29743-21-3Relevant academic research and scientific papers
SPECIFIC VOLUME STUDIES IN NEMATIC, SMECTIC-A AND SMECTIC-C PHASES OF TBBA.
Rao,Pisipati
, p. 301 - 306 (1984)
The specific volume, v, of Terephthalyiidene-bis-p-n-butylaniline (TBBA) is measured as a function of temperature from the nematic phase to the smectic C phase. The compound exhibits nematic, smectic A, smectic C, smectic G and smectic H phases. The changes in specific volume across the nematic to smectic A and smectic A to smectic C phase transformations and the calculated thermal expansion coefficients confirm the order of the N-S//A transition as first order and S//A-S//C transition as second order. The volume jump across the N-S//A transition is 0. 16%.
DCS STUDY OF SMECTIC PHASE TRANSITIONS.
Navard,Cox
, p. 265 - 269 (1984)
A previously described technique for measuring the order of phase transitions **1// minus **3 using DSC has been applied to the liquid crystalline transitions found in TBBA. All of the values obtained were in agreement with those that have been measured by other techniques, and also with what would be anticipated from the nature of the transition. This study has shown that the technique is applicable to smectic-smectic transitions in liquid crystals.
