Preparation of newly designed reverse mode polymer dispersed liquid crystals and its electro-optic characteristics

Sung Ho Hwang; Kee Jeong Yang; Sung Ho Woo; Byeong Dae Choi; Eun Hee Kim; Byeong Kyu Kim

doi:10.1080/15421400701493653

Preparation of newly designed reverse mode polymer dispersed liquid crystals and its electro-optic characteristics

Sung Ho Hwang, Kee Jeong Yang, Sung Ho Woo, Byeong Dae Choi, Eun Hee Kim, Byeong Kyu Kim

Pusan National University

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Polymer Dispersed Liquid Crystal (PDLC) films, of which the liquid crystal has negative dielectric anisotropy, were prepared from the phase separation between liquid crystal (MJ001317) and the various compositions of resins by common polymerization induced phase separation method. In this work, the effects of resin compositions have been systematically investigated. It was found that the morphology and size of droplets related to electro-optic properties mainly depend on the rate of polymerization and cross-linking density for each resin composition. A reverse mode PDLC films developed from a new formulation containing TPGDA/EHA/HMPPO showed the good off-state transmittance, contrast ratio (19:1), and relatively low driving voltage (10 V).

Original language	English
Pages (from-to)	163-171
Number of pages	9
Journal	Molecular Crystals and Liquid Crystals
Volume	470
Issue number	1
DOIs	https://doi.org/10.1080/15421400701493653
State	Published - Jan 2007

Bibliographical note

Funding Information:
This work was supported by Korean Ministry of Science and Technology (MOST) research fund.

Keywords

Electro-optic property
Polymer dispersed liquid crystal (PDLC)
Polymerization induced phase separation

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10.1080/15421400701493653

Cite this

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title = "Preparation of newly designed reverse mode polymer dispersed liquid crystals and its electro-optic characteristics",

abstract = "Polymer Dispersed Liquid Crystal (PDLC) films, of which the liquid crystal has negative dielectric anisotropy, were prepared from the phase separation between liquid crystal (MJ001317) and the various compositions of resins by common polymerization induced phase separation method. In this work, the effects of resin compositions have been systematically investigated. It was found that the morphology and size of droplets related to electro-optic properties mainly depend on the rate of polymerization and cross-linking density for each resin composition. A reverse mode PDLC films developed from a new formulation containing TPGDA/EHA/HMPPO showed the good off-state transmittance, contrast ratio (19:1), and relatively low driving voltage (10 V).",

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note = "Funding Information: This work was supported by Korean Ministry of Science and Technology (MOST) research fund.",

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doi = "10.1080/15421400701493653",

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AU - Hwang, Sung Ho

AU - Yang, Kee Jeong

AU - Woo, Sung Ho

AU - Choi, Byeong Dae

AU - Kim, Eun Hee

AU - Kim, Byeong Kyu

N1 - Funding Information: This work was supported by Korean Ministry of Science and Technology (MOST) research fund.

PY - 2007/1

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N2 - Polymer Dispersed Liquid Crystal (PDLC) films, of which the liquid crystal has negative dielectric anisotropy, were prepared from the phase separation between liquid crystal (MJ001317) and the various compositions of resins by common polymerization induced phase separation method. In this work, the effects of resin compositions have been systematically investigated. It was found that the morphology and size of droplets related to electro-optic properties mainly depend on the rate of polymerization and cross-linking density for each resin composition. A reverse mode PDLC films developed from a new formulation containing TPGDA/EHA/HMPPO showed the good off-state transmittance, contrast ratio (19:1), and relatively low driving voltage (10 V).

AB - Polymer Dispersed Liquid Crystal (PDLC) films, of which the liquid crystal has negative dielectric anisotropy, were prepared from the phase separation between liquid crystal (MJ001317) and the various compositions of resins by common polymerization induced phase separation method. In this work, the effects of resin compositions have been systematically investigated. It was found that the morphology and size of droplets related to electro-optic properties mainly depend on the rate of polymerization and cross-linking density for each resin composition. A reverse mode PDLC films developed from a new formulation containing TPGDA/EHA/HMPPO showed the good off-state transmittance, contrast ratio (19:1), and relatively low driving voltage (10 V).

KW - Electro-optic property

KW - Polymer dispersed liquid crystal (PDLC)

KW - Polymerization induced phase separation

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DO - 10.1080/15421400701493653

M3 - Article

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SN - 1542-1406

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Preparation of newly designed reverse mode polymer dispersed liquid crystals and its electro-optic characteristics

Abstract

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Keywords

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