TITLE:
Synthesis of Cardanol Sulfonate Gemini Surfactant and Enthalpy-Entropy Compensation of Micellization in Aqueous Solutions
AUTHORS:
Weiguang Shi, Pengxiang Wang, Cuiqin Li, Jie Li, Haiyan Li, Zhiqiu Zhang, Song Wu, Jun Wang
KEYWORDS:
Cardanol, Gemini Surfactant, Micellization, Enthalpy-Entropy Compensation
JOURNAL NAME:
Open Journal of Applied Sciences,
Vol.4 No.6,
May
19,
2014
ABSTRACT: A novel cardanol sulfonate Gemini surfactant with high surface properties was synthesized by cashew phenol, 1,3-dibromopropane and chlorosulfonic acid through three steps procedure of etherification, sulfonation and neutralization. A surface tension method was employed to investigate the thermo-dynamic properties of micellization in aqueous solution for cardanol sulfonate Gemini surfactant synthesized in laboratory. As a result, the micellization of cardanol sulfonate Gemini surfactant in aqueous solutions is spontaneous and entropy-driven. The micellization process is enthalpy-entropy compensated with the compensation temperature (Tc) of 308 ± 1 K.