Electrical and mechanical properties of partially bio-based PP/PBS blends nanocomposites elaborated by twin-screw extrusion,Journal of Applied Polymer Science

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Electrical and mechanical properties of partially bio-based PP/PBS blends nanocomposites elaborated by twin-screw extrusion
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2021-07-19 , DOI: 10.1002/app.51401
Mouhja Bencharki ₁ , Sébastien Rondot ₁ , Ahmed Tara ₁ , Omar Jbara ₁ , Françoise Berzin ₂

Affiliation

Organically modified montmorillonite (OMMT, Cloisite 20) was used as reinforcing filler to prepare nanocomposites from a blend of polypropylene (PP) and eco-friendly degradable polybutylene succinate (PBS). A PP grafted with maleic anhydride was also added as a compatibilizer. Scanning electron microscopy observations indicated that the blend morphology was affected by the presence of OMMT, which acted as a compatibilizer between PP and PBS. Rheological measurements showed a significant increase of the complex viscosity when OMMT was added above a certain amount. X-ray diffraction indicated an intercalated structure for all nanocomposites. The addition of OMMT improved mechanical properties of neat matrices and blends. The electrical insulation properties were preserved for low concentrations of OMMT, up to 2 wt%. Then, to guarantee good mechanical properties without deteriorating electrical ones, while maintaining a sufficient bio-based composition, the 70/30 (PP/PBS) blend with clay concentrations of less than 2 wt% appeared to be the most satisfactory nanocomposite for applications in the field of electrical insulation.

中文翻译：

双螺杆挤出制备的部分生物基 PP/PBS 混合纳米复合材料的电气和机械性能

有机改性蒙脱石（OMMT，Cloisite 20）用作增强填料，由聚丙烯（PP）和环保可降解聚丁二酸丁二醇酯（PBS）的混合物制备纳米复合材料。还添加了接枝有马来酸酐的 PP 作为增容剂。扫描电子显微镜观察表明共混物形态受 OMMT 存在的影响，OMMT 作为 PP 和 PBS 之间的增容剂。流变学测量表明，当添加 OMMT 超过一定量时，复数粘度显着增加。X 射线衍射表明所有纳米复合材料都具有嵌入结构。添加 OMMT 改善了纯基质和混合物的机械性能。对于低浓度的 OMMT，高达 2 wt%，电绝缘性能得以保持。然后，

更新日期：2021-09-09

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