Solution Behavior and Liquid Crystalline Phases of α-Monoalkyl Glyceryl Ether/Water System

Tsutsumi, Hisao; Ishida, Atsuo

doi:10.5650/jos1956.33.270

Cited by 9 publications

(15 citation statements)

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“…formed in the presence of water is not specified yet. Owing to the formation of this molecular aggregate, it is hypothesized that GES could stabilize high water content W/O silicone emulsions, and this characteristic is similar to that of GE, which is known to form a strongly hydrophobic reversed hexagonal liquid crystal in the presence of water and also stabilizes high water content W/O emulsions (29,30). However, W/O silicone emulsions containing GES as a surfactant were very viscous although low-viscosity silicone oils were used.…”

Section: Introductionmentioning

confidence: 95%

“…2. Polydimethylsiloxane (PDMS; viscosity, 6 m Pa·s) was obtained from Shin-Etsu Chemical Industries Co. Ltd. GE used in this study was the same as that used in the previous study (29).…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, the oligomerized-type derivatives (undecylglycerylether-modified silicone, GES) are known to exhibit lower irritation than the nonoligomerized types (28). Also, the phase behavior of the binary systems of GES and water seems to be similar to that of α-mono long-chain alkylglycerylether (3-isooctadecyloxy-1,2-propanediol, GE; GE forms the molecular aggregate (reversed hexagonal-type liquid crystal) in the presence of water) (29), but the structure of the molecular aggregate (M.A.) formed in the presence of water is not specified yet.…”

Section: Introductionmentioning

confidence: 99%

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Interfacial Behavior of Mixed Systems of Glycerylether-Modified Silicone and Polyoxyethylene-Modified Silicone

Nagatani

Fukuda

Suzuki

2001

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 95%

“…2. Polydimethylsiloxane (PDMS; viscosity, 6 m Pa·s) was obtained from Shin-Etsu Chemical Industries Co. Ltd. GE used in this study was the same as that used in the previous study (29).…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Interfacial Behavior of Mixed Systems of Glycerylether-Modified Silicone and Polyoxyethylene-Modified Silicone

Nagatani

Fukuda

Suzuki

2001

Journal of Colloid and Interface Science

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“…Based on the 13 C-NMR spectra of the molecular aggregation of GES the reversed hexagonaltype liquid crystal formation was observed, similar to the binary system of glycerylether/water [33]. 2] In the ternary system of GES/PDMS/water, the molecular aggregation can orient in the interface between water and PDMS and is insoluble in PDMS.…”

Section: Figmentioning

confidence: 99%

Unique block molecules based on glycerol skeleton as C‐3 building blocks for liquid crystals formation by self‐assembly and their future potential for the “nano‐chemistry”

Urata

2003

Euro J Lipid Sci & Tech

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Studies on design of liquid crystalline block molecules with non-conventional mesophase morphoplogies have been proposed by Tschierske and co-workers. These block molecules have a rigid core, a lateral substituent, and an alkyl chain segmenting blocks from each other. Related to this, diglyceryl alkyl ethers found by us have glycerol as a rigid core, a lateral substituent, and an alkyl chain similar to the Tschierske design. These two cases are compared with each other with regard to the relationship between the molecular structure and the liquid crystalline morphologies and other properties. Recently, new soft materials suitable for liquid crystals exhibiting self-assembly of phase-segregated structures have been designed. Typical examples of such "block" molecules containing glycerol having a C-3 building block include: (i) undecyl-glycerylether-modified siloxane derivatives with a siloxane segment as the rigid core and alkyl chains with 2,3-dihydroxypropoxy group as a hydrophilic group at a lateral or terminal position of the siloxane segment; (ii) novel hyper branched dendrimers forming the basis of polyglycerol nanocapsules with a core-shell molecular architecture; (iii) carbon nanotubes based on cyclodextrins (CDs); (iv) polymerizable amphiphilic diacetylene-containing phospholipids suitable for construction of functional nanocomposites. This is done by self-assembly and polymerization of diacetylene creating a "block molecular structure" with a polyacetylene chain as a rigid core segment, the lipid headgroups as the hydrophilic segment, and terminal flexible alkyl chains. On the basis of these results, future potential of block molecules as a soft building material for liquid crystalline structures was discussed.

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“…Moreover, some emulsifi cation methods using lamellar liquid crystals that appear in low concentration range of monoalkyl glyceryl ether have also been developed 5,6 .…”

Section: Introductionmentioning

confidence: 99%

Phase Behavior and Hydrated Solid Structure in Lysophospholipid/Long-chain Alcohol/Water System and Effect of Cholesterol Addition

et al. 2010

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Phase behavior in lysophospholipid/long-chain alcohol/water system at 80°C was investigated using hexanol and oleyl alcohol as the long-chain alcohol. Similarly to hydrophilic surfactant, a micellar phase in a lysophospholipid/water system transitioned to a lamellar liquid-crystalline phase by the addition of long-chain alcohol. In the oleyl alcohol system the lamellar liquid-crystalline phase was observed in wider region compared to the hexanol system. The effect of cholesterol addition on the phase behavior was also studied. The region of liquid-crystalline phase and (reverse micellar + liquid-crystalline + water) phase shifted towards higher lysophospholipid concentrations. The structure of hydrated solid as well as the transition between lamellar liquid-crystalline phase and hydrated solid was analyzed by X-ray scattering measurement and differential scanning calorimetry measurement. It was revealed that the hydrated solid was α-type crystals with lamellar structure. The hydrated solid (gel)-liquid crystal transition temperature gradually decreased with increasing oleyl alcohol concentration and the decrement was enhanced by the addition of cholesterol.

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Solution Behavior and Liquid Crystalline Phases of α-Monoalkyl Glyceryl Ether/Water System

Cited by 9 publications

References 0 publications

Interfacial Behavior of Mixed Systems of Glycerylether-Modified Silicone and Polyoxyethylene-Modified Silicone

Interfacial Behavior of Mixed Systems of Glycerylether-Modified Silicone and Polyoxyethylene-Modified Silicone

Unique block molecules based on glycerol skeleton as C‐3 building blocks for liquid crystals formation by self‐assembly and their future potential for the “nano‐chemistry”

Phase Behavior and Hydrated Solid Structure in Lysophospholipid/Long-chain Alcohol/Water System and Effect of Cholesterol Addition

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