When cooling a smectic, LC is rather frequent the formation of a paramorphotic solid observable with a polarizing light microscope. How does it behave on heating (eg, fusion temperature, enthalpy, etc)?
If you deal with a mixture, it might be that some components crystallize out of it (phase separate), then their behavior upon heating would depend on which component is that.
Thank you very much, Prof Oleg. Your answer was very useful and helped us to understand a premelting endoexo effect thar we have found in the copper/(II) alkanoate series. This effect appears only in samples quenched from a hexagonal columnar disccotic phase. Now we know that in the quenched crystalline phase (monoclinic) there are traces of a new polymorph (in which the alkyl chain are interdigitated, wich resambles the hexagonal mesophase structure. The difference between them is de interdigitated chains in the crystal traces thar are "melted" in the mesophase. These traces are the responsable of the endoexo effect. Thanks again.
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