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Characterization and electrical conductivity of poly(ethylene glycol)/polyacrylonitrile/multiwalled carbon nanotube composites

机译:聚乙二醇/聚丙烯腈/多壁碳纳米管复合材料的表征和电导率

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Polymer blends based on poly(ethylene glycol), polyacrylonitrile, and multiwalled carbon nanotubes (MWNTs) were prepared by the solvent cast technique from the dispersion of the MWNTs in the concentration range 0-3.45 wt %. The interaction of the MWNTs with the polymer blend was confirmed by a Fourier transform infrared (FTIR) spectroscopy study. The thermal properties of the polymer blend with the MWNTs were carried out by means of differential scanning calorimetry (DSC). It was evident from DSC that the polymer/MWNTs had a high thermal stability. Scanning electron microscopy was used to study the dispersion of the MWNTs in the polymer blend. To measure the electrical conductivity, the four-point probe method was used. The electrical conductivity showed an ionic conductivity on the order of 4.4 × 10~(-4) to 1.2 × 10 ~(-2) S/cm. Relative changes in the conductivity with the concentration and temperatures for the samples were analyzed.
机译:通过溶剂浇铸技术从MWNTs在0-3.45wt%浓度范围内的分散体中制备出基于聚乙二醇,聚丙烯腈和多壁碳纳米管(MWNTs)的聚合物共混物。 MWNT与聚合物共混物的相互作用通过傅立叶变换红外(FTIR)光谱研究证实。借助差示扫描量热法(DSC)来测定具有MWNT的聚合物共混物的热性能。从DSC可以看出,聚合物/ MWNT具有高的热稳定性。使用扫描电子显微镜研究了MWNT在聚合物共混物中的分散。为了测量电导率,使用了四点探针法。电导率显示出大约4.4×10〜(-4)至1.2×10〜(-2)S / cm的离子电导率。分析了样品中电导率随浓度和温度的相对变化。

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