Journal of Physical Chemistry p. 6535 - 6540 (1993)
Update date:2022-08-03
Topics:
Nostro, Pierandrea Lo
Chen, Sow-Hsin
The phase behavior of solutions of two semifluorinated n-alkanes, heptadecafluorotetracosane (F(CF2)8(CH2)16H) and pentacosafluorooctacosane (F(CF2)12(CH2)16H), in perfluorooctane and isooctane is studied.Viscosity, dynamic light-scattering, and small-angle neutron-scattering data show the presence of small, nearly spherical aggregates in heptadecafluorotetracosane/perfluorooctane solutions in the liquid phase above the critical micelle concentration.We determined the size and average aggregation number of these aggregates as a function of the fluorohydrocarbon concentration.Small-angle neutron-scattering results show that the perfluorooctane solvent penetrates appreciably into the micellar core.
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