Polymer-dispersed liquid crystal based on E7: Morphology and characterization

Polymer-dispersed liquid crystals (PDLCs) are liquid crystal dispersions within a polymer matrix. PDLCs have attracted the interest of researchers for their applications as light shutters, smart windows, and active displays. Herein, we report on the preparation and characterization of PDLCs by a combination of two types of induced phase separation. Experimental results show the nucleation and growth of the E7 liquid crystal droplets from poly(styrene), poly(methylmethacrylate) or poly(dimethylsiloxane) which are used as a polymeric matrix. The time evolution of liquid crystal droplets in terms of liquid crystal domain diameter was quantified. PDLCs were characterized by Fourier transform infrared spectroscopy and Raman spectroscopy.