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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Nanocomposite films dispersed with silica nanoparticles extracted from earthworm humus
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Nanocomposite films dispersed with silica nanoparticles extracted from earthworm humus

机译：纳米复合膜，分散有从earth腐质中提取的二氧化硅纳米颗粒

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摘要

Research in the field of polymer electrolytes in recent years has been focused in achieving maximum conductivity at ambient conditions. Addition of ceramic nanoparticles to polymer matrices has been found to be an effective way to realize large ionic conductivity. A cost effective method of extracting silica nanoparticles from earthworm humus has been reported. To prepare polymer electrolyte films of PVA-PVP blend in 50:50 ratio by weight was taken as the polymer matrix and orthophosphoric acid (H _3PO _4) was added to the polymer blend solution. Nanocomposite polymer electrolytes were prepared by adding known amounts of SiO _2 nanoparticles to polymer electrolyte solution. XRD scans of the polymer electrolyte films reveal a well dispersed state of the nanoparticles in the polymer matrix. DSC studies have shown a reduction in Tg of the polymer electrolytes with addition of SiO _2 nanoparticles. The highest conductivity has been found to be 2.4 × 0 ~(- 4) S/cm at 2 wt.% silica doping at room temperature. Transference number measurements have shown that the conductivity of the samples is mainly dominated by the motion of the ions.
机译：近年来，聚合物电解质领域的研究集中于在环境条件下实现最大电导率。已经发现将陶瓷纳米颗粒添加到聚合物基质中是实现大离子电导率的有效方法。从from腐质中提取二氧化硅纳米颗粒的一种经济有效的方法已有报道。为了制备以50:50的重量比的PVA-PVP共混物的聚合物电解质膜作为聚合物基质，并将正磷酸（H_3PO_4）加入到聚合物共混物溶液中。通过将已知量的SiO _2纳米颗粒添加到聚合物电解质溶液中来制备纳米复合聚合物电解质。聚合物电解质膜的XRD扫描显示了纳米颗粒在聚合物基质中的良好分散状态。 DSC研究表明，通过添加SiO _2纳米粒子，聚合物电解质的Tg降低。已经发现，在室温下以2重量％的二氧化硅掺杂时，最高的电导率为2.4×0〜（-4）S / cm。转移数测量表明，样品的电导率主要由离子的运动决定。

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