Green synthesis and properties of new quaternary ammonium salt surfactants
Conventional quaternary ammonium salt surfactant, which is one of the most widely used cationic surfactant, has some toxicity and poor biodegradability.In order to obtain better properties of the cationic surfactants, while resolving toxicity and biodegradability, three series of quaternary ammonium salts with new counterions were synthesized by use of non-toxic green chemical material-dimethyl carbonate.The surface activities of these compounds were measured.Adsorption and micellization free energies of these quaternary ammonium salts in their solutions showed a good tendency towards adsorption at the interfaces.It is very significant that their surface activities are higher and they are highly effective aqueous surfactants.Studies also have shown that the interaction between the counterion and the cationic charged group has a significant influence on surface tension.Furthermore, the surface tension value increases with the hydrophilicity of the counteranion increasing.
Quaternary ammonium salt Synthesis Dimethyl carbonate Surface properties
Hongqin Liu Baocai Xu Jun Hu Fei Li Dan Liu
School of Food and Chemical Engineering, Beijing Key Laboratory of Flavor Chemistry, Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing Technology and Business University, No.11 Fucheng Road, Beijing 100048, P.R.China
国内会议
上海
英文
35-39
2016-04-27（万方平台首次上网日期，不代表论文的发表时间）