Thermal expansion coefficient and volume changes accompanying phase transitions of p-alkyl-p' -cyano-cyclohexyl-cyclohexanes have been determined by a fast scanning dilatometric method. A relation between the percentage changes of volume and the phase involved in the transition is given. A comparison with calorimetric data is al so reported. The results confirm that the stability of the smectic phase B for these compounds is enhanced with decreasing molecular length
SCANNING DILATOMETRY AND CALORIMETRY OF PARA-ALKYL-PARA'-CYANO-CYCLOHEXYL-CYCLOHEXANES
CASTELLI, Francesco
1989-01-01
Abstract
Thermal expansion coefficient and volume changes accompanying phase transitions of p-alkyl-p' -cyano-cyclohexyl-cyclohexanes have been determined by a fast scanning dilatometric method. A relation between the percentage changes of volume and the phase involved in the transition is given. A comparison with calorimetric data is al so reported. The results confirm that the stability of the smectic phase B for these compounds is enhanced with decreasing molecular lengthFile in questo prodotto:
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