
17 Liquid Crystal Polymers
Liquid crystals were discovered by the botanist
Friedich Reinitzer
1
[1,2], although the first observa-
tion of liquid crystals can be likely ascribed to George-
Louis LeClerc [3]. Aftertheir discovery, liquid crystals
were considered for a long time as a curiosity.
Engaged with the constitution of cholesterol, for
cholesteryl benzoate Reinitzer reported two phase
transitions in the course of melting. Melting starts with
the formation of a cloudy liquid, which transforms on
further heating into a clear liquid. This type of liquid
crystal is known as thermotropic. In addition, there are
lyotropic liquid crystals that change their ...