synthesis of 1,2-Ditolyl ethane,we can find that,when we joint toluene molecule together in Fridel-crafts reaction, the products are the mixture of isomers. So we connected benzene to different groups , then joint acyl, and deoxidize in the end. In this way we can achieve our purpose evenly. The structure of the products are identified by H'- NMR,IR,GC-MS.In the choice of sulfonate reagent ,we select oil of vitriol,oleum,chlorosulfonic acid as sulfonate reagent。...