Aggregation of a semifluorinated n-alkane in perfluorooctane

Journal Article · Thu Jun 17 04:00:00 UTC 1993 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100126a033· OSTI ID:6028373

Nostro, P L; Chen, S H ^[1]

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1. Massachusetts Inst. of Technology, Cambridge (United States)

The phase behavior of solutions of two semifluorinated n-alkanes, heptadecafluorotetracosane (F(CF[sub 2])[sub 8](CH[sub 2])[sub 16]H) and pentacosafluorooctacosane (F(CF[sub 2])[sub 12](CH[sub 2])[sub 16]H), 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. The authors 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. 21 refs., 6 figs., 2 tabs.

• OSTI ID: 6028373
• Journal Information: Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 97:24; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400201* -- Chemical & Physicochemical Properties
ALKANES
COHERENT SCATTERING
COPOLYMERS
DIFFRACTION
DISPERSIONS
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROCARBONS
LIGHT SCATTERING
MAGNETIC RESONANCE
MASS SPECTROSCOPY
MICELLAR SYSTEMS
MIXTURES
NEUTRON DIFFRACTION
NUCLEAR MAGNETIC RESONANCE
OCTANE
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
POLYMERS
RESONANCE
SCATTERING
SMALL ANGLE SCATTERING
SOLUTIONS
SPECTROSCOPY
SYNTHESIS
VISCOSITY