【摘 要】
：
A series of piperazine-based Gemini and Bola surfactants were synthesized. Gemini 1and 5 have well surface activities. Their critical micelle concentrations (cm
【机 构】
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School of Chemical Engineering and the Environment
【基金项目】
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the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
论文部分内容阅读
A series of piperazine-based Gemini and Bola surfactants were synthesized. Gemini 1and 5 have well surface activities. Their critical micelle concentrations (cmc) is 6.47×10-4 mol/L and 1.17×10-3 mol/L, respectively. Bola surfactants 2 and compound 3, possessing better water solubility, have lower surface activities. Calculation, carried out by MM2 energy minimization,showed that compound with more hydrophobic chains in a spacer of limited length is difficult to be synthesized.
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