A stable iodine-doped multi-walled carbon nanotube-polypyrrole composite with improved electrical property
Source abstract
Abstract
Abstract A highly conductive carbon nanotubes-polymer composite is fabricated by iodine doping. Interestingly, the conductivity of both multi-walled carbon nanotubes (MWCNTs) and polypyrrole (PPy) keeps unaffected by iodine, but the MWCNT-PPy composite shows ∼3.4 times higher conductivity only with 5 wt% of iodine doped the composite. The electrical property is proved to be stable at room temperature. Hall Effect tests reveals the increasing carrier concentration and mobility of doped MWCNT-PPy lead to the high conductivity. According to Raman and XPS investigation, PPy and MWCNTs form an extended conjugated system through π–π interactions, which favors the p–π interactions of iodine with MWCNT-PPy. As a result, a typical conductive carrier N + in MWCNT-PPy composite raises significantly. Besides, the carrier mobility also increases due to the higher conjugate degree. Our results suggest that iodine doping is a useful way to improve the conductivity of as prepared CNTs-conjugated polymer products.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Conducting polymers and applications · Carbon Nanotubes in Composites · Supercapacitor Materials and Fabrication
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
Show source-provided references
1. Polymer/carbon nanotube nano composite fibers–a review10.1021/am405136s ↗
2. Electronic conduction in polymers, carbon nanotubes and graphene10.1039/c0cs00103a ↗
3. Carbon nanotubes: present and future commercial applications10.1126/science.1222453 ↗
4. A review and analysis of electrical percolation in carbon nanotube polymer composites10.1016/j.compscitech.2008.06.018 ↗
5. Ultra-low electrical percolation threshold in carbon-nanotube-epoxy composites10.1016/S0032-3861(03)00539-1 ↗
6. Low percolation thresholds of electrical conductivity and rheology in poly(ethylene terephthalate) through the networks of multi-walled carbon nanotubes10.1016/j.polymer.2005.11.028 ↗
7. A simple strategy to achieve very low percolation threshold via the selective distribution of carbon nanotubes at the interface of polymer blends10.1039/c2jm34295b ↗
8. Dispersion and functionalization of carbon nanotubes for polymer-based nanocomposites: A review10.1016/j.compositesa.2010.07.003 ↗
9. Correlation between dispersion state and electrical conductivity of MWCNTs/PP composites prepared by melt blending10.1016/j.compositesa.2009.11.009 ↗
10. Dispersion behaviour, thermal and electrical conductivities of carbon nanotube-polystyrene nanocomposites10.1049/mnl:20070073 ↗
11. Molecular mechanisms of salt effects on carbon nanotube dispersions in an organic solvent (N-methyl-2-pyrrolidone)10.1039/C1SC00232E ↗
12. Importance of the morphology and structure of the primary aggregates for the dispersibility of carbon nanotubes in polymer melts10.1016/j.compscitech.2013.05.014 ↗
13. Highly conducting, strong nanocomposites based on nanocellulose-assisted aqueous dispersions of single-wall carbon nsanotubes10.1021/nn4060368 ↗
14. How to achieve high electrical conductivity in aligned carbon nanotube polymer composites10.1016/j.carbon.2013.07.047 ↗
15. Aligned carbon nanotube/polymer composite fibers with improved mechanical strength and electrical conductivity10.1039/C1JM13769G ↗
16. Improved conductivity of carbon nanotube networks by in situ polymerization of a thin skin of conducting polymer10.1021/nn800201n ↗
17. 1D-confinement of polyiodides inside single-wall carbon nanotubes10.1016/j.carbon.2012.09.010 ↗
18. Iodine monochloride as a powerful enhancer of electrical conductivity of carbon nanotube wires10.1016/j.carbon.2014.02.058 ↗
19. Electronically modified single wall carbon nanohorns with iodine adsorption10.1016/j.cplett.2010.11.086 ↗
20. Reversible intercalation of charged iodine chains into carbon nanotube ropes10.1103/PhysRevLett.80.5560 ↗
21. Behavior of the high frequency Raman modes of double-wall carbon nanotubes after doping with bromine or iodine vapors10.1016/j.carbon.2011.04.061 ↗
22. Molecular iodine/polymer complexes10.1515/polyeng-2012-0122 ↗
23. Structure-conductivity relationships of iodine-doped polyaniline10.1002/(SICI)1099-0488(19970930)35:13<1993::AID-POLB1>3.0.CO;2-O ↗
24. Growth of free-standing polypyrrole nanosheets at air/liquid interface using J-aggregate of porphyrin derivative as in-situ template10.1021/ma2002849 ↗
25. Electrical properties of air-stable, iodine-doped carbon-nanotube-polymer composites10.1063/1.2801353 ↗
26. Electrical and mechanical properties of iodine-doped highly elongated ultrahigh molecular weight polyethylene films filled with multiwalled carbon nanotubes10.1103/PhysRevB.77.035419 ↗
27. Conductive properties and mechanism of polyvinyl chloride doped by a multi-walled carbon nanotube–polypyrrole nano-complex dopant10.1039/C3RA45332D ↗
28. Electrochemical polymerization and Raman study of polypyrrole and polyaniline thin films
29. Synthesis and characterization of water-soluble polypyrrole/multi-walled carbon nanotube composites10.1002/pi.2958 ↗
30. Surface modification of electroactive polymer films by ozone treatment10.1002/(SICI)1096-9918(199601)24:1<51::AID-SIA87>3.0.CO;2-9 ↗