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首页> 外文期刊>Polymers for advanced technologies >Poly(propylene)/montmorillonite/polypyrrole composites: structure and conductivity
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Poly(propylene)/montmorillonite/polypyrrole composites: structure and conductivity

机译：聚丙烯/蒙脱土/聚吡咯复合材料：结构和导电性

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摘要

Poly(propylene)/montmorillonite/polypyrrole (PP/MMT/PPy) composites were prepared by oxidative polymerization of pyrrole in the presence of dispersed poly(propylene) (PP) and montmorillonite (MMT) particles in aqueous solution of an anionic surfactant, dodecylbenzenesulfonic acid (DBSA), or in water/methanol solution. During the oxidative polymerization of pyrrole the exfoliated MMT rearranges to multilayered MMT intercalated with polypyrrole (PPy). The degree of intercalation depends on the charge compensation of the negatively charged MMT-layers. Favored interlayer distances have been detected by wide angle X-ray scattering, which are independent of the amount of PPy formed in the system. Excess PPy is located at the surface of the multilayered structures of MMT as well as at the surface of the PP particles present. The composites were processed to flat sheets. Morphology and, therefore, electrical conductivity strongly depend on the type of processing, but also on the amount of conducting PPy present in the composite and on the reaction medium used for PPy synthesis. Higher conductivities and improved stability against shear are observed when MMT is present in the composite samples compared to samples devoid of MMT.
机译：聚丙烯/蒙脱土/聚吡咯（PP / MMT / PPy）复合材料是在分散的聚丙烯（PP）和蒙脱土（MMT）颗粒在阴离子表面活性剂十二烷基苯磺酸盐水溶液中的存在下，通过吡咯的氧化聚合反应制得的。酸（DBSA）或在水/甲醇溶液中。在吡咯的氧化聚合过程中，剥落的MMT重排为插入有聚吡咯（PPy）的多层MMT。插入的程度取决于带负电的MMT层的电荷补偿。已通过广角X射线散射检测到了有利的层间距离，该距离与系统中形成的PPy的量无关。过量的PPy位于MMT的多层结构的表面以及存在的PP颗粒的表面。将复合材料加工成平板。形态和因此的电导率在很大程度上取决于加工的类型，还取决于复合物中存在的导电PPy的量以及用于PPy合成的反应介质。当复合材料样品中存在MMT时，与不含MMT的样品相比，具有更高的电导率和更高的抗剪切稳定性。

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