Synthesis and Phase Behavior of Chiral Liquid Crystal Elastomers Containing Cholesteryl Group

Ying Gang Jia; Kun Ming Song; Bao Yan Zhang

doi:10.4028/www.scientific.net/AMR.554-556.807

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 554-556Synthesis and Phase Behavior of Chiral Liquid...

Synthesis and Phase Behavior of Chiral Liquid Crystal Elastomers Containing Cholesteryl Group

Abstract:

The synthesis of new side chain cholesteric liquid crystalline elastomers (ChLCEs) containing the cholesteric monomer M and the flexible non-mesogenic crosslinking agent C, is described. The selective reflection of light for M was characterized with UV/Visible/NIR. The phase behavior and mesomorphism were investigated by differential scanning calorimetry (DSC), polarizing optical microscopy (POM), and X-ray diffraction (XRD). The effect of the content of crosslinking units on the phase behavior and mesomorphism of elastomers P₁ – P₈ is discussed. The ChLCEs exhibit elasticity, reversible phase transitions, and cholesteric Grandjean texture. The experimental results demonstrate that the glass transition temperature and isotropic temperature of ChLCEs decrease with increasing the content of crosslinking unit, but the cholesteric phase is not disturbed.

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Advanced Materials Research (Volumes 554-556)

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807-810

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https://doi.org/10.4028/www.scientific.net/AMR.554-556.807

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July 2012

Authors:

Ying Gang Jia, Kun Ming Song, Bao Yan Zhang

Keywords:

Chiral, Elastomer, Liquid Crystal, Phase Behavior, Synthesis

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