Localization of carbon nanotubes at the interface in blends of polyamide and ethylene–acrylate copolymer

Baudouin, Anne-Christine; Devaux, Jacques; Bailly, Christian

doi:10.1016/j.polymer.2010.01.050

Cited by 198 publications

(146 citation statements)

References 43 publications

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“…Preferential localization of conductive filler in one of the phases is commonly explained by the differences in interfacial energies of the filler and the corresponding polymer, which originates from the different polarities and surface energies. Some of the authors compared the predication of the wetting coefficient or equivalent equations that described the localization of fillers in blends to their experimental observations [22][23][24]. However, it was very difficult to get the interfacial tensions of polymer melt at the processing temperature.…”

mentioning

confidence: 99%

“…However, it was very difficult to get the interfacial tensions of polymer melt at the processing temperature. The interfacial tensions of polymer at room temperature were used to predict the wetting coefficient [22,23,25], but sometimes results deviating from actual situation might be obtained. There are a few reports about CNT/PVDF composites prepared by double percolation concept [23,26].…”

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confidence: 99%

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Studies on the selective localization of multi-walled carbon nanotubes in blends of poly(vinylidene fluoride) and polycaprolactone

Li¹,

Ruan²,

Zhang³

et al. 2015

Express Polym. Lett.

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confidence: 99%

mentioning

confidence: 99%

Studies on the selective localization of multi-walled carbon nanotubes in blends of poly(vinylidene fluoride) and polycaprolactone

Li¹,

Ruan²,

Zhang³

et al. 2015

Express Polym. Lett.

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“…22,[32][33][34][35] The surface energies of ITO, pDPP5T-2, PCBM, Phen-NaDPO, pDPP5T-2:PCBM and pDPP5T-2:PCBM:Phen-NaDPO were determined by measuring the droplet's contact angle for three liquids (ultrapure water, diiodomethane and ethylene glycol) using the Owens-Wendt and Kaelble method (Fig. 3a).…”

Section: Resultsmentioning

confidence: 99%

Roll to roll compatible fabrication of inverted organic solar cells with a self-organized charge selective cathode interfacial layer

et al. 2016

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We successfully demonstrate a simple approach to printing efficient, inverted organic solar cells (OSCs) with a self-organized charge selective cathode interface layer based on the small-molecule Phen-NaDPO.Different from previous studies, Phen-NaDPO molecules were blended into a polymer/fullerene blend, comprising a low bandgap diketopyrrolopyrrole-quinquethiophene alternating copolymer pDPP5T-2 and phenyl-C 61 -butyric acid methyl ester (PC 61 BM), and processed by doctor blading in air. We observed a spontaneous, surface energy driven migration of Phen-NaDPO towards the ZnO interface and a subsequent formation of electron selective and barrier free extraction contacts. In the presence of 0.5 wt% Phen-NaDPO, a PCE of 5.4% was achieved for the inverted device based on an ITO/ZnO cathode. Notably, the photovoltaic performances remained at the same level with increasing the Phen-NaDPO concentration in the active layer from 0.25 to 1 wt%.Furthermore, this approach could be proven to effectively work with other cathodes such as bare ITO and ITO/AZO. The self-organization of Phen-NaDPO through spontaneous vertical phase separation is mainly attributed to its high surface energy and strong interaction with the cathode material. The present results highlight that a self-organized cathode interfacial material processed from a "ternary" active layer is fully compatible with the requirements for roll-to-roll fabrication of inverted organic solar cells.

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“…Physical coating of the CNT by selective adsorption is a preferable strategy for several reasons: first, it preserves all intrinsic features of the nanotubes; second, it provides efficient surface modification with ease and cost effectiveness; third, it is potentially reversible, which can be of importance to reduce contact resistance between the CNT. The effectiveness of this selective adsorption strategy for improved CNT dispersion or phase/interfacial selectivity has been demonstrated by our research team for acrylateethylene copolymers, polyamides, and polyethylene already [37,[41][42][43]. One key result of these studies is that the melting sequence of the polymers plays an important role for the final dispersion and morphology: the first polymer to contact the nanotubes during melting has the opportunity to strongly adsorb by noncovalent interaction.…”

Section: Introductionmentioning

confidence: 99%

Polypropylene Carbon Nanotubes Nanocomposites: Combined Influence of Block Copolymer Compatibilizer and Melt Annealing on Electrical Properties

Emplit

Tao

Lipnik

et al. 2017

Journal of Nanomaterials

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We study the influence of melt annealing and the presence of a block copolymer compatibilizer on the electrical properties of polypropylene carbon nanotubes (CNT) nanocomposites from the DC limit to microwave frequencies and link it to the morphological details. We show that the compatibilizer concentration controls three types of morphologies: separate CNT agglomerates, a network of well dispersed but interconnected CNT, and individualized but separate nanotubes. This explains why conductivity reaches an optimum over the whole frequency range at a low compatibilizer concentration. We model the corresponding structures by a semiquantitative schematic equivalent electrical circuit. A key outcome of the work is the understanding and control of dispersion mechanisms in order to optimize the electrical performances for efficient EMI shielding depending on the targeted frequency range.

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Localization of carbon nanotubes at the interface in blends of polyamide and ethylene–acrylate copolymer

Cited by 198 publications

References 43 publications

Studies on the selective localization of multi-walled carbon nanotubes in blends of poly(vinylidene fluoride) and polycaprolactone

Studies on the selective localization of multi-walled carbon nanotubes in blends of poly(vinylidene fluoride) and polycaprolactone

Roll to roll compatible fabrication of inverted organic solar cells with a self-organized charge selective cathode interfacial layer

Polypropylene Carbon Nanotubes Nanocomposites: Combined Influence of Block Copolymer Compatibilizer and Melt Annealing on Electrical Properties

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