Biodegradable poly(propylene carbonate)/montmorillonite nanocomposites prepared by direct melt intercalation
Biodegradable poly(propylene carbonate)/montmorillonite nanocomposites prepared by direct melt intercalation
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DOI：
10.1016/j.materresbull.2005.08.019
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发表时间：
2006-02
影响因子：
5.4
通讯作者：
Jingwen Xu;R. Li;Y. Meng;Y. Mai
中科院分区：
文献类型：
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作者：
Jingwen Xu;R. Li;Y. Meng;Y. Mai
以有机蒙脱土（OMMT）和聚碳酸亚丙酯（PPC）为原料，采用熔融共混法制备了插层-剥离型纳米复合材料。使用广角X射线散射和透射电子显微镜技术验证了PPC基质内的OMMT层的纳米级分散。静态机械性能通过使用拉伸试验机测定。与纯PPC和由未改性的MMT制备的复合材料相比，具有较低OMMT含量的PPC/OMMT纳米复合材料的热分解温度显示出增加。动态力学分析表明，纳米OMMT在PPC基体中分散良好，提高了复合材料的储能模量。
Intercalation-exfoliated nanocomposites derived from poly(propylene carbonate) (PPC) and organo-modified montmorillonite (OMMT) were prepared by direct melt blending in an internal mixer. The nano-scale dispersion of the OMMT layers within the PPC matrix was verified using wide angle X-ray scattering and transmission electron microscopy technologies. Static mechanical properties were determined by using a tensile tester. The PPC/OMMT nanocomposites with lower OMMT content showed an increase in thermal decomposition temperature when compared with both pure PPC and the composites prepared from un-modified MMT. Dynamic mechanical analysis indicated that nano-scale OMMT dispersed well within PPC matrix and therefore enhanced the storage modulus of the composites.