Liquid crystalline phases of the sodium decylsulfate/decanol/water system. Nematic-nematic and cholesteric-cholesteric phase transitions

1980 ◽  
Vol 102 (15) ◽  
pp. 4879-4883 ◽  
Author(s):  
L. J. Yu ◽  
A. Saupe
Keyword(s):  
Phase Transitions ◽  
Liquid Crystalline ◽  
Water System ◽  
Crystalline Phases ◽  
Cholesteric Phase ◽  
Liquid Crystalline Phases ◽  
Sodium Decylsulfate

scholarly journals Phase behavior, rheology, and release from liquid crystalline phases containing combinations of glycerol monooleate, glyceryl monooleyl ether, propylene glycol, and water

RSC Advances ◽  
2017 ◽  
Vol 7 (52) ◽  
pp. 32966-32973 ◽  
Author(s):  
Hanne Evenbratt ◽  
Anna Ström
Keyword(s):  
Phase Diagram ◽  
Phase Transitions ◽  
Phase Behavior ◽  
Propylene Glycol ◽  
Liquid Crystalline ◽  
Water System ◽  
Crystalline Phases ◽  
Quaternary Phase ◽  
Liquid Crystalline Phases ◽  
Glycerol Monooleate

Quaternary phase diagram of the GMO/GME/PG and water system is determined, allowing for controlled phase transitions triggered by temperature or humidity.

Mixed-dimer formation in binary systems of 4-substituted benzoic acids and structure considerations

2008 ◽  
Vol 86 (6) ◽  
pp. 525-532 ◽  
Author(s):  
Maren Roman ◽  
Annett Kaeding-Koppers ◽  
Peter Zugenmaier
Keyword(s):  
Benzoic Acid ◽  
Crystalline Phase ◽  
Liquid Crystalline ◽  
Binary Systems ◽  
Benzoic Acids ◽  
Dimer Formation ◽  
Crystalline Phases ◽  
Cholesteric Phase ◽  
Liquid Crystalline Phases ◽  
Substituted Benzoic Acids

The phase behavior of binary systems of 4-substituted benzoic acids is governed by the formation of mixed dimers. This study was conducted to determine the effect of the components’ structural difference on mixed-dimer formation in crystalline and liquid-crystalline phases. The phase diagrams of two systems, with 4-[(S)-(–)-2-methylbutoxy]benzoic acid (MBOBA) as one component and 4-(hex-5-enoxy)benzoic acid (HOBA) and 4-(dec-9-enoxy)benzoic acid (DOBA), respectively, as the second component, were determined by differential scanning calorimetry, polarized-light microscopy, and X-ray diffraction. The MBOBA-HOBA system exhibited a cholesteric phase, two solid solutions, and above 58 °C for compositions between 40 and 80 mol% HOBA a crystalline phase of mixed dimers. The MBOBA-DOBA system showed a crystalline phase of mixed dimers at all compositions, a cholesteric phase, and a twisted smectic C phase, which was dominated by mixed dimers at 60 and 70 mol% DOBA. We conclude that liquid-crystalline phases are generally dominated by mixed dimers, but in crystalline phases the formation of mixed dimers is promoted by a greater difference in molecular structure. The crystal structure of two of the pure compounds MBOBA and DOBA and comparable compounds have been determined for an evaluation of the arrangements of the molecules in the crystal and liquid-crystalline state.Key words: benzoic acid, crystal arrangement, phase diagrams, liquid crystal.

scholarly journals pH dependent isotropic to nematic phase transitions in graphene oxide dispersions reveal droplet liquid crystalline phases

2014 ◽  
Vol 50 (50) ◽  
pp. 6668-6671 ◽  
Author(s):  
Rachel Tkacz ◽  
Rudolf Oldenbourg ◽  
Shalin B. Mehta ◽  
Morteza Miansari ◽  
Amitabh Verma ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Phase Transitions ◽  
Crystalline Phase ◽  
Nematic Phase ◽  
Liquid Crystalline ◽  
Liquid Crystalline Phase ◽  
Crystalline Phases ◽  
Liquid Crystalline Phases ◽  
Ph Dependent ◽  
Droplet Liquid

The existence of a droplet liquid crystalline phase of graphene oxide (GO) is reported.

Towards redox active liquid crystalline phases of lipids: a monoolein/water system with entrapped derivatives of ferrocene

2003 ◽  
Vol 123 (1) ◽  
pp. 87-97 ◽  
Author(s):  
Justas Barauskas ◽  
Valdemaras Razumas ◽  
Zita Talaikyt≐ ◽  
Arūnas Bulovas ◽  
Tommy Nylander ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Water System ◽  
Crystalline Phases ◽  
Redox Active ◽  
Liquid Crystalline Phases ◽  
Active Liquid ◽  
Derivatives Of

Characterization of the Liquid−Crystalline Phases in the Glycerol Monooleate/Diglycerol Monooleate/Water System

Langmuir ◽  
2000 ◽  
Vol 16 (15) ◽  
pp. 6358-6365 ◽  
Author(s):  
Paolo Pitzalis ◽  
Maura Monduzzi ◽  
Niels Krog ◽  
Helena Larsson ◽  
Helena Ljusberg-Wahren ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Water System ◽  
Crystalline Phases ◽  
Liquid Crystalline Phases ◽  
Glycerol Monooleate
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