Studies on physico-mechanical properties and thermal characteristics of polypropylene/layered silicate nanocomposites
Studies on physico-mechanical properties and thermal characteristics of polypropylene/layered silicate nanocomposites
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DOI：
10.1002/pc.20059
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发表时间：
2004-12-01
影响因子：
5.2
通讯作者：
Tripathy, SS
中科院分区：
文献类型：
--
作者：
Parija, S;Nayak, SK;Tripathy, SS
聚丙烯/层状硅酸盐纳米复合材料由基础聚合物（10 MFI）和十八胺改性的蒙脱土（1.30P nanomer）制备，在有和没有相容剂的情况下熔融共混，马来酸酐接枝聚丙烯（Epolene-G3015）。研究并比较了不同纳米单体含量和增容剂用量的纯PP和纳米复合材料的物理机械性能。纳米复合材料的热特性进行了比较与那些原始的聚合物。对纳米复合材料进行TEM分析以研究纳米单体在所得杂化物中的分散。纳米复合材料显示出比原始聚合物的机械性能有所改善，比重略有增加。相容剂的加入使粘土与基体聚合物界面相容，进一步提高了纳米复合材料的力学性能。未增容的纳米复合材料显示出热稳定性的增加和更高的熔点。然而，相容的纳米复合材料表现出延迟结晶，由于存在的低聚部分的添加的Epolene。(C)2004年塑料工程师学会。
Polypropylene/layered silicate nanocomposites were prepared from base polymer (10 MFI) and octadecylamine modified montmorillonite (1.30P nanomer), melt compounded with and without compatibilizer, i.e., maleic anhydride grafted polypropylene (Epolene-G3015). Physico-mechanical properties of the virgin PP and nanocomposites with different nanomer percentages and compatibilizer loadings were studied and compared. Thermal characteristics of nanocomposites were also compared with those of the virgin polymer. TEM analysis of the nanocomposites was carried out to study the dispersion of nanomer in the resulting hybrids. The nanocomposites showed improved mechanical properties over those of the virgin polymer with a marginal increase in specific gravity. Addition of compatibilizer further enhanced the mechanical properties of nanocomposites because of the compatibilization of the clay and host polymer interface. The uncompatibilized nanocomposites showed an increase in thermal stability and a higher melting point. However, the compatibilized nanocomposites showed delayed crystallization due to the presence of an oligomeric fraction of the added Epolene. (C) 2004 Society of Plastics Engineers.