Abstract

The hystereses of volume changes in liquid single crystal elastomers (LSCEs) swollen with a low molecular weight liquid crystal (LMWLC), 5CB, are studied as a function of temperature. The swollen LSCE shows significant hystereses in the volume changes at temperatures T NI and T A during the processes on heating and on cooling, where the temperature T NI is the apparent nematic-isotropic transition for outside LMWLC and T A the nematic-isotropic transition for LMWLC inside the LSCE. No significant hysteresis at T B however can be observed which is the nematic-isotropic phase transition temperature for equilibrium shape of the swollen LSCE (networks).

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