Preparation of polymer/clay nanocomposites via melt intercalation under continuous elongation flow
| Autor: | Wangyang Lin, Jinping Qu, Xiaochun Yin, Ting Wu, Rongyuan Chen, Zhao-Xia Huang, Yongbin Tan, Guizhen Zhang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Polypropylene
chemistry.chemical_classification Thermogravimetric analysis Materials science Nanocomposite Intercalation (chemistry) General Engineering 02 engineering and technology Polymer engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Exfoliation joint 0104 chemical sciences Polymer clay chemistry.chemical_compound Montmorillonite chemistry Ceramics and Composites engineering Composite material 0210 nano-technology |
| Zdroj: | Composites Science and Technology. 145:157-164 |
| ISSN: | 0266-3538 |
| DOI: | 10.1016/j.compscitech.2017.04.005 |
| Popis: | Polymer/clay nanocomposites exhibit desirable performance and multifunctional properties. The ideal dispersion and exfoliation of clay layers in polymeric matrixes is a significant drawback that affects its application. In this study, a novel extruder generating a continuous elongation flow was used to fabricate the representative polypropylene (PP)/organic montmorillonite (OMMT) nanocomposites and then compare with the twin-screw extruder (TSE). Phase morphology, dynamic rheological properties, and mechanical properties were characterized by thermal gravimetric analysis, wide-angle X-ray diffraction, transmission electron microscopy, rotational rheometer and impact tests. The morphology and rheological behavior of the nanocomposites evidenced that ideal intercalation or/and exfoliation dispersion of OMMT in PP matrixes can be achieved under continuous elongation flow. Thus, the double-side exfoliation of the OMMT platelets combined with the pulling/diffusion process under an elongation flow is leading to an effective strengthening and toughening of PP better than that in the TSE. |
| Databáze: | OpenAIRE |
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