Kinetics and Diffusion in Graphite Intercalation Compounds

Solin, S. A.

doi:10.1007/978-1-4757-5556-5_14

Cited by 4 publications

(1 citation statement)

References 28 publications

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“…From the thermodynamic point of view, the equilibrium structures (intercalated/exfoliated) achievable when blending a polymer/organoclay couple can be reliably forecast [1]. In contrast, the kinetics and the mechanism of intercalation of the surfactant or polymer into the clay stacks are less understood even if studied since long time ago [2]. The intercalation process is influenced by the transport of polymer into the primary particles of the silicate [3], as well as by the degree of polymerization and of the length of the surfactant tails and/or the presence of functional groups along the macromolecules [4].…”

Section: Introductionmentioning

confidence: 99%

XRD study of intercalation in statically annealed composites of ethylene copolymers and organically modified montmorillonites. 2. One-tailed organoclays

Filippi

Polacco

2014

International Journal of Smart and Nano Materials

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Ethylene copolymers with different polar comonomers, such as vinyl acetate, methyl acrylate, glycidyl methacrylate, and maleic anhydride, were used for the preparation of polymer/clay nanocomposites by statically annealing their mechanical mixtures with different commercial or home-made organically modified montmorillonites containing only one long alkyl tail. The nanostructure of the products was monitored by X-ray diffraction, and the dispersion of the silicate particles within the polymer matrix was qualitatively evaluated through microscopic analyses. The effect of the preparation conditions on the structure and the morphology of the composites was also addressed through the characterization of selected samples with similar composition prepared by melt compounding. In agreement with the findings reported in a previous paper for the composites filled with two-tailed organoclays, intercalation of the copolymer chains within the tighter galleries of the one-tailed clays occurs easily, independent of the application of a mechanical stress. However, the shear-driven break-up of the intercalated clay particles into smaller platelets (exfoliation) seems more hindered. A collapse of the organoclay interlayer spacing was only observed clearly for a commercial one-tailed organoclay – Cloisite® 30B – whereas the same effect was almost negligible for a home-made organoclay with similar structure

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Section: Introductionmentioning

confidence: 99%

XRD study of intercalation in statically annealed composites of ethylene copolymers and organically modified montmorillonites. 2. One-tailed organoclays

Filippi

Polacco

2014

International Journal of Smart and Nano Materials

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A Kinetic Model for Exfoliation Kinetics of Layered Materials

Texter

2015

Angewandte Chemie

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Exfoliation of two-dimensional materials is key to obtaining high-performance properties.W ep resent as imple kinetic model for exfoliation that is readily solved analytically. Random and irreversible sheet separation is postulated in the presence of highly effective stabilizers.T his model appears to quantitatively fit graphene exfoliation data, and it illuminates mechanistic aspects of exfoliation. Thicker sheets exfoliate muchfaster than trilayer and bilayer sheets.Exfoliation follows highly activated diffusion-controlled intercalation of stabilizer into inter-sheet galleries.Application to the most concentrated graphene exfoliation data available supports these assumptions and provides insight for practical treatment regimens.

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A Kinetic Model for Exfoliation Kinetics of Layered Materials

Texter

2015

Angew Chem Int Ed

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Exfoliation of two-dimensional materials is key to obtaining high-performance properties. We present a simple kinetic model for exfoliation that is readily solved analytically. Random and irreversible sheet separation is postulated in the presence of highly effective stabilizers. This model appears to quantitatively fit graphene exfoliation data, and it illuminates mechanistic aspects of exfoliation. Thicker sheets exfoliate much faster than trilayer and bilayer sheets. Exfoliation follows highly activated diffusion-controlled intercalation of stabilizer into inter-sheet galleries. Application to the most concentrated graphene exfoliation data available supports these assumptions and provides insight for practical treatment regimens.

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Kinetics and Diffusion in Graphite Intercalation Compounds

Cited by 4 publications

References 28 publications

XRD study of intercalation in statically annealed composites of ethylene copolymers and organically modified montmorillonites. 2. One-tailed organoclays

XRD study of intercalation in statically annealed composites of ethylene copolymers and organically modified montmorillonites. 2. One-tailed organoclays

A Kinetic Model for Exfoliation Kinetics of Layered Materials

A Kinetic Model for Exfoliation Kinetics of Layered Materials

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