Abstract
ABSTRACT Polymer-dispersed liquid crystal (PDLC) is a striking material that has a great role in optoelectronic display devices. In this paper, PDLC films were prepared by the polymerisation-induced phase separation (PIPS) process under the same curing temperature, UV intensity, and photo-initiator dosage. The morphology and electro-optical properties of PDLC with crosslinker content, the liquid crystal content, and magnetic nanomaterial doping were comprehensively investigated. Different crosslinker and liquid crystal contents changed the crosslinker degree and free radical content in the blends, which changed the polymer network size while changing the electro-optical properties of PDLC. The magnetic nanomaterials dispersed in PDLC established the intrinsic potential and reduced the threshold voltage (24.1 V) and saturation voltage (54.5 V) were obtained at a Fe3O4 NPs doping concentration of 1.0 wt%, which led to a CR of 89.9 and a toff of 14.1 ms. This work provides a feasible method to optimise the electro-optical properties of PDLC and provides the possibility for the wide application of PDLC.
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