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Citation: Zhu Bu-Yao, Zhang Pu, Huang Jian-Bin, Zhao Guo-Xi. An Investigation on the Aqueous Surfactant Two Phase in Mixed Carboxylate-Alkyl Pyrridinium Salt Systems[J]. Acta Physico-Chimica Sinica, ;1999, 15(02): 110-115. doi: 10.3866/PKU.WHXB19990204 shu

An Investigation on the Aqueous Surfactant Two Phase in Mixed Carboxylate-Alkyl Pyrridinium Salt Systems

1.
Chemistry Department,Peking University,Beijing 100871

Received Date: 20 May 1998
Available Online: 15 February 1999

The Phenomenon of two diluite aqueous phases coexisting in mixed aqueous solutions of carboxylates and alkyl pyrridmmin salts were investigated This phenomenon occurs in limit range of composition of system: limited carbon nuuber in hydrophobic groups of surfactants: limited miolar ratio of cationic and anionic surfactants; and limited concentration of surfactants. The coexistent two phases contain large amount of water , more than 95% in-both The upper phases are richer in surfactants being more than twenty fold of the concentration in lower phase Vesicular structure exists in upper and lower Phases, which are aggregated in upper phases and dispersed in the lower. The molecular ratio of cationics and maniocs is more close to 1 in upper phase than that in lower phase. The concentration of inorganic ions is almost the same in both phases.
- Aqueous surfactant two phase,
- Vesicles,
- Mixed cationic-anionic system,
- Carboxylates,
- Alkyl pyrridinium aslts
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