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红外光谱以高选择性、无破坏性以及高超的分辨和实时跟踪能力成为从分子水平研究液晶聚合物的重要分析手段,而偏振二向色技术、时间分辨步扫描技术和二维相关分析技术的发展进一步提高了红外光谱分析复杂液晶聚合物的能力。本文介绍了传统傅里叶变换红外光谱及各种新型光谱分析技术(主要是二维相关技术)对液晶聚合物材料表征的研究进展,特别是对于液晶聚合物分子氢键、共聚和共混物相容性以及外场(温度、电场、光场、应力场)作用下液晶分子取向等的研究,并分别进行了具体的应用实例分析。
Infrared spectroscopy has become an important analytical tool for studying liquid crystal polymers at the molecular level with high selectivity, non-destructiveness and superb resolution and real-time tracking capabilities. However, polarization dichroism, time-resolved scanning and two-dimensional correlation analysis Development further enhances the ability of infrared spectroscopy to analyze complex liquid crystal polymers. This paper introduces the research progress of traditional Fourier transform infrared spectroscopy and various new spectroscopic techniques (mainly two-dimensional correlation techniques) on the characterization of liquid crystal polymer materials, especially for the hydrogen bonding, copolymerization and blends of liquid crystal polymers Compatibility and field (temperature, electric field, light field, stress field) under the action of the liquid crystal molecules orientation research, and were carried out a specific application examples.