The influence of carbon nanotube functionalization route on the efficiency of dispersion in polypropylene by twin-screw extrusion
Source abstract
Abstract
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.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Carbon Nanotubes in Composites · Smart Materials for Construction · Conducting polymers and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Thermal transport measurements of individual multiwalled nanotubes10.1103/PhysRevLett.87.215502 ↗
2. Strength and breaking mechanism of multiwalled carbon nanotubes under tensile load10.1126/science.287.5453.637 ↗
3. Emerging applications of carbon nanotubes10.1021/cm102406h ↗
4. Recent advances in synthesis, physical properties and applications of conducting polymer nanotubes and nanofibers10.1016/j.progpolymsci.2011.04.001 ↗
5. Fabrication of carbon multiwall nanotube/polymer composites by shear mixing10.1002/1439-2054(20020601)287:6<395::AID-MAME395>3.0.CO;2-S ↗
6. Polypropylene fibers reinforced with carbon nanotubes10.1002/app.11160 ↗
7. Crystallization and orientation studies in polypropylene/single wall carbon nanotube composite10.1016/S0032-3861(03)00073-9 ↗
8. Correlation between dispersion state and electrical conductivity of MWCNTs/PP composites prepared by melt blending10.1016/j.compositesa.2009.11.009 ↗
9. Influence of twin screw extrusion processing condition on the properties of polypropylene/multi-walled carbon nanotube nanocomposites
10. The effect of flow type and chemical functionalization on the dispersion of carbon nanofibre agglomerates in polypropylene10.1016/j.compositesa.2012.01.017 ↗
11. Analysis of agglomerate rupture in linear flow fields10.3139/217.890003 ↗
12. Analysis of agglomerate dispersion mechanism of multiwalled carbon nanotubes during melt mixing in polycarbonate10.1016/j.polymer.2010.02.048 ↗
13. Observation of carbon black agglomerate dispersion in simple shear flows10.1002/pen.760301202 ↗
14. Characterization of agglomerate dispersion by erosion in simple shear flows10.1002/pen.760310804 ↗
15. A comparative study on the electrical and mechanical behaviour of multi-walled carbon nanotube composites prepared by diluting a masterbatch with various types of polypropylenes10.1002/app.30418 ↗
16. Functionalization of multi-wall carbon nanotubes with silane and its reinforcement on polypropylene composites10.1016/j.compscitech.2008.02.003 ↗
17. Structure and properties of polypropylene-wrapped carbon nanotubes composite10.1002/app.30204 ↗
18. Assessing the strengths and weaknesses of various types of pre-treatments of carbon nanotubes on the properties of polymer/carbon nanotubes composites: a critical review10.1016/j.polymer.2010.01.044 ↗
19. Dispersion and functionalization of carbon nanotubes for polymer-based nanocomposites: a review10.1016/j.compositesa.2010.07.003 ↗
20. Thermal and mechanical properties of single-walled carbon nanotubes-polypropylene composites prepared by melt processing10.1016/j.carbon.2005.01.031 ↗
21. Effect of carbon nanotubes functionalization on the structural and mechanical properties of polypropylene/MWCNT composites10.1021/ma801599q ↗
22. Stress transfer and fracture mechanisms in carbon nanotube – reinforced polymer nanocomposites
23. Controlled functionalization of carbon nanotubes by a solvent-free multicomponent approach10.1021/nn1022523 ↗
24. Evolution of morphology and chemical conversion along the screw in a corotating twin-screw extruder10.1002/(SICI)1097-4628(19990103)71:1<135::AID-APP16>3.0.CO;2-M ↗
25. High-resolution X-ray photoemission spectrum of the valence bands of gold10.1103/PhysRevB.5.4709 ↗
26. Dispersability and particle size distribution of CNTs in an aqueous surfactant dispersion as a function of ultrasonic treatment time10.1016/j.carbon.2010.04.002 ↗
27. On-line monitoring of the residence time distribution along a kneading block of a twin-screw extruder10.1016/j.polymertesting.2004.05.001 ↗
28. Conductivity spectroscopy on melt processed polypropylene-multiwalled carbon nanotube composites: recovery after shear and crystallization10.1016/j.polymer.2006.12.035 ↗
29. Dispersion, interfacial interaction and re-agglomeration of functionalized carbon nanotubes in epoxy composites10.1016/j.carbon.2010.01.028 ↗