colour images from S.T. HYDE, "Identification of Lyotropic Liquid Crystalline Mesophases",

Handbook of Applied Surface and Coll.oid Chemistry (K. Holmberg, ed.) John Wiley and Sons (2001)

Figure 35.  Plate 1

 

 

 

 

 

All strontium myristate. Top left: 100x crossed polars, room temperature lamellar; top right: lamellar, 90˚C; middle left: rhombohedral, 100x, crossed polars, gypsum plate in, heated to 218˚C; middle right: 200x, crossed polars, gypsum plate in, cooled from rhombohedral-cubic phase boundary, oscillated near 210 -215˚C – rhombohedral (bright) and cubic (dark); bottom left: 100x, parallel polars, cooled to 210˚C from 218˚C - cubic to rhombohedral transition; bottom right: 200x, crossed-polars, gypsum plate in, cooled from 290˚C and oscillated near 260˚C – hexagonal. All images courtesy of Robert Corkery.

 

 

 

 

 

HYDE, Plate 2

 

 

All copper myristate. Top left: 100x, 70˚C - lamellar; top right: 100x 116.3˚C - lamellar; middle left: 100x, crossed polars, 140.0˚C - hexagonal; middle right: 100 or 200x, crossed polars, 189˚C - hexagonal; bottom left: 200x, crossed polars, 198˚C - hexagonal; bottom right: 100x, cooled from 190.8˚C to room temperature, parallel polars - lamellar with remnant hexagonal textures. All images courtesy of Robert Corkery.

 

 

 

 

 

 

 

 

 

 

Plate 3

 

 

 

Left image: Zirconium myristate/myristic acid, cooled to room temperature from 119˚C, hexagonal, 40x - crossed polars, gypsum plate in; right image: 100x, otherwise as above.All images courtesy of Robert Corkery.

 

 

 

All calcium myristate. Top left: Heated to 90.2˚C - lamellar, crossed polars, gypsum plate in; top right: cooled to 90.0˚C - lamellar, crossed polars, gypsum plate in; bottom left: 144.8˚C - tetragonal, crossed polars; bottom right: cooled to 20˚C from 90˚C - lamellar, crossed polars, gypsum plate in. All images courtesy of Robert Corkery.

 

 

 

 

 

Plate 4

 

 

 

All lead myristate. Top left: Cooled from melt into “bâtonnet”(crystalline) phase, 100x, crossed polars, gypsum plate in; top right: ca. 108-110˚C, cooling transition from hexagonal to bâtonnet, 100x, partially crossed polars, gypsum plate in; bottom left: 112˚C, hexagonal (cooled from melt), 200x, crossed polars, gypsum plate in; bottom right: ca. 108-110˚C, cooling transition from hexagonal to bâtonnet, 200x, crossed polars, gypsum plate in. All images courtesy of Robert Corkery.

 

 

 

Plate 5

 

Top left: Lanthanum myristate (Lamy) - 120.1˚C, smectic C, crossed polars, gypsum plate in; top right: Lamy - 152.3˚C, smectic C’, 100x, crossed polars, gypsum plate in; middle left: Lanthanum palmitate - 126.3˚C, smectic C; crossed polars, gypsum plate in; middle right: Lamy - 152.3˚C, immediately post melting, crossed polars, gypsum plate in; bottom left: Cerium stearate (Cest) - 79.6˚C, lamellar phase, parallel polars; bottom right: Cest - 124.0˚C, smectic C, crossed polars, gypsum plate in. All images courtesy of Robert Corkery.