We developed novel electrically conductive nanocomposites based on cellulose nanowhiskers (CNW) via in situ emulsion polymerization reaction of pyrrole and in presence of silver nitrate (AgNO₃) as an oxidative agent and surfactant. CNW were employed as carriers comprising high surface area-to-volume ratio and high porosity. Nickel(III) oxide (Ni₂O₃) nanoparticles were loaded onto the prepared composites using the sol-gel technique to provide nanocomposites of potentially excellent properties. Different nanocomposites were prepared including polypyrrole/silver NPs (PPy/AgNPs), cellulose nanowhiskers/polypyrrole/silver nanoparticles (CNW/PPy/AgNPs), and cellulose nanowhiskers/polypyrrole/silver nanoparticles/Ni(III) oxide nanoparticles (CNW/PPy/AgNPs-Ni₂O₃). The structural, morphological, thermal and dielectric properties of the prepared nanocomposites were studied by Fourier-transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray analysis (EDX) and X-ray diffraction (XRD). The dielectric properties of the prepared nanocomposites, including dielectric constant ε΄(ω), AC conductivity, tan δ, dielectric loss ε˝(ω) and σ_ac were explored. The incorporation of PPy onto CNW composites was found to increase the electrical conductivity from 2.5 × 10⁻¹¹ to 1.1 × 10⁻⁷ S/cm. The AC conductivity was also found to increase upon increasing temperature demonstrating semiconducting activity.

我们通过吡咯的原位乳液聚合反应并在硝酸银（AgNO ₃）作为氧化剂和表面活性剂的存在下，开发了基于纤维素纳米晶须（CNW）的新型导电纳米复合材料。CNW被用作具有高表面积体积比和高孔隙率的载体。使用溶胶-凝胶技术将氧化镍（III）（Ni ₂ O ₃）纳米颗粒加载到制备的复合材料上，以提供具有潜在优异性能的纳米复合材料。制备了不同的纳米复合材料，包括聚吡咯/银纳米颗粒（PPy / AgNPs），纤维素纳米晶须/聚吡咯/银纳米颗粒（CNW / PPy / AgNPs）和纤维素纳米晶须/聚吡咯/银纳米颗粒/氧化镍（III）纳米银₂ O ₃）。通过傅立叶变换红外光谱（FT-IR），热重分析（TGA），扫描电子显微镜（SEM），透射电子显微镜（TEM），能量色散研究了制备的纳米复合材料的结构，形态，热和介电性能。X射线分析（EDX）和X射线衍射（XRD）。所制备的纳米复合材料，包括介电常数ε（ω），AC导率，黄褐色δ，介电损耗ε˝（ω）和σ的介电特性_的交流进行了探讨。发现PPy掺入CNW复合材料可使电导率从2.5×10 ^-11增加至1.1×10 ^-7  S / cm。还发现，随着温度的升高，交流电导率也增加，这表明其半导体活性。