WANG Shihu, SHAO Hongyun, SUN Meijuan, et al. Influence of salts on behavior of cationic and anionic surfactant aqueous mixture[J]. CIESC Journal, 2006, (6): 1395-1398.
WANG Shihu, SHAO Hongyun, SUN Meijuan, et al. Influence of salts on behavior of cationic and anionic surfactant aqueous mixture[J]. CIESC Journal, 2006, (6): 1395-1398.DOI:
Aqueous two-phase system (ATPS) can be formed in the mixture of cationic and anionic surfactants solution.In the pseudo ternary phase diagram of SDS/CTAB/H2O/salt
there are two ATPS regions.The one
in which the content of anionic surfactant is more than cationic surfactant
is called ATPSa; the other one
on the contrary
is called ATPSc.The position and width of ATPSa and ATPSc are influenced by salt
which is added in the system.The cation of salt mainly affect ATPSa.The larger the radius of salt cation
the nearer the ATPSa moves to the anionic surfactant
and the larger the ATPSa width.The anion of salt is the main factor affecting ATPSc.