Rheological properties and electrical conductivity of irradiated MWCNT/PP nanocomposites
Source abstract
Abstract
Abstract Novel rheological features and conductivity results of irradiated PP/MWCNT nanocomposites are presented. Elongational flow measurements reveal a strain hardening behaviour which is compatible with the creation of long chain branched macromolecules provoked by irradiation. However, oscillatory shear flow results suggest that irradiation does not affect interactions of MWCNTs with PP chains. The addition of carbon nanotubes brings about conductivities of the order of 10 −2 S/cm, but its scavenger effect reduces the number of radicals generated by irradiation, lessening the strain hardening effect. The employed mixing method provides a dispersion of MWCNTs in a PP matrix, which followed by an ad hoc irradiation, allows obtaining an electrical conductive polypropylene with a strain hardening behaviour. The obtained results open novel routes to conductive nanocomposites apt to be processed using methods discarded for linear PPs, such extrusion-blowing and others.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Carbon Nanotubes in Composites · Polymer Nanocomposites and Properties · Polymer crystallization and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
Show source-provided references
1. Conductivity spectroscopy on melt processed polypropylene-multiwalled carbon nanotube composites: recovery after shear and crystallization10.1016/j.polymer.2006.12.035 ↗
2. Nanotube networks in polymer nanocomposites Rheology and electrical conductivity10.1021/ma049164g ↗
3. Temperature dependence of creep behavior of PP-MWNT nanocomposites10.1002/marc.200700288 ↗
4. Carbon nanotube dispersion and exfoliation in polypropylene and structure and properties of the resulting composites10.1016/j.polymer.2008.02.029 ↗
5. Carbon–nanotubes–polypropylene nanocomposites for electrostatic discharge applications10.1021/ma901612w ↗
6. Rheological behaviour of multiwalled carbon nanotube/polycarbonate composite10.1016/S0032-3861(02)00151-9 ↗
7. Rheological and dielectrical characterization of melt mixed polycarbonate-multiwalled carbon nanotube composites10.1016/j.polymer.2004.10.040 ↗
8. Multi-walled carbon nanotube filled polypropylene nanocomposites based on masterbatch route: Improvement of dispersion and mechanical properties through PP-g-MA addition10.3144/expresspolymlett.2008.87 ↗
9. Masterbatch-based multi-walled carbon nanotube filled polypropylene nanocomposites: Assessment of rheological and mechanical properties10.1016/j.compscitech.2008.10.005 ↗
10. Ductile-to-semiductile transition in PP-MWNT nanocomposites-plus-(melt extrusion)10.1002/marc.200600892 ↗
11. Role of multi-wall carbon nanotube network in composites to crystallization of isotactic polypropylene matrix10.1016/j.polymer.2007.11.041 ↗
12. Fabrication of polypropylene/carbon nanotubes composites via a sequential process of (rotating solid-state mixing)10.1016/j.compscitech.2011.05.012 ↗
13. Microstructure and properties of polypropylene/carbon nanotube nanocomposites10.3390/ma3042884 ↗
14. Elongational viscosity and foaming behavior of PP modified by electron irradiation or nanotube addition10.1002/masy.200750858 ↗
15. Long chain branched polypropylenes by electron beam irradiation and their rheological properties10.1021/ma030579w ↗
16. The effect of long chain branching on the processability of polypropylene in thermoforming10.1002/pen.20089 ↗
17. Molecular structure of high melt strength polypropylene and its application to polymer design10.1016/j.polymer.2003.09.009 ↗
18. Long-chain branching of polypropylene by electron-beam irradiation in the molten state10.1002/app.22471 ↗
19. Peroxydicarbonate modification of polypropylene and extensional flow properties10.1016/S0032-3861(01)00553-5 ↗
20. The strain-hardening behaviour of linear and long-chain-branched polyolefin melts in extensional flows10.1007/s003970050010 ↗
21. Influence of gamma irradiation on carbon nanotube-reinforced polypropylene10.1166/jnn.2009.1555 ↗
22. Strucctural interpretations of deformation and fracture behaviour of polypropylene/multi-walled carbon nanotube composites10.1016/j.actamat.2008.01.010 ↗
23. Reaction mechanism to long branched PP10.1081/MA-100101626 ↗
24. Low percolation tresholds of electrical conductivity and rheology in polyethylene terephtalate through the networks of multiwalled carbon nanotubes10.1016/j.polymer.2005.11.028 ↗
25. Rheological and electrical properties of polypropylene composites containing functionalized multi-walled carbon nanotubes and compatibilizers10.1016/j.carbon.2007.08.042 ↗
26. Menzer · Compos Sci Technol · 2011 · 71 · 193610.1016/j.compscitech.2011.09.009 ↗
27. A comparative study on the electrical and mechanical behaviour of multiwalled carbon nanotube composites prepared by diluting a masterbatch with various types of polypropylenes10.1002/app.30418 ↗
28. Rheological properties and dispersion of multi-walled carbon nanotube (MWCNT) in polystyrene matrix10.1016/j.cap.2007.10.062 ↗
29. Electrical resistivity and rheological behaviors of carbon nanotubes-filled polypropylene composites10.1016/j.cplett.2004.07.047 ↗
30. Rheological and electrical properties of polycarbonate multiwalled carbon nanotubes composites10.1016/j.polymer.2006.04.008 ↗
31. Rheology of multiwalled carbon nanotube polybutylene terephtalate composites10.1002/polb.21233 ↗
32. Use of dynamic rheological behaviour to estimate the dispersion of carbon nanotubes in carbon nanotube polymer composites10.1021/jp802708j ↗
33. Deformation and orientation during shear and elongation of a polycarbonate/carbon nanotube composite in the melt10.1007/s00397-007-0179-6 ↗
34. Rheological evidence of modifications of polypropylene by beta-irradiation10.1007/s00397-002-0282-7 ↗
35. Effect of chain structure on the melt rheology of modified polypropylene10.1002/(SICI)1097-4628(19990822)73:8<1493::AID-APP18>3.0.CO;2-2 ↗
36. Influence of gamma irradiation on high density polyethylene/ethylene-vinyl acetate/clay nanocomposites10.1002/pat.518 ↗
37. Effects of gamma-irradiation on HMWPE/MWNT nanocomposites10.1016/j.compscitech.2010.11.013 ↗