Polymerization induced phase separation (PIPS) in a polymer dispersed liquid crystal (PDLC) system: A Monte-Carlo simulation approach

Highly stretchable polymer-dispersed liquid crystal-based smart windows with transparent and stretchable hybrid electrodes

“…To polymerize the polymer precursor of the PDLC solution, the bar-coated fluid homogeneous mixture in PDLC solution was irradiated with UV light (wavelength = 365 nm). 23 Ahmad et al , reported that PDLC-based smart windows have high on-state transmittance and contrast ratios (CR: the ratio of off transmittance and on transmittance of the PDLC smart window) under low UV intensity and long curing times. 31 Therefore, we optimized curing time and UV intensity based on the optical transmittance of the PDLC-based smart window with the Ag NW/PEDOT:PSS hybrid TSEs.…”

“…Aer coating of PDLC solution, the other side of the transparent PU substrate coated with the same TSE was placed to form a shied sandwich, and then both hybrid TSEs were bonded by irradiating with ultraviolet (UV) light having a center wavelength of 365 nm using polymerization induced phase separation (PIPS) method. 23 The uid homogeneous mixture in PDLC solution was originally transparent, but it turned into an opaque layer when cured with 365 nm UV light under conditions of 0.5 mW cm À2 and 30 minutes. The center and right-side images in Fig.…”

Effect of Noncovalent Interaction of a Polymer-Dispersed Liquid Crystal for Interferometric Applications over a Range of Low Frequencies

“…The PDLC prototype consisting of a 70 wt % E7 liquid crystal mixture (from Merck, k 11 /k 33 = 1.54, k 22 /k 11 = 0.93, λ 0 = 435 nm, n e = 1.8208, n o = 1.544) and 30 wt % of UV curable epoxy resin (UV5520-ZE from Eternal Chemical, Taiwan) was prepared by a polymerization induced phase separation (PIPS) technique and followed by heating at the temperature (70 °C) higher than the isotropic temperature of LC. 46 The ultrasonic bench is applied to the mixture for degassing of the composite. This mixture was finally filled into the PDLC cell by a capillary method, which was already kept at 70 °C.…”

Dynamics of spinodal decomposition coupled with chemical reaction in thermosetting phenol-formaldehyde resin-based solutions and its application in monolithic porous materials

“…When the spinodal line surpasses the curing point, the single-phase system is then thrust into the unstable region and the phase separation occurs by spinodal decomposition. [11][12][13][14][15][16] Using the Monte Carlo algorithm, Jin et al 11 simulated the RIPS process in polymer-dispersed liquid crystals (PDLCs) and found that the size of liquid crystalline droplet can be controlled by modulating the position of curing point, polymerization reactivity and curing time. This technique is oen utilized to synthesize monolithic porous polymers and carbons due to its simple, environmentally benign and cost-effective characteristics.…”

“…So far, several researches have studied theoretically or experimentally the RISD dynamics in polymer solutions and blends. [11][12][13][14][15][16] Using the Monte Carlo algorithm, Jin et al 11 simulated the RIPS process in polymer-dispersed liquid crystals (PDLCs) and found that the size of liquid crystalline droplet can be controlled by modulating the position of curing point, polymerization reactivity and curing time. Chan and Rey 12,13 also studied numerically the effect of scaled diffusion coefficient and rate constant on the morphology evolution of PDLCs, where initial composition and curing temperature were kept as an invariable.…”