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Synthesis and properties of cholesteric liquid crystalline elastomers

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Abstract

The synthesis of new side-chain cholesteric liquid crystalline elastomers, containing the flexible non-mesogenic crosslinking agent M-1 and the cholesteric monomer M-2, is described by a one-step hydrosilication reaction. The chemical structures of the monomers and network polymers obtained were confirmed by FT-IR spectroscopy. Their mesogenic properties and phase behavior were investigated by differential scanning calorimetry, polarizing optical microscopy, and x-ray diffraction measurements. The influence of the crosslinking units on the phase behavior is discussed. The network polymers showed elasticity, reversible phase transitions, and cholesteric Grandjean texture. The experimental results demonstrated that the glass transition temperatures and isotropization temperatures of network elastomers decreased as the concentration of crosslinking units was increased, but the cholesteric phase was not disturbed.

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Acknowledgements

The authors thank the National Natural Science Fundamental Committee of China, as well as the National Basic Research Priorities Programme (973) of China and the Ministry of Education of China for providing financial support of this work.

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Authors and Affiliations

  1. The Center for Molecular Science and Engineering, Northeastern University, 110004, Shenyang, People’s Republic of China

    Ying-Gang Jia, Bao-Yan Zhang & Qiu-Ju Sun

  2. Resin Institute of Technique Center, Huajin Group, 124021, Panjin, People’s Republic of China

    He-Xin Chang

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  1. Ying-Gang Jia
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  2. Bao-Yan Zhang
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  3. Qiu-Ju Sun
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  4. He-Xin Chang
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Correspondence to Bao-Yan Zhang.

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Jia, YG., Zhang, BY., Sun, QJ. et al. Synthesis and properties of cholesteric liquid crystalline elastomers. Colloid Polym Sci 282, 1077–1082 (2004). https://doi.org/10.1007/s00396-003-1035-6

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  • DOI: https://doi.org/10.1007/s00396-003-1035-6

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