Bibliographies thématiques / Superglasse

Littérature scientifique sur le sujet « Superglasse »

Auteur : Grafiati

Publié le 14 mars 2023

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Articles de revues sur le sujet "Superglasse"

Ameen, Ahmed W., Peter M. Budd et Patricia Gorgojo. « Superglassy Polymers to Treat Natural Gas by Hybrid Membrane/Amine Processes : Can Fillers Help ? » Membranes 10, n^o 12 (10 décembre 2020) : 413. http://dx.doi.org/10.3390/membranes10120413.

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Superglassy polymers have emerged as potential membrane materials for several gas separation applications, including acid gas removal from natural gas. Despite the superior performance shown at laboratory scale, their use at industrial scale is hampered by their large drop in gas permeability over time due to physical aging. Several strategies are proposed in the literature to prevent loss of performance, the incorporation of fillers being a successful approach. In this work, we provide a comprehensive economic study on the application of superglassy membranes in a hybrid membrane/amine process for natural gas sweetening. The hybrid process is compared with the more traditional stand-alone amine-absorption technique for a range of membrane gas separation properties (CO2 permeance and CO2/CH4 selectivity), and recommendations for long-term membrane performance are made. These recommendations can drive future research on producing mixed matrix membranes (MMMs) of superglassy polymers with anti-aging properties (i.e., target permeance and selectivity is maintained over time), as thin film nanocomposite membranes (TFNs). For the selected natural gas composition of 28% of acid gas content (8% CO2 and 20% H2S), we have found that a CO2 permeance of 200 GPU and a CO2/CH4 selectivity of 16 is an optimal target.

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Kleemann, Wolfgang, et Jan Dec. « Relaxor ferroelectrics and related superglasses ». Ferroelectrics 553, n^o 1 (10 décembre 2019) : 1–7. http://dx.doi.org/10.1080/00150193.2019.1683489.

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Hunt, B., E. Pratt, V. Gadagkar, M. Yamashita, A. V. Balatsky et J. C. Davis. « Evidence for a Superglass State in Solid 4He ». Science 324, n^o 5927 (30 avril 2009) : 632–36. http://dx.doi.org/10.1126/science.1169512.

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Golemme, Gianni, Andrea Bruno, Raffaella Manes et Daniela Muoio. « Preparation and properties of superglassy polymers — zeolite mixed matrix membranes ». Desalination 200, n^o 1-3 (novembre 2006) : 440–42. http://dx.doi.org/10.1016/j.desal.2006.03.396.

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Andrady, Anthony L., Timothy C. Merkel et Lora G. Toy. « Effect of Particle Size on Gas Permeability of Filled Superglassy Polymers ». Macromolecules 37, n^o 11 (juin 2004) : 4329–31. http://dx.doi.org/10.1021/ma049510u.

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Kleemann, Wolfgang, et Jan Dec. « Ferroic superglasses : Relaxor ferroelectrics PMN and SBN vs. CoFe superspin glass ». Ferroelectrics 534, n^o 1 (3 octobre 2018) : 1–10. http://dx.doi.org/10.1080/00150193.2018.1473454.

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Muzzi, Chiara, Alessio Fuoco, Marcello Monteleone, Elisa Esposito, Johannes C. Jansen et Elena Tocci. « Optical Analysis of the Internal Void Structure in Polymer Membranes for Gas Separation ». Membranes 10, n^o 11 (5 novembre 2020) : 328. http://dx.doi.org/10.3390/membranes10110328.

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Global warming by greenhouse gas emissions is one of the main threats of our modern society, and efficient CO2 capture processes are needed to solve this problem. Membrane separation processes have been identified among the most promising technologies for CO2 capture, and these require the development of highly efficient membrane materials which, in turn, requires detailed understanding of their operation mechanism. In the last decades, molecular modeling studies have become an extremely powerful tool to understand and anticipate the gas transport properties of polymeric membranes. This work presents a study on the correlation of the structural features of different membrane materials, analyzed by means of molecular dynamics simulation, and their gas diffusivity/selectivity. We propose a simplified method to determine the void size distribution via an automatic image recognition tool, along with a consolidated Connolly probe sensing of space, without the need of demanding computational procedures. Based on a picture of the void shape and width, automatic image recognition tests the dimensions of the void elements, reducing them to ellipses. Comparison of the minor axis of the obtained ellipses with the diameters of the gases yields a qualitative estimation of non-accessible paths in the geometrical arrangement of polymeric chains. A second tool, the Connolly probe sensing of space, gives more details on the complexity of voids. The combination of the two proposed tools can be used for a qualitative and rapid screening of material models and for an estimation of the trend in their diffusivity selectivity. The main differences in the structural features of three different classes of polymers are investigated in this work (glassy polymers, superglassy perfluoropolymers and high free volume polymers of intrinsic microporosity), and the results show how the proposed computationally less demanding analysis can be linked with their selectivities.

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Boninsegni, Massimo, Nikolay Prokof’ev et Boris Svistunov. « Superglass Phase ofHe4 ». Physical Review Letters 96, n^o 10 (16 mars 2006). http://dx.doi.org/10.1103/physrevlett.96.105301.

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Larson, Derek, et Ying-Jer Kao. « Tuning the Disorder in Superglasses ». Physical Review Letters 109, n^o 15 (9 octobre 2012). http://dx.doi.org/10.1103/physrevlett.109.157202.

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Yu, Xiaoquan, et Markus Müller. « Mean field theory of superglasses ». Physical Review B 85, n^o 10 (19 mars 2012). http://dx.doi.org/10.1103/physrevb.85.104205.

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Thèses sur le sujet "Superglasse"

Dang, Long Dinh. « Superfluidity near localization supersolid and superglass / ». 2010. http://hdl.handle.net/10048/1167.

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Thesis (Ph. D.)--University of Alberta, 2010.
Title from pdf file main screen (viewed on July 13, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy, Department of Physics, University of Alberta. Includes bibliographical references.

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Dang, Long. « Superuidity near localization : supersolid and superglass ». Phd thesis, 2010. http://hdl.handle.net/10048/1167.

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The main theme of this thesis is the interplay between superuidity and localization, in a system of strongly correlated Bose particles. Driving this investigation is the search for yet unobserved phases of matter, such as the so-called supersolid. Using state-of-the- art, numerically exact computer simulations, we have carried out an extensive theoretical investigation of the effects of long-range interactions, inhomogeneity, disorder and frustration in a simple model of lattice Bosons. In particular, we explore the scenario of vacancy- and interstitial-based supersolid phases of hard core bosons on a square lattice, interacting repulsively via a nearest-neighbour and next-nearest neighbour potential. Secondly, in an attempt to model the physics of a layer of helium adsorbed on a corrugated substrate, an additional superlattice of the absorption sites is imposed to the system of hard core bosons, and the resulting low temperature phase diagram is studied. Finally, the possibility of actually inducing by disorder superuidity (superglass) in a system that does not display it in the absence of disorder is demonstrated. The quantitative and qual- itative predictions at which we have arrived appear to be at least in principle testable experimentally, for example by performing measurements on ultracold atoms in optical lattices.

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Livres sur le sujet "Superglasse"

Commission, Great Britain Competition. Knauf Insulation Limited and Superglass Insulation Limited : A report on the proposed acquisition of Superglass Insulation Limited by Knauf Insulation Limited. London : The Stationery Office, 2004.

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Stanley, Martin, et Paul Geroski. A Report On The Proposed Acquisition Of Superglass Insulation Limited : Competition Commission Report. Stationery Office, 2004.

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