Rheological Theory and Simulation of Surfactant Nematic Liquid Crystals - Self-Assembled Supramolecular Architectures: Lyotropic Liquid Crystals - page 24

TABLE 2.1 Examples of Nematic and Wormlike Surfactant Liquid Crystals

System Length/Diameter Application Concentration/Solvent LC Organization Reference

Potassium laurate (KL)and
sodium decylsulfate (SDS)
Temperature = 30 ° C

L e 200 Å and

D e

∼ Biological sensors

and mechanical
vibrations

27.5/6.24/66.26
KL/decanol/water
37/7/58 wt %
SDS/decanol/water

Rodlike ( R L )
Nematic phase
Disk - like (N D )
Nematic phase

Larson (1999)

∼ 2 0 Å

Cetylpyridinium chloride -
hexanol (CPCL - Hex)
Temperature

L e 150 Å and

D e

∼ Biological sensors

and mechanical
vibrations and
oil recovery
operations

33.7/76.3 wt %
CPCL - hex/water
35.4/64.6 wt %
CPCL - hex/water
38.8/51.2 wt %
40/60 wt %

Biphasic L 1 - N c
Nematic biphasic
Hexagonal phase

Larson (1999) ;
Cates and Candau (1990) ;
Berni et al. (2002);
Lu et al. (2008)

∼ 1 5 Å

= 30 ° C

Penta(ethylene glycol)
monododecyl ether C 12 E 5
Temperature

L e ∼ 200 Å and
D e ∼ 2 0 Å

Biological sensors
and mechanical
vibrations and
oil recovery
operations

< 30 wt %and
Sal < 12 wt %
30% < wt % < 35%
¾ 40 wt %
Solvent: water

Isotropic
L 1 - nematic - calamitic
(N L )
Hexagonal

Lu et al. (2008)

= 66 - 71 ° C

Hexadecyltrimethylammonium
p - toluenesulfonate CTAB
Temperature = 30 ° C

L e 150 Å and

D e

∼ Biological sensors

and mechanical
vibrations and
oil recovery
operations

< 33 wt %and

Sal

Isotropic
L 1 - nematic - calamitic
(N L )
Hexagonal phase

Lu et al. (2008)

∼ 2 0 Å 14 wt %

30%

<

< wt % < 35%

¾ 40 wt %
Solvent: hexanol/water

Sodium docecyl sulfate (SDS)
Temperature

Biological sensors
and mechanical
vibrations and
oil recovery
operations

Isotropic
L 1 - nematic - calamitic
(N L )
Hexagonal phase

Lu et al. (2008)

L e 200 Å and

D e

∼ < 31 wt %and

Sal

= 30 ° C

∼ 1 5 Å 13 wt %

30%

<

< wt % < 35%

¾ 38 wt %
Solvent: pentanol -
dodecadene