Water in carbon dioxide microemulsions with fluorinated analogues of AOT

Authors
Citation
Zt. Liu et C. Erkey, Water in carbon dioxide microemulsions with fluorinated analogues of AOT, LANGMUIR, 17(2), 2001, pp. 274-277
Citations number
15
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
LANGMUIR
ISSN journal
07437463 → ACNP
Volume
17
Issue
2
Year of publication
2001
Pages
274 - 277
Database
ISI
SICI code
0743-7463(20010123)17:2<274:WICDMW>2.0.ZU;2-5
Abstract
A series of fluorinated analogues of AOT, the sodium salt of bis(3,3,4,4,5, 5,6,5,7,7,8,8,8-tridecafluorooctyl)-2-sulfosuccinate (CF3( CF2)(5)CH2CH2OOC CH2CH( SO3Na)COOCH2CH2(CF2)(5)CF3, di-HCF7), the sodium salt of bis(a,2,3,3 ,4,4,5,5-octafluoro-1-pentyl)-2-sulfosuccinate (H(CF2)(4)CH2OOCCH2CH-(SO3Na )COOCH2(CF2)(4)H, di-HCF4), and the sodium salt of bis(2,2,3,4,4,4-hexafluo robutyl)-2-sulfosuccinate (CF3CHFCF2CH2OOCCH2CH(SO3Na)COOCH2CF2CHFCF3, di-H CF3), were synthesized and characterized by (HNMR)-H-1. The pressure-temper ature phase diagrams for W/CO2 microemulsions stabilized by the three surfa ctants were determined. At a fixed temperature, cloud point pressures incre ased with increasing water-to-surfactant ratio. The water solubilization ca pacity increased in the order di-HCF4 > di-HCF3 > di-HCF7.