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

Journal Article · Thu Mar 12 00:00:00 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), Vol. 91:6
• Country of Publication: United States
• Language: English

Related Subjects

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