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首页> 外文期刊>Journal of nano research >Characterization of Polystyrene Nanocomposites Containing Nanoparticles of Pseudoboehmite Obtained by Sol-Gel Process
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Characterization of Polystyrene Nanocomposites Containing Nanoparticles of Pseudoboehmite Obtained by Sol-Gel Process

机译：溶胶-凝胶法制备的含假勃姆石纳米颗粒的聚苯乙烯纳米复合材料的表征

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Polymeric nanocomposites are hybrid materials in which inorganic substances of nanometric dimensions are dispersed in a polymeric matrix. These inorganic substances have high surface area allowing a better interaction with the polymeric matrix and consequently promote changes in the physical properties of the final composite with small additions of the same. The preparation of nanocomposites with polymer matrix allows in many cases to find a relationship between a low cost due to the use of lower amount of charge, reaching high level of performance. In this work, it was obtained polystyrene nanocomposites with pseudoboehmite synthesized by the solgel process with different concentrations of pseudoboehmite using and not using octadecylamine as a coupling agent. The nanocomposites were prepared by the melt intercalation technique. The pseudoboehmite nanoparticles were characterized by X-ray diffraction, scanning electron microscopy, differential thermal analysis and thermo gravimetric analysis. The nanocomposites were characterized by differential thermal analysis, thermogravimetric analysis, heat deflection temperature, Vicat softening point, mechanical and rheological tests. The results showed an increase in the thermal properties, hardness and tensile strength values and decrease in the melt index, impact resistance and tensile elongation, showing the interaction of the filler with the polymer matrix. Although in the samples with the presence of octadecylamine the data shows that the thermomechanical properties practically do not vary in relation with the samples without octadecylamine.
机译：聚合物纳米复合材料是杂化材料，其中纳米尺寸的无机物质分散在聚合物基质中。这些无机物质具有高的表面积，允许与聚合物基体更好地相互作用，并因此在少量添加的情况下促进了最终复合材料的物理性质的变化。具有聚合物基质的纳米复合材料的制备在许多情况下允许发现由于使用较少量的电荷而在低成本与达到高性能水平之间的关系。在该工作中，使用和不使用十八烷基胺作为偶联剂，获得了通过溶胶凝胶法合成的具有不同浓度的假勃姆石的假勃姆石的聚苯乙烯纳米复合材料。通过熔融插层技术制备了纳米复合材料。假勃姆石纳米颗粒通过X射线衍射，扫描电子显微镜，差热分析和热重分析进行了表征。通过差热分析，热重分析，热变形温度，维卡软化点，力学和流变学测试对纳米复合材料进行了表征。结果表明，热性能，硬度和拉伸强度值增加，而熔体指数，抗冲击性和拉伸伸长率降低，表明填料与聚合物基质的相互作用。尽管在有十八烷基胺存在的样品中，数据表明热机械性能实际上与没有十八烷基胺的样品有关。

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