The relationship between formation kinetics and microdroplet size of epoxy-based polymer-dispersed liquid crystals

Smith, George W.; Vaz, Nuno A.

doi:10.1080/02678298808086401

Cited by 117 publications

(41 citation statements)

References 16 publications

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“…14,15 (1) The LC within droplets and in the bulk have the same thermophysical properties. (2) The amount of LC dissolved in the polymer remains constant for LC Ն ␤ and does not contribute to the enthalpy variation ⌬H NI ( LC ).…”

Section: Polymer Glass Transition Temperature and Other Thermodynamicmentioning

confidence: 99%

Equilibrium phase diagram of polystyrene and 8CB

Benmouna

Daoudi

Roussel

et al. 1999

J. Polym. Sci. B Polym. Phys.

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Section: Polymer Glass Transition Temperature and Other Thermodynamicmentioning

confidence: 99%

Equilibrium phase diagram of polystyrene and 8CB

Benmouna

Daoudi

Roussel

et al. 1999

J. Polym. Sci. B Polym. Phys.

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“…[13][14][15][16][17] For this reason, polymer dispersed liquid crystals (PDLC) have been extensively studied as promising candidate new materials for application in the field of thermo-and electro-optical devices, such as optic shutters, smart windows, optical sensors, memories and flexible display devices. [14,[17][18][19][20][21][22][23] The ability to pattern LC nanodroplets at Communication Thermally reversible nanostructured thermosetting materials are prepared for the first time by modification of an epoxy resin with 5 wt.-% of an amphiphilic polystyrene-blockpoly(ethylene oxide) block copolymer (PSEO) and 30 wt.-% of a low-molecular-weight liquid crystal, 4 0 -(hexyl)-4-biphenylcarbonitrile (HBC). The epoxy system modified with 5 wt.-% PSEO amphiphilic copolymer self-assembles into spherical microdomains with a size distribution between 32 and 45 nm in diameter.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Thermally Reversible Nanostructured Thermosetting Materials Based on Block Copolymers Dispersed Liquid Crystal

Tercjak

Serrano

Mondragón

2007

Macromol. Rapid Commun.

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Thermally reversible nanostructured thermosetting materials are prepared for the first time by modification of an epoxy resin with 5 wt.‐% of an amphiphilic polystyrene‐block‐poly(ethylene oxide) block copolymer (PSEO) and 30 wt.‐% of a low‐molecular‐weight liquid crystal, 4′‐(hexyl)‐4‐biphenylcarbonitrile (HBC). The epoxy system modified with 5 wt.‐% PSEO amphiphilic copolymer self‐assembles into spherical microdomains with a size distribution between 32 and 45 nm in diameter. Under the same conditions, the modification of an epoxy system with 5 wt.‐% PSEO and 30 wt.‐% HBC leads to a micro‐phase separated PS‐rich domains embedded in a HBC phase. The morphology of this nanostructured thermosetting system consists in a higher amount of spherical microdomains of PSEO/HBC with the size distribution between 40 and 75 nm in diameter. This implies that the separation of the PS‐rich phase provokes the separation of the liquid crystal and allows one to obtain a novel thermally switchable smart material.magnified image

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“…This implies that LC molecules were dissolved in the polymer network and served as plasticizers. 1 When the LC content exceeded 20 wt %, LC was segregated to form droplet morphology in the PDLC film as described in the previous article. 8 In this case, the PDLC was a composite of LC droplets embedded within the polymer matrix.…”

Section: Tsc Investigationsmentioning

confidence: 99%

“…Hence, in this field the correlation between the phase separation process, LC droplet morphology, and electro-optical properties of PDLC has been the focus of studies. [1][2][3][4][5][6][7] In our previous article, 8 a novel system of LC mixed with photocurable acrylic and thermal curable epoxy was used. At first, with UV irradiation the acrylic was crosslinked.…”

Section: Introductionmentioning

confidence: 99%