DESIGN OF ELECTRICAL CONDUCTIVE COMPOSITES - KEY ROLE OF THE MORPHOLOGY ON THE ELECTRICAL-PROPERTIES OF CARBON-BLACK FILLED POLYMER BLENDS
DESIGN OF ELECTRICAL CONDUCTIVE COMPOSITES - KEY ROLE OF THE MORPHOLOGY ON THE ELECTRICAL-PROPERTIES OF CARBON-BLACK FILLED POLYMER BLENDS
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DOI：
10.1021/ma00109a030
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发表时间：
1995-02-27
期刊：
影响因子：
5.5
通讯作者：
TEYSSIE, P
中科院分区：
文献类型：
--
作者：
GUBBELS, F;BLACHER, S;TEYSSIE, P
通过光学显微照片的图像分析（2-D 分析）和选择性萃取二元共混物的一相（3-D 分析），研究了炭黑 (CB) 对填充聚乙烯 (PE)/聚苯乙烯 (PS) 共混物形态的影响。填充聚合物共混物的宏观电阻率很大程度上取决于CB在一相或界面处的选择性定位，尤其取决于双重渗滤，即聚合物相的渗滤和CB颗粒的渗滤。 CB 在 PE 相中的选择性定位对聚合物共混物相形态具有显着影响。相共连续性确实在更大的成分范围内扩展，并且相形态在 200 摄氏度的热处理后稳定。在双渗透和 CB 在聚合物共混物界面选择性定位的情况下，在 CB 含量低至 0.4 wt% 时观察到电导率。
Effect of carbon black (CB) on the morphology of filled polyethylene (PE)/polystyrene (PS) blends has been investigated by image analysis of optical micrographs (2-D analysis) and by the selective extraction of one phase of the binary blends (3-D analysis). The macroscopic electrical resistivity of the filled polyblends strongly depends on the selective localization of CB in one phase or at the interface and above all on the double percolation, i.e. percolation of the polymer phases and percolation of the CB particles. The selective localization of CB in the PE phase has remarkable effects on the polyblend phase morphology. The phase cocontinuity is indeed extended over a much larger composition range, and the phase morphology is stabilized toward post-thermal treatment at 200 degrees C. In the case of double percolation and selective localization of CB at the polyblend interface, electrical conductivity is observed at a CB content as low as 0.4 wt %.