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Impact of nanoclay on physicomechanical and thermal analysis of polyvinyl alcohol/fumed silica/clay nanocomposites

机译:纳米粘土对聚乙烯醇/气相法二氧化硅/粘土纳米复合材料物理力学和热分析的影响

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摘要

Polyvinyl alcohol (PVA)/fumed silica/clay nanocomposites are prepared via solution intercalation by exploiting phase separation based on the bridging of particles by polymer chains. PVA/fumed silica/clay nanocomposites are characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy, and thermogravimetric analysis. Mechanical properties are determined by universal testing machine. From FTIR results, it indicates that IR spectrum for PVA/fumed silica/clay nanocomposites, especially PVA/fumed silica/clay (1.30E) nanocomposites, is much broader than pure PVA and other clay nanocomposites. The better interfacial bonding between PVA/fumed silica/clay (1.30E) nanocomposites are reflected in the improvement of the mechanical properties as well as thermal stability. The surface area analysis result proves that the PVA/fumed silica/clay (1.30E) nanocomposites have higher surface area and pore volume with less pore size. With the addition of 1.30E clay to the composite system, the tensile strength and modulus had shown the highest values as well as higher activation energy for thermal decomposition. (C) 2014 Wiley Periodicals, Inc.
机译:聚乙烯醇(PVA)/气相法二氧化硅/粘土纳米复合材料是通过基于聚合物链桥接颗粒的相分离技术,通过溶液插层法制备的。 PVA /气相法二氧化硅/粘土纳米复合材料的特征在于傅立叶变换红外光谱(FTIR),扫描电子显微镜和热重分析。机械性能由万能试验机确定。从FTIR结果可以看出,PVA /气相法二氧化硅/粘土纳米复合材料,特别是PVA /气相法二氧化硅/粘土(1.30E)纳米复合材料的红外光谱比纯PVA和其他粘土纳米复合材料要宽得多。 PVA /气相法二氧化硅/粘土(1.30E)纳米复合材料之间较好的界面结合体现在机械性能和热稳定性的提高上。表面积分析结果表明,PVA /气相法二氧化硅/粘土(1.30E)纳米复合材料具有较高的表面积和孔体积,且孔径较小。在复合体系中添加1.30E粘土后,拉伸强度和模量显示出最高的值以及更高的热分解活化能。 (C)2014威利期刊公司

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