Poly(amino-methacrylate) as versatile agent for carbon nanotube dispersion: an experimental, theoretical and application study

Meyer, Franck; Minoia, Andrea; Raquez, Jean-Marie; Spasova, Mariya; Lazzaroni, Roberto; Dubois, Philippe

doi:10.1039/c0jm00386g

Cited by 40 publications

(34 citation statements)

References 21 publications

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“…Therefore, a variety of chemical and physical methods have been used to obtain good dispersions of the CNTs within polymer matrices. The different strategies include chemical modification, covalent attachments of monomers, oligomers, and polymers, adsorption of charged surfactants and polyelectrolytes, wrapping with polymers, non‐wrapping adsorption of partially collapsed block copolymers, and complexation by π–π or cation–π interactions …”

Section: Introductionmentioning

confidence: 99%

Polylactide stereocomplex crystallization prompted by multiwall carbon nanotubes

Arenaza

Sarasua

Amestoy

et al. 2013

J of Applied Polymer Sci

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Nanocomposites of equimolar enantiomeric polylactide blends with multiwall carbon nanotubes (MWCNTs) were prepared by a solvent casting/sonication procedure. The first objective of the study was to investigate the effect of MWCNTs as nucleating agents for the selective crystallization of the polylactide (PLA) stereocomplex to obtain PLA‐based nanocomposites. Transmission Electron Microscopy (TEM) studies revealed large agglomerates and poor distribution of the non‐functionalized MWCNTs within the matrix. To enhance the compatibility between PLA and MWCNTs, pyrene‐end‐functionalized PLLA (py‐end‐PLLA) nanocomposites were prepared because of the ability of the pyrene moieties to interact with the MWCNTs via π−π stacking, and were subsequently blended with poly(d‐lactide) (PDLA) to investigate the possibility of achieving nanocomposites in which the enantiomeric blend crystallizes as stereocomplex. The resulting nanocomposites were characterized by Differential Scanning Calorimetry (DSC), X‐ray Diffraction (XRD), TEM, and Nuclear Magnetic Resonance Spectroscopy (NMR), revealing that MWCNTs were efficient nucleating agents for the overall crystallization of the blends. Interestingly, full stereocomplexation could be achieved with the aid of soft specific thermal treatments. According to these results, the addition of small amounts of MWCNTs combined with a mild thermal treatment might extend the processing window for the preparation of polylactides exclusively crystallized in the stereocomplex form. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 4327–4337, 2013

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Section: Introductionmentioning

confidence: 99%

Polylactide stereocomplex crystallization prompted by multiwall carbon nanotubes

Arenaza

Sarasua

Amestoy

et al. 2013

J of Applied Polymer Sci

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“…[1][2][3] In the field of biotechnology, CNTs-based biomaterials have also proved quite versatile with applications as diverse as prosthesis, biomolecular recognition and drug delivery systems. 4 Nonetheless, strong intermolecular π-π interactions between the nanotube walls and their high aspect ratio lead to a bundle-like arrangement, which represents a major drawback for their processability and application.…”

Section: Introductionmentioning

confidence: 99%

Poly(ethylene oxide)-b-poly(l-lactide) Diblock Copolymer/Carbon Nanotube-Based Nanocomposites: LiCl as Supramolecular Structure-Directing Agent

et al. 2011

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(2011). Poly(ethylene oxide)-b-poly(l-lactide) Diblock Copolymer/Carbon Nanotube-Based Nanocomposites: LiCl as Supramolecular Structure-Directing Agent. Biomacromolecules, 12 (11),[4086][4087][4088][4089][4090][4091][4092][4093][4094] ABSTRACT: This work relies on the CNT dispersion in either solution or a polymer matrix through the formation of a three component supramolecular system composed of PEO-b-PLLA diblock copolymer, carbon nanotubes (CNTs) and lithium chloride. According to a one-pot procedure in solution, the "self-assembly" concept has demonstrated its efficiency using suspension tests of CNTs.Characterizations of the supramolecular system by photon correlation spectroscopy, raman spectroscopy and molecular dynamics simulations highlight the charge transfer interaction from the CNTs towards the PEO-b-PLLA/LiCl complex. Finally, this concept was successfully extended in bulk (absence of solvent) via melt-processing techniques by dispersing these complexes in a poly(L-Lactide) (PLA) matrix. Electrical conductivity measurements and transmission electron microscopy attested for the remarkable dispersion of CNTs, leading to high-performance PLA-based materials.KEYWORDS: carbon nanotubes, polylactide, poly(ethylene oxide), supramolecular interactions, reactive extrusion, nanocomposites, molecular dynamics simulations Intr oductionOver the last two decades, carbon nanotubes (CNTs) have attracted a special attention to design new nanocomposites due to a unique combination of mechanical, thermal, structural and electrical properties. [1][2][3] In the field of biotechnology, CNTs-based biomaterials have also proved quite versatile with applications as diverse as prosthesis, biomolecular recognition and drug delivery systems. 4 Nonetheless, strong intermolecular π-π interactions between the nanotube walls and their high aspect ratio lead to a bundle-like arrangement, which represents a major drawback for their processability and application. 5 Different strategies aiming at the dispersion of the CNTs in solution or in a polymer matrix have thus been developed. Most of them lie in the non-covalent and covalent functionalizations of CNT surface. 6 However, the supramolecular approach is emerging as a very appealing pathway since it takes advantage of the preservation of the unsaturated conjugated structure. [7][8] This is also supported by a wide range of non-covalent interactions, performed in a reliable and cost-effective manner. For instance, these 3 non-covalently coated CNTs maintain their intrinsic features, namely a robust mechanical behavior, a high electronic conductivity, and their potential biosensing properties.Poly(ethylene oxide) (PEO) belongs to the class of polyethers, exhibiting good solubility in water and organic solvents. As far as their applications are concerned, PEO-containing compounds are used as excipients or as carriers in different biological materials, foods and cosmetics. Moreover, these polymers can develop a specific behavior under varied stimuli such as temperature and salt conce...

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“…The first degradation started at 168°C for PGMIC and at 218°C for PGMIC-MWCNTs. The change in degradation temperature between PGMIC and PGMICMWCNTs is same as that of poly(N-(2-(dimethylamino) ethyl)-methacrylate) and poly(N-(2-(dimethylamino) ethyl)-methacrylate)/CNTs [35], which showed that hydrophobic effect is the mainly interaction between polymer and CNT. A degradation platform from 411°C to 481°C appeared in PGMIC-MWCNTs, which is different from the degradation curve of PGMIC.…”

Section: Effect Of Phmentioning

confidence: 65%

“…The ultrasound method is often used to disperse CNTs in aqueous surfactant solution [34], while the stirring method is usually used to disperse CNTs in some polymer solutions [35]. In our case, both dispersion methods were investigated in MWCNT dispersions with PGMIC.…”

Section: Effect Of Dispersion Methodsmentioning

confidence: 99%

Dispersion of multi-wall carbon nanotubes by an ionic liquid-based polyether in aqueous solution

et al. 2012

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Multi-wall carbon nanotubes (MWCNTs) can be effectively dispersed by an ionic liquid-based polyether, poly (1-glycidyl-3-methylimidazolium chloride) (PGMIC) in aqueous solution. The amount of dispersed MWCNTs increases with the increasing of PGMIC concentration, and then decreases. Reaggregation of MWCNTs is observed when PGMIC exceeded the optimal concentration, which may be due to the conformational change of PGMIC molecules around MWCNT. The ultrasonic dispersion method is better than stirring method in the PGMIC solution. Furthermore, the acidic solution is convenient to prepare stable MWCNTs suspensions. Through the characterizations of ultravioletvisible-near infrared, thermogravimetric analysis and Fourier transform infrared, it can be concluded that electrostatic repulsions, hydrophobic effect, n-π, and cation-π interactions played important roles in the dispersion of MWCNTs.

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Poly(amino-methacrylate) as versatile agent for carbon nanotube dispersion: an experimental, theoretical and application study

Cited by 40 publications

References 21 publications

Polylactide stereocomplex crystallization prompted by multiwall carbon nanotubes

Polylactide stereocomplex crystallization prompted by multiwall carbon nanotubes

Poly(ethylene oxide)-b-poly(l-lactide) Diblock Copolymer/Carbon Nanotube-Based Nanocomposites: LiCl as Supramolecular Structure-Directing Agent

Dispersion of multi-wall carbon nanotubes by an ionic liquid-based polyether in aqueous solution

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