Glass transition and crystallization of ODIC phase in nematic liquid crystal
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- Rozwadowski Tomasz
- University of Tsukuba Institute of Nuclear Physics, Polish Academy of Sciences
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- Jasiurkowska-Delaporte Malgorzata
- Institute of Nuclear Physics, Polish Academy of Sciences
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- Massalska-Arodz Maria
- Institute of Nuclear Physics, Polish Academy of Sciences
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- Hishida Mafumi
- University of Tsukuba
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- Yamamura Yasuhisa
- University of Tsukuba
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- Saito Kazuya
- University of Tsukuba
Abstract
<p>Molecular dynamics of 4-(2,3-difluoro)-pentylphenyl-trans-4-(2,3-difluoro)- pentylcyclohexyl benzoate liquid crystalline material was investigated by using broadband dielectric spectroscopy (BDS) at temperature range 173 – 410 K and frequency range 10-1-107 Hz. In the same temperature region, calorimetric measurements using by differential scanning calorimetry (DSC) and polarized optical microscopy (POM) observations were carried out. The investigated substance shows isotropic and nematic liquid phases. Melt and cold crystallization of two disordered crystals (ODIC) were observed. Additionally, glass transition of ODIC crystalline phase was found. Solidification processes were described at various cooling and heating rates in both thermodynamic and dynamic ways.</p>
Journal
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- Proceedings of Japanese Liquid Crystal Society Annual meeting
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Proceedings of Japanese Liquid Crystal Society Annual meeting 2019 (0), 3B05-, 2019
THE JAPANESE LIQUID CRYSTAL SOCIETY
