Department of Solid State, Physics Division, National Research Centre, 33 El Bohouth st. (former El tahrir st.), P.O. 12622, Dokki, Giza, Egypt.
Chemical Industrial Research Division, National Research Centre, 33 El Bohouth st. (former El tahrir st.), P.O. 12622, Dokki, Giza, Egypt.
Carbohydr Polym. 2017 Jul 15;168:182-190. doi: 10.1016/j.carbpol.2017.03.066. Epub 2017 Mar 21.
Cellulose/polypyrrole and cellulose/polypyrrole-TiO composites were prepared via in situ oxidative chemical polymerization of pyrrole using FeCl as oxidant. The concentration effect of pyrrole on the structure and properties of prepared matrix has been investigated. Furthermore, the structure of the prepared materials was characterized using Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), X-ray Diffraction (XRD), and Thermal gravimetrical analysis (TGA). The results exhibited that the addition of cellulose and TiO increase the thermal stability of the polypyrrole system. Moreover, dielectric properties of the obtained composites were studied over frequency range from 42Hz to 5MHz. The electrical measurements including dielectric constant, ε'(ω), dielectric loss, ε''(ω), loss tangent, tan δ and ac conductivity, σac were carried.
通过使用 FeCl 作为氧化剂，通过原位氧化化学聚合吡咯制备了纤维素/聚吡咯和纤维素/聚吡咯-TiO 复合材料。研究了吡咯的浓度对制备的基体的结构和性能的影响。此外，使用傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）、X 射线衍射（XRD）和热重分析（TGA）对制备的材料的结构进行了表征。结果表明，纤维素和 TiO 的添加提高了聚吡咯体系的热稳定性。此外，还研究了复合材料在 42Hz 至 5MHz 的频率范围内的介电性能。进行了包括介电常数 ε'（ω）、介电损耗 ε''（ω）、损耗角正切 tan δ 和交流电导率 σac 在内的电测量。
