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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Thermo-stability of acrylate based holographic polymer dispersed liquid crystal gratings
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Thermo-stability of acrylate based holographic polymer dispersed liquid crystal gratings

机译：丙烯酸酯基全息聚合物分散液晶光栅的热稳定性

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摘要

The thermo-stability of acrylate based holographic polymer dispersed liquid crystal gratings has been evaluated with regard to their morphology, diffraction efficiency, Bragg angle and electro-optical tunable performance. Our studies indicate that the thermo-stability is closely related to the chemical structure of the monomers in the grating. Usually, a more rigid molecular structure forms a more stable morphology. Another important aspect, the reaction efficiency of the system, shows that a highly efficient photoreaction leads to a dense polymer network and high ene-conversion, thus promoting the phase separation of the liquid crystal and enhancing the thermo-stability. We also find that a higher average functionality of the monomers can improve grating thermo-stability due to denser crosslinked polymers and more complete phase separation.
机译：已经评估了丙烯酸酯基全息聚合物分散液晶光栅的热稳定性，涉及其形态，衍射效率，布拉格角和电光可调性能。我们的研究表明，热稳定性与光栅中单体的化学结构密切相关。通常，更刚性的分子结构形成更稳定的形态。另一个重要方面，即系统的反应效率，表明高效的光反应导致致密的聚合物网络和高的烯转化率，从而促进了液晶的相分离并增强了热稳定性。我们还发现，由于致密的交联聚合物和更完全的相分离，单体的较高平均官能度可以改善光栅的热稳定性。

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