Dynamic Analysis of Polymer-Dispersed Liquid Crystal by Infrared Spectroscopy

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The dynamic behavior of a polymer-dispersed liquid crystal (PDLC) under an electric field has been studied by static and two-dimensional infrared spectroscopy. The PDLC sample was prepared by polymerization-induced phase separation of a mixture of nematic liquid crystal E7 and acrylate. 2D IR correlation analysis indicates that the rigid core of the liquid crystal molecules reorients as a unit, and suggests that the polymer side chain existing in the interface between the polymer and the liquid crystals may reorient in phase with the liquid crystal reorientation by interaction with the liquid crystal molecules.

Keywords: Dynamic analysis; FT-IR; Infrared spectroscopy; Liquid crystal; Polymer-dispersed liquid crystal; Two-dimensional analysis

Document Type: Invited Paper

DOI: http://dx.doi.org/10.1366/0003702934067441

Affiliations: 1: Materials and Devices Research Laboratory IV, Research and Development Center, Toshiba Corporation, 33, Shin-isogo-chou, Isogo-ku, Yokohama, 235, Japan 2: Environmental Engineering Laboratory, Research and Development Center, Toshiba Corporation, Komukai Toshiba-cho, Saiwai-ku, Kawasaki, 210, Japan

Publication date: September 1, 1993

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