High‐dielectric constant (high‐K) polymer nanocomposites based on nematic liquid crystals and CaCu₃Ti₄O₁₂ (CCTO) nanoparticles have been prepared. The host matrix is polymer dispersed liquid crystals (PDLC) in which LC (E7) droplets are dispersed in different polymer blends ratios of poly vinyl chloride/poly aniline (PVC/PANI). The PDLC (PVC/PANI/E7) in the appropriated ratios; (90/10/5), (75/25/5), and (50/50/5) were composited with 10 wt% CCTO nanoparticles. The IR spectra recorded for the PDLC nanocomposites present a spectrum similar to that of pure PDLC but with a slight shift of the peak positions. The addition of PANI and CCTO to PDLC enhances the thermal stability of the nanocomposites. SEM demonstrates agglomerates of CCTO dispersed in the polymer textures. Moreover, the addition of E7 facilitates the integration of PANI in PDLC matrix. The broadband dielectric spectrum shows high‐frequency relaxation in addition to low‐frequency interfacial polarization (Maxwell‐Wagner type polarization). Besides, ε′ at 50 Hz is in the order of 10⁵ for PDLC/CCTO (50/50/5/10) nanocomposite. In addition, the computed energy density is found to be 74.66 J/cm³. This presumed ratio could be accentuated as a potential candidate for energy storage application with respect to the considerations of device fabrications.

中文翻译：

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聚合物/液晶纳米复合材料，用于储能应用

基于向列型液晶和CaCu ₃ Ti ₄ O _12的高介电常数（高K）聚合物纳米复合材料（CCTO）纳米粒子已制备。主体基质是聚合物分散的液晶（PDLC），其中LC（E7）小滴分散在聚氯乙烯/聚苯胺（PVC / PANI）的不同聚合物混合比中。适当比例的PDLC（PVC / PANI / E7）；将（90/10/5），（75/25/5）和（50/50/5）与10 wt％的CCTO纳米颗粒复合。为PDLC纳米复合材料记录的IR光谱具有与纯PDLC相似的光谱，但峰位置略有偏移。将PANI和CCTO添加到PDLC中可增强纳米复合材料的热稳定性。SEM显示了CCTO的团聚体分散在聚合物织构中。此外，添加E7有助于将PANI集成到PDLC矩阵中。除了低频界面极化（Maxwell-Wagner型极化）以外，宽带介电谱还显示出高频弛豫。此外，50 Hz时的ε'约为10⁵为PDLC / CCTO（50/50/5/10）纳米复合物。另外，发现计算出的能量密度为74.66J / cm ³。相对于器件制造的考虑，该假定比率可以被强调为能量存储应用的潜在候选者。