Effect of the synthetic strategy on the non-covalent functionalization of multi-walled carbon nanotubes with polymerized ionic liquids |
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| Affiliation: | 1. Laboratoire de Chimie de Coordination UPR CNRS 8241, composante ENSIACET, Université de Toulouse UPS-INP-LCC 4 allée Emile Monso BP 44362, 31030 Toulouse Cedex 4, France;2. Solvionic, Site SNPE, Chemin de la Loge Toulouse 31078, France;1. Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Mahasarakham 44150, Thailand;2. Program of Science, Faculty of Education, Program of Chemistry, Faculty of Science and Technology, Bansomdej Chaopraya Rajabhat University, Bangkok 10600, Thailand;3. Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand;4. Division of Laser Biochemistry, Institute for Laser Technology, Osaka 550-0004, Japan;5. Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University, Osaka 558-8585, Japan;1. School of Engineering and Mawson Institute, University of South Australia, SA 5095, Australia;2. Key Laboratory for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China;3. Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080, China;4. Department of Mechanical Engineering, Faculty of Engineering, Benha University, Egypt |
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| Abstract: | Multiwalled carbon nanotubes (MWCNTs) have been non covalently functionalized with various imidazolium-based polymerized ionic liquids (PILs). Two functionalization methods, starting from ionic liquid (IL) monomers containing a vinyl group, have been explored: a simple solution mixing of MWCNTs and PILs and the in situ polymerization. The resulting hybrid materials have been characterized by infrared and Raman spectroscopy, transmission electron microscopy, zeta potential measurement, thermogravimetric analysis and differential scanning calorimetry, and their dispersibility in various solvents has been evaluated to access the effect of the functionalization. The particle size analysis of MWCNTs/PILs agglomerates in various solvents is also reported. The in situ method allows a homogeneous coating of the MWCNT surface and thus a better dispersion of the nanotubes. The solution mixing method, for which diffusion limitations of the PILs into MWCNT aggregates should exist, does not allow a uniform surface functionalization. Finally, with protic IL monomers showing a tendency for hydrogen bonding, we have produced stable CNT/PIL organo- or hydrogel composites. |
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