The influence of carbon nanotube functionalization route on the efficiency of dispersion in polypropylene by twin-screw extrusion |
| |
| Authors: | Rui M Novais Frank Simon Maria C Paiva José A Covas |
| |
| Affiliation: | 1. Institute for Polymers and Composites/I3N, University of Minho, 4800-058 Guimarães, Portugal;2. Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, D-01069 Dresden, Germany;1. Key Laboratory of Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou 510640, China;2. Zhuzhou Times New Material Technology Co., LTD, Zhuzhou 412007, China;1. Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Eunha-ri San 101, Bongdong-eup, Wanju-gun, Jeollabukdo 565-905, Republic of Korea;2. Research Institute of Advanced Materials (RIAM), Department of Materials Science and Engineering, Seoul National University, Daehak-Dong, Gwanak-Gu, Seoul 151-744, Republic of Korea;1. Polymer Engineering Department, Fraunhofer Institut für Chemische Technologie (ICT), Joseph-von-Fraunhofer-Straße 7, Pfinztal 76327, Germany;2. Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK), Campus Süd, Engelbert-Arnold-Straße 4, Karlsruhe D-76128, Germany;3. Institut für Fahrzeugsystemsystemtechnik (FAST), Karlsruher Institut für Technologie (KIT), Rintheimer-Querallee 2, 76131 Karlsruhe, Germany;4. Applied Electrochemistry Department, Fraunhofer Institut für Chemische Technologie (ICT), Pfinztal 76327, Germany;5. Institute for Technical Physics and Materials Science, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Konkoly Thege Miklós Rd. 29–33, 1121 Budapest, Hungary;1. Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA;2. Maryland Nanocenter, University of Maryland, College Park, MD 20740, USA;3. National Institute of Standards and Technology, Boulder, CO 80305, USA;4. Center for Composite Materials and Department of Mechanical Engineering, University of Delaware, Newark, DE 19716, USA;5. Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA;6. NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA;7. Department of Materials Science & Engineering, University of Maryland, College Park, MD 20740, USA |
| |
| Abstract: | The joint effect of chemical functionalization and polymer melt blending conditions on carbon nanotube dispersion in polypropylene, as well as its influence on the electrical and mechanical properties of the resulting composites were investigated. Melt blending was performed using a prototype twin screw extruder enabling sampling along the barrel. The carbon nanotube dispersion was assessed by optical and scanning electron microscopy. The functionalization reaction was tailored for compatibility with the polymer, and characterized by X-ray photoelectron spectroscopy. In particular, nanotubes covalently bonded to polypropylene showed distinctive dispersion ability, while the carbon nanotube dispersion remained stable even after re-melting. However, the polypropylene-functionalized nanotubes produced composites with higher electrical resistivity, possibly due to the insulating effect of the polymer bonded to the nanotubes surface. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
