Cubic, Sponge, and Lamellar Phases in the Glyceryl Monooleyl Ether−Propylene Glycol−Water System

Langmuir ◽  
2007 ◽  
Vol 23 (20) ◽  
pp. 10020-10025 ◽  
Author(s):  
Sven Engström ◽  
Pia Wadsten-Hindrichsen ◽  
Bettina Hernius
Keyword(s):  
Propylene Glycol ◽  
Water System ◽  
Lamellar Phases

Coexistence of two lyotropic lamellar phases induced by a polymer in a phospholipidwater system

1997 ◽  
Vol 121 (2-3) ◽  
pp. 135-143 ◽  
Author(s):  
Bruno Demé ◽  
Monique Dubois ◽  
Thomas Zemb ◽  
Bernard Cabane
Keyword(s):  
Water System ◽  
Lamellar Phases

STUDIES ON ALDOSTERONE: I. ISOLATION FROM ADRENAL CORTICAL EXTRACT AND A TEST FOR ITS IDENTITY

1957 ◽  
Vol 35 (1) ◽  
pp. 71-78 ◽  
Author(s):  
Allan G. Gornall ◽  
Cynthia Gwilliam
Keyword(s):  
Ethyl Acetate ◽  
Propylene Glycol ◽  
Absorption Spectra ◽  
Water System ◽  
Characteristic Behavior ◽  
Blue Tetrazolium ◽  
Bio Assay ◽  
Phosphoric Acids

Details are given of a method which has proved very satisfactory for the isolation of aldosterone from commercial aqueous adrenal cortical extracts. The hormone was extracted with chloroform and separated by chromatography in the following systems: System I, benzene: 5% ethyl acetate/methanol: water; System II, toluene/propylene glycol; System III, benzene: 10% ethyl acetate/methanol: water. Identification of the isolated steroid was provided by: U.V. absorption, acetylation followed by chromatography, bio-assay, qualitative tests with blue tetrazolium and phenylhydrazine, absorption spectra in sulphuric and phosphoric acids, and crystallization. Quantitative estimations were made by U.V. absorption and the dinitrophenylhydrazine reaction. The latter method has been shown to exhibit with aldosterone a characteristic behavior that can assist in establishing the identity of this hormone. The yield from the extract principally employed was 4 μg. per ml.

Stabilization of Distearoylphosphatidylcholine Lamellar Phases in Propylene Glycol Using Cholesterol

2013 ◽  
Vol 10 (12) ◽  
pp. 4408-4417 ◽  
Author(s):  
Richard D. Harvey ◽  
Nargis Ara ◽  
Richard K. Heenan ◽  
David J. Barlow ◽  
Peter J. Quinn ◽  
...  
Keyword(s):  
Propylene Glycol ◽  
Lamellar Phases

STUDIES ON ALDOSTERONE: I. ISOLATION FROM ADRENAL CORTICAL EXTRACT AND A TEST FOR ITS IDENTITY

1957 ◽  
Vol 35 (1) ◽  
pp. 71-78 ◽  
Author(s):  
Allan G. Gornall ◽  
Cynthia Gwilliam
Keyword(s):  
Ethyl Acetate ◽  
Propylene Glycol ◽  
Absorption Spectra ◽  
Water System ◽  
Characteristic Behavior ◽  
Blue Tetrazolium ◽  
Bio Assay ◽  
Phosphoric Acids

Details are given of a method which has proved very satisfactory for the isolation of aldosterone from commercial aqueous adrenal cortical extracts. The hormone was extracted with chloroform and separated by chromatography in the following systems: System I, benzene: 5% ethyl acetate/methanol: water; System II, toluene/propylene glycol; System III, benzene: 10% ethyl acetate/methanol: water. Identification of the isolated steroid was provided by: U.V. absorption, acetylation followed by chromatography, bio-assay, qualitative tests with blue tetrazolium and phenylhydrazine, absorption spectra in sulphuric and phosphoric acids, and crystallization. Quantitative estimations were made by U.V. absorption and the dinitrophenylhydrazine reaction. The latter method has been shown to exhibit with aldosterone a characteristic behavior that can assist in establishing the identity of this hormone. The yield from the extract principally employed was 4 μg. per ml.

Density and Vapour Pressure of the Propylene Glycol-Water System from 15 to 50°C

2010 ◽  
Vol 84 (11) ◽  
pp. 1119-1130 ◽  
Author(s):  
J. R. Verlinde ◽  
R. M. H. Verbeeck ◽  
H. P. Thun
Keyword(s):  
Propylene Glycol ◽  
Vapour Pressure ◽  
Water System

Anomalous effects in experiments on monodomain nematic and lamellar phases of the caesium pentadecafluorooctanoate(CsPFO)/water system

1992 ◽  
Vol 11 (3) ◽  
pp. 311-324 ◽  
Author(s):  
N. Boden ◽  
G. R. Hedwig ◽  
M. C. Holmes ◽  
K. W. Jolley ◽  
D. Parker
Keyword(s):  
Water System ◽  
Lamellar Phases

Rheological Properties of the Reverse Mesophases of the Pluronic L64/P-Xylene/Water System

2004 ◽  
Vol 14 (6) ◽  
pp. 315-323 ◽  
Author(s):  
Luigi Coppola ◽  
Domenico Gabriele ◽  
Isabella Nicotera ◽  
Cesare Oliviero
Keyword(s):  
Phase Transition ◽  
Crystalline Phase ◽  
Liquid Crystalline ◽  
Ternary Phase Diagram ◽  
Water System ◽  
Water Concentration ◽  
Liquid Crystalline Phase ◽  
Lamellar Phases ◽  
Different Temperatures ◽  
Mechanical Spectra

Abstract The behaviour of reverse micellar solution and reverse hexagonal and lamellar liquid crystal phases in pluronic L64/water/p-xylene ternary system was investigated by rheological techniques. Samples with an increasing water content along the amphiphilic copolymer-lean side of the ternary phase diagram were analysed at different temperatures and a different behaviour was evidenced by both dynamic and steady tests for each considered phase, depending on the morphology of structure (micellar, lamellar, hexagonal phases). It was observed that the reverse micelles size increases with increasing water concentration and decreases with increasing temperature, without any phase transition. On the contrary the normal micelles become anisometric on temperature, showing a transition to a liquid crystalline phase. The observed mechanical spectra of the liquid crystalline phases are typical of hexagonal and lamellar phases according to the literature [1, 2]. A phase transition with temperature was found for both liquid crystalline phase (lamellar and hexagonal) by rheological tests and was confirmed by ocular inspection.

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.

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