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HomeKey Engineering MaterialsKey Engineering Materials Vol. 840Acetone Sensing Based on Transmittance of...

Acetone Sensing Based on Transmittance of Hydroxyethyl Methacrylate-Liquid Crystal Materials

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Abstract:

Poly hydroxyethyl methacrylate (p-HEMA) has a natural property that is very easy to absorb a liquid or solution and become a hydrogel when absorbing water. In this work, by combining p-HEMA material with a cholesteric liquid crystal (CLC), the material can absorb the solution and the optical properties of the liquid crystal will change depending on the solution it absorbs. The solution used in this work is acetone. During the absorption process the p-HEMA material expanded so that the orientation direction of liquid crystal molecular twist with a helical axis along can freely move and change. In this work, we observed the study of transmittance caused by thickness effect and the mixture concentration effect of the poly hydroxyethyl methacrylate liquid crystals (PHM-LC).

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Symposium of Materials Science and Chemistry II

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Periodical:

Key Engineering Materials (Volume 840)

Pages:

424-429

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.840.424

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Online since:

April 2020

Authors:

Harry Miyosi Silalahi*, Wei Fan Chiang, Chia Yi Huang

Keywords:

Acetone, Liquid Crystal, P-HEMA

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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