Patrick Beyer, Rudolf Zentel1
1Institute of Organic Chemistry, University of Mainz, Duesbergweg 10-14, 55099 Mainz, Germany
JUnQ, 4, 1, Article, 1-4, 2014 (Received 14.06.2013, accepted 25.07.2013, published online 28.08.2013)
Liquid crystalline (LC) elastomers are well known for their reversible shape variation at the phase transition from the LC to the isotropic phase. We managed to prepare an oriented smectic monodomain of a crosslinked LC-polysiloxane, which showed – contrary to the expectations – NO shape variation at all. This observation is in agreement with mechanical measurements on small LC-elastomer balloons made from the same materials. It is completely unknown, why this type of “diluted” LC-polysiloxane (only about 25% of the repeating units are functionalized with mesogens) behaves like this.