Premium
Synthesis and Physicochemical Investigation of Long Alkylchain Betaine Zwitterionic Surfactant
Author(s) -
Qi Liyun,
Fang Yun,
Wang Zeyun,
Ma Na,
Jiang Liangyu,
Wang Yiyou
Publication year - 2008
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-007-1054-2
Subject(s) - chemistry , betaine , pulmonary surfactant , surface tension , alkyl , micelle , chemical engineering , organic chemistry , thermodynamics , aqueous solution , biochemistry , physics , engineering
An effective and economic two‐step route was developed to synthesize the long alkyl chain betaine zwitterionic surfactant directly from natural fatty acids. The optimal processing conditions for synthesizing the intermediate and final product were probed and the yields of 96.4% and 88.3% were obtained for each step, respectively. The surface active behavior of the synthesized decylbetaine surfactant was investigated using the surface tension method. The related thermodynamic parameters were calculated and discussed. The fluorescence probe technology was applied to determine the micropolarity of decylbetaine micelles.