Phase diagram of the cholesteric lyotropic mesophase potassium laurate/1-decanol/D/sub 2/O/brucine sulfate/ferrofluid

Journal Article · Thu Mar 12 04:00:00 EST 1987 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100290a037· OSTI ID:6774877

Neto, A M.F.; Helene, M E.M.

A surface of the phase diagram of the cholesteric lyotropic liquid crystal potassium laurate/1-decanol/D/sub 2/O/brucine sulfate heptahydrate/ferrofluid is studied by optical microscopy and X-ray diffraction as a function of the temperature and the relative molar concentration of brucine. The cholesteric pitches as a function of the brucine content are shown to have two independent behaviors for low and high brucine concentration. The brucine doping and its influence in favoring the cholesteric discotic phase formation are discussed in terms of the brucine packing at the electric double layer and its influence on the orientational fluctuations.

• Research Organization: Universidade de Sao Paulo, Brazil
• OSTI ID: 6774877
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:6; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
ALCOHOLS
ALKALI METAL COMPOUNDS
CARBOXYLIC ACIDS
COHERENT SCATTERING
CRYSTALS
DATA
DECANOLS
DIAGRAMS
DIFFRACTION
DODECANOIC ACID
EXPERIMENTAL DATA
FERROMAGNETIC MATERIALS
FLUIDS
HEAVY WATER
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
LIQUIDS
MAGNETIC MATERIALS
MATERIALS
MICELLAR SYSTEMS
MICROSCOPY
MONOCARBOXYLIC ACIDS
NUMERICAL DATA
OPTICAL MICROSCOPY
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHASE STUDIES
POTASSIUM COMPOUNDS
QUANTITY RATIO
SCATTERING
SULFATES
SULFUR COMPOUNDS
TEMPERATURE DEPENDENCE
WATER
X-RAY DIFFRACTION