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Letteratura scientifica selezionata sul tema "Particules de polymère"

Autore: Grafiati

Pubblicato: 21 dicembre 2024

Ultima modifica: 31 luglio 2025

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Articoli di riviste sul tema "Particules de polymère"

Chabert, Emmanuelle, Laurent Chazeau, Catherine Gauthier, Rémy Dendievel, and Jean-Yves Cavaillé. "Nanocomposites base polymère, renforcés par des particules rigides." Mécanique & Industries 5, no. 4 (2004): 489–96. http://dx.doi.org/10.1051/meca:2004049.

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Nguyen, Trang, Dris Rachid, Sabrina Guérin, Bruno Tassin, and Johnny Gasperi. "Transfert de microplastiques via le réseau d’assainissement unitaire : des dépôts au sein du réseau aux rejets urbains de temps de pluie." Techniques Sciences Méthodes, TSM 12/2024 (December 22, 2024): 107–15. https://doi.org/10.36904/tsm/202412107.

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S’il est reconnu dans la littérature que les eaux résiduaires urbaines véhiculent une charge en microplastiques (MP) importante, la contamination des dépôts de réseaux d’assainissement et des rejets urbains de temps de pluie restait jusqu’à lors inexplorée, malgré une contamination potentiellement importante. Les concentrations observées pour les dépôts (entre 5×103 à 178×103 particules/kg de sédiment sec) témoignent en effet qu’une partie des microplastiques véhiculées par les eaux usées peut sédimenter. Indépendamment du polymère considéré, la sédimentation d’une partie des microplastiques a

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Alshidi, Weeam, Tarek Ganat, Hamoud Al-Hadrami, Alireza Kazemi, Faras Al Balushi, and Hai T. Nguyen. "MWCNT Nanofluids Enhance Polymer Flooding Viscosity Through Particular Molecular Interactions." Journal of Physics: Conference Series 3027, no. 1 (2025): 012051. https://doi.org/10.1088/1742-6596/3027/1/012051.

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Abstract Improved oil recovery methods are essential to fulfill the world’s energy needs and maximize oil recovery from older oilfields. In order to boost the viscosity of injection water and enhance sweep efficiency, high molecular weight polymers, such as partially hydrolyzed polyacrylamides (HPAMs) are injected in a technique known as polymer flooding, which is a potential EOR technique. However, obstacles like excessive salinity and high temperatures can make polymer flooding less successful. In order to increase viscosity, thermal stability, and oil recovery results, recent research has c

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Guyot, A., R. Audebert, R. Botet, et al. "Floculation de particules colloïdales par les polymères hydrosolubles." Journal de Chimie Physique 87 (1990): 1859–99. http://dx.doi.org/10.1051/jcp/1990871859.

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Guyot, A. "Synthèse de petites particules polymères sphérique de taille contrôlée." Journal de Chimie Physique 84 (1987): 1085–93. http://dx.doi.org/10.1051/jcp/1987841085.

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Kausar, Ayesha. "Potential of Polymer/Fullerene Nanocomposites for Anticorrosion Applications in the Biomedical Field." Journal of Composites Science 6, no. 12 (2022): 394. http://dx.doi.org/10.3390/jcs6120394.

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Initially, this review presents the fundamentals of corrosion-resistant polymer/fullerene nanocomposites. Then, the potential of polymer/fullerene nanocomposites for corrosion resistance in biomedical applications is presented. In particular, anticorrosion biomedical applications of fullerene-based nanomaterials are proposed for antimicrobial applications, drug delivery, bioimaging, etc. According to the literature, due to the low conductivity/anticorrosion features of pristine thermoplastic polymers, conjugated polymers (polyaniline, polypyrrole, polythiophene, etc.) with high corrosion resis

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Nellithala, Dheeraj, Parin Shah, and Paul Kohl. "(Invited) Durability and Accelerated Aging of Anion-Conducting Membranes and Ionomers." ECS Meeting Abstracts MA2022-02, no. 43 (2022): 1606. http://dx.doi.org/10.1149/ma2022-02431606mtgabs.

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Low-temperature, polymer-based fuel cells and water electrolyzers using anion conductive polymers have several potential advantages over acid-based polymer electrolyzers. However, the long-term durability of the ion conducting polymer has not been investigated to the same extent as proton conducting polymers. Further, accelerated aging test conditions with known acceleration factors have not been developed. In this study, a family of poly(norbornene) polymers used in fuel cells and electrolyzers was aged under a variety of conditions to determine the aging rate and acceleration factors. In par

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Walton, Jeffrey H. "A Review of ¹²⁹Xe NMR as a Probe of Polymer Morphology." Engineering Plastics 2, no. 1 (1994): 147823919400200. http://dx.doi.org/10.1177/147823919400200105.

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129 Xe NMR is a new tool for probing the morphology of polymers and polymer blends. Recent developments of the NMR of 129 Xe gas dissolved in polymers are reviewed. This technique yields information on polymer morphology via the NMR lineshape and the isotropic chemical shift and their temperature dependencies. Polymer glass transition temperatures are plainly evident. The miscibility of polymer blends is easily determined and thus phase diagrams may be mapped out. Of particular use is the potential ability to measure domain sizes in immiscible polymer blends by 2-D NMR techniques. Domain sizes

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Walton, Jeffrey H. "A Review of ¹²⁹Xe NMR as a Probe of Polymer Morphology." Polymers and Polymer Composites 2, no. 1 (1994): 35–41. http://dx.doi.org/10.1177/096739119400200105.

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Al-Obaidi, Hisham, Mridul Majumder, and Fiza Bari. "Amorphous and Crystalline Particulates: Challenges and Perspectives in Drug Delivery." Current Pharmaceutical Design 23, no. 3 (2017): 350–61. http://dx.doi.org/10.2174/1381612822666161107162109.

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Crystalline and amorphous dispersions have been the focus of academic and industrial research due to their potential role in formulating poorly water-soluble drugs. This review looks at the progress made starting with crystalline carriers in the form of eutectics moving towards more complex crystalline mixtures. It also covers using glassy polymers to maintain the drug as amorphous exhibiting higher energy and entropy. However, the amorphous form tends to recrystallize on storage, which limits the benefits of this approach. Specific interactions between the drug and the polymer may retard this

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Più fonti

Tesi sul tema "Particules de polymère"

Quievryn, Caroline. "Incorporation de nano particules d'oxyde de terre rare dans un polymère commercial sous forme filamentaire." Thesis, Montpellier 2, 2014. http://www.theses.fr/2014MON20206.

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Cette thèse a pour thème l'incorporation de nanoparticules d'oxyde de terre rares (Erbium et Praséodyme) dans un polymère commercial, PVC, sous forme filamentaire. Ces fils sont élaborés à l'aide d'un pilote réalisé au laboratoire permettant un filage en solvant voie humide. Les nanoparticules incorporées sont d'abord commerciales (Er203) mais elles montrent des inconvénients, ce qui entraîne l'étude sur la synthèse de nanoparticules d'oxyde d'Erbium et de Praséodyme. Une fois ces particules obtenues, elles sont dispersées dans une solution de PVC/solvant. Cette solution "chargée" est pressée

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Leveque, Lucas. "Nanotubes de polymère fonctionnels pour des applications dans le domaine des détecteurs de particules de haute performance." Electronic Thesis or Diss., Lyon 1, 2025. http://www.theses.fr/2025LYO10018.

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Les polymères conjugués semi-conducteurs, tels que le P3HT (poly(3-hexylthiophène)), sont largement exploités dans divers domaines scientifiques, notamment pour la fabrication de transistors à effet de champ et de cellules photovoltaïques organiques. Plus récemment, ces polymères ont également été utilisés pour créer des nanostructures, comme des nanotubes ou des nanofils, en s’appuyant sur des membranes nanoporeuses en oxyde d’aluminium anodisé (AAO) comme matrice. Ce procédé permet d'améliorer les performances des dispositifs grâce au confinement nanométrique qui impose une conformation spéc

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Forey, Natacha. "Mousses renforcées en polymère ou particules : application à la remédiation des sols pollués." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0311.

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Pour des raisons environnementales et de santé publique, la remédiation des sites et sols pollués est impérative. Une des techniques in-situ utilisées pour dépolluer des sols présentant une pollution aux hydrocarbures, est l’utilisation de mousse liquide. Grâce à son effet bloquant, la mousse crée une barrière entre l’eau et le polluant, et facilite le pompage de celui-ci. La principale problématique de cette technique est la stabilité de la mousse face à l’huile. Des techniques de renforcement de la mousse en présence d’huile sont développées, notamment grâce à l’ajout de polymère ou de parti

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Nguyen, Tien Binh, and Tien Binh Nguyen. "Contrôle de l'interaction polymère/particules dans les membranes à matrice mixte." Doctoral thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/31251.

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Au cours des dernières décennies, la technologie membranaire a montré de grandes performances dans les séparations en phase liquide telles que la production d’eau potable à partir d’eau de mer. Beaucoup d’efforts ont été faits pour étendre son application aux séparations de gaz. La séparation des composants de l’air, des gaz industriels de raffineries, la séparation et la récupération du CO2 du biogaz et du gaz naturel sont des exemples dans lesquels la technologie membranaire est appliquée au niveau industriel. La séparation par membranes a été substituée ou interfacée avec les méthodes conve

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Cenacchi, Pereira Ana Maria. "Synthèse de particules composites anisotropes polymère / inorganique par polymérisation RAFT en émulsion." Phd thesis, Université Claude Bernard - Lyon I, 2014. http://tel.archives-ouvertes.fr/tel-01067453.

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Ces travaux décrivent l'élaboration de latex hybrides de polymère / nanotubes d'Imogolite et polymère / nanofeuillets d'hydroxydes doubles lamellaires (HDL) en milieu aqueux dispersé. Les deux charges inorganiques ont été choisies pour leurs propriétés thermiques, mécaniques et pour leur anisotropie de forme, ce qui pourrait permettre l'élaboration de films nanostructurés. Les latex ont été synthétisés par une stratégie originale basée sur le procédé de polymérisation RAFT en émulsion. Cette stratégie consiste à utiliser des copolymères hydrophiles (macroRAFT), comportant à la fois des unités

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Ponche, Arnaud. "Suspensions de particules dans des solutions de polymère : rhéométrie et observation microscopiques." Mulhouse, 2003. http://www.theses.fr/2003MULH0720.

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L'objectif de ce travail est de caractériser le comportement Théologique des suspensions de dioxyde de titane dans les solutions de polymère. Le premier chapitre est consacré à la caractérisation des suspensions étudiées. Les résultats obtenus en cisaillement permanent ainsi qu'en oscillation sont consignés dans le chapitre deux. Ces comportements sont expliqués par l'étude des interactions particule-particule et particule-polymère de la phase continue. Le troisième chapitre est ainsi consacré à la mise en place les outils d'analyse d'image nécessaires pour étudier les images obtenues sous cis

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Chong, Céline. "Élaboration de particules de polymère magnétiques multifonctionnelles pour la préparation d'échantillons biologiques." Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10333/document.

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Ce travail de thèse porte sur l'élaboration de particules de polymère magnétiques capables de capter et relarguer différents microorganismes par des interactions électrostatiques non spécifiques. Des nanoparticules d'oxyde de fer cationiques stabilisées par des contre-ions nitrate ont été synthétisées par coprécipitation de sels de fer. La surface de la maghémite obtenue a été modifiée par voie sol-gel avec un organosilane présentant une fonction méthacrylate pour permettre son incorporation covalente dans des particules de latex par des réactions de copolymérisation. Ces particules ont été ob

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Pont, Véronique. "Contribution à l'étude de la granulation des poudres en lit fluidisé : influence des paramètres du procédé et physico-chimiques sur la cinétique de granulation." Toulouse, INPT, 2000. http://www.theses.fr/2000INPT011G.

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Cette etude est consacree a la granulation de particules solides en lit fluidise discontinu par la pulverisation de solutions aqueuses de liants (polymeres ou sels mineraux). Outre la comprehension des phenomenes qui se produisent a l'echelle globale, l'objectif essentiel de ce travail est de mieux comprendre l'influence des phenomenes qui se produisent a l'echelle locale sur la cinetique de croissance et sur la resistance mecanique des agglomerats formes. Nous avons donc etudie l'influence des parametres lies au procede (vitesse de l'air de fluidisation, debit de la solution liante, concentra

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Ebengou, Roger H. "Mélanges siloxane - particules de silice : relaxation magnétique nucléaire, adsorption, gonflement cinétique de cristallisation polymère." Grenoble 1, 1992. http://www.theses.fr/1992GRE10062.

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Ce travail concerne les proprietes physiques des melanges silice-siloxane. Ces systemes sont formes d'agregats de silice interconnectes par des chaines polydimethylsiloxane adsorbees. La loi d'adsorption observee est caracteristique de l'adsorption en polymere fondu propre a ces systemes. Cette loi d'adsorption est aussi bien verifiee par la microanalyse du taux de polymere adsorbe, que par la mesure rmn du taux de monomeres fixes. La saturation de la surface est assimilee a un processus de diffusion macromoleculaire au voisinage d'un plan adsorbant. La formation du reseau silice-siloxane est

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Garg, Himani. "Particle laden inhomogeneous elastic turbulence." Thesis, Lille 1, 2019. http://www.theses.fr/2019LIL1I003/document.

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Les expériences de laboratoire montrent que, même dans des solutions très diluées, l’interaction des polymères avec des écoulements fluides peut modifier considérablement les propriétés des écoulements turbulents ou, si l’écoulement est laminaire, peut déclencher un nouveau type de mouvement irrégulier appelé «turbulence élastique». Les écoulements dans un tel régime dynamique sont prometteurs pour améliorer l'efficacité du mélange dans les applications microfluidiques, qui impliquent souvent la présence d'impuretés de taille finie en suspension, telles que des particules solides petites et lo

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Più fonti

Libri sul tema "Particules de polymère"

Keller, Thomas. Use of fibre reinforced polymers in bridge construction. International Association for Bridge and Structural Engineering (IABSE), 2003. http://dx.doi.org/10.2749/sed007.

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<p>The aim of the present Structural Engineering Document, a state-of-the-art report, is to review the progress made worldwide in the use of fibre reinforced polymers as structural components in bridges until the end of the year 2000.<p> Due to their advantageous material properties such as high specific strength, a large tolerance for frost and de-icing salts and, furthermore, short installation times with minimum traffic interference, fibre reinforced polymers have matured to become valuable alternative building materials for bridge structures. Today, fibre reinforced polymers a

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Andriotis, A. N., R. M. Sheetz, E. Richter, and M. Menon. Structural, electronic, magnetic, and transport properties of carbon-fullerene-based polymers. Edited by A. V. Narlikar and Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533053.013.21.

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This article discusses the structural, electronic, magnetic, and transport properties of carbon-fullerene-based polymers. In particular, it examines the defect-induced ferromagnetism of the C60-based polymers and its analog in the case of non-traditional inorganic materials. It first reviews the computational methods currently used in the literature, highlighting the pros and cons of each one of them. It then considers the defects associated with the ferromagnetism of the C60-based polymers, namely carbon vacancies, the 2 + 2 cycloaddition bonds and impurity atoms, and their effect on the elec

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Powder Technology in Plastics Processing. Hanser Publications, 2021.

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Powder Technology in Plastics Processing. Hanser Publications, 2021.

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Rasmussen, Seth C. The Origins and Early History of Conjugated Organic Polymers. Oxford University PressNew York, NY, 2025. https://doi.org/10.1093/9780197638194.001.0001.

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Abstract Conjugated organic polymers are intrinsic semiconducting materials that exhibit enhanced conductivity upon oxidation or reduction. The unusual nature of this class of organic polymers was brought into particular focus in the late 1970s with the first example of conductivity values in the metallic regime, for which the 2000 Nobel Prize in Chemistry was awarded to Hideki Shirakawa, Alan MacDiarmid, and Alan Heeger. As such, it is generally believed that these materials are a relatively recent advancement and originated with this polyacetylene work in the 1970s. This accepted narrative,

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Segal, David. Materials for the 21st Century. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198804079.001.0001.

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The book is a general text that shows how materials can contribute to solving problems facing nations in the 21st century. It is illustrated with diverse applications and highlights the potential of existing materials for everyday life, healthcare and the economies of nations. There are 13 chapters and a glossary of 500 materials with their descriptions, historical development, their use or potential use and a range of references. Specific areas include synthetic polymers (e.g. nylon), natural polymers (e.g. proteins, cellulose) and the role of materials in the development of digital computers

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ICAN/PART, particulate composite analyzer, user's manual and verification studies. National Aeronautics and Space Administration, 1996.

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Patrick, Graham. Organic Chemistry: A Very Short Introduction. Oxford University Press, 2017. http://dx.doi.org/10.1093/actrade/9780198759775.001.0001.

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Organic chemistry is the chemistry of compounds of carbon. As well as being central to life, in the form of large molecules such as nucleic acids and proteins, organic compounds are essential to many areas of industry. Organic Chemistry: A Very Short Introduction covers the whole range of organic compounds and their roles. Beginning with the structures and properties of the basic groups of organic compounds, it goes on to consider organic compounds in the areas of pharmaceuticals, polymers, food and drink, petrochemicals, and nanotechnology. It explores how new materials, such as graphene, are

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Erman, Burak, and James E. Mark. Structures and Properties of Rubberlike Networks. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195082371.001.0001.

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Rubber elasticity is an important sub-field of polymer science. This book is in many ways a sequel to the authors' previous, more introductory book, Rubberlike Elasticity: A Molecular Primer (Wiley-Interscience, 1988), and will in some respects replace the now classic book by L.R.G. Treloar, The Physics of Rubber Elasticity (Oxford, 1975). The present book has much in common with its predecessor, in particular its strong emphasis on molecular concepts and theories. Similarly, only equilibrium properties are covered in any detail. Though this book treats much of the same subject matter, it is a

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Capitoli di libri sul tema "Particules de polymère"

Gooch, Jan W. "Particulates." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_8440.

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Czarnecki, Lech, Dionys Van Gemert, Ru Wang, and Mahmoud Reda Taha. "Searching for a New C-PC Development Paradigm." In Springer Proceedings in Materials. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72955-3_1.

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AbstractIn less than a century, concrete has become the most commonly used construction material worldwide. Today, it is difficult to imagine concrete entirely devoid of polymers. The implantation of polymers into concrete has taken effect in the form of Concrete Polymer Composite [C-PC = PMC + PCC + PIC + PC]. Several milestones are recognised in the development of C-PC. They are discussed here with particular emphasis on the innovative milestones that shaped the use of polymers in concrete. As the difference between polymer cement concrete and ordinary concrete diminishes, the question: “Wha

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Dron’, Mykola, Andrii Dreus, Ludmila Dubovik, and Olena Kositsyna. "Thermodynamic assessment of the possibility of using polymeric materials in promising launch vehicles." In INNOVATIVE MATERIALS AND TECHNOLOGIES IN FUNCTIONAL ENGINEERING SYSTEMS. TECHNOLOGY CENTER PC, 2023. https://doi.org/10.15587/978-617-7319-96-1.ch4.

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One of the ways to reduce the cost of space launches for the operational launch of constellations of satellites into the Earth's orbit is the creation of targeted launch vehicles based on light and ultralight class rockets. The solution to this problem lies, among other things, in the area of development and application of new structural materials. The presented work considers the possibility of using polymers on the one hand as a structural material for creating the hulls of launch vehicles, and on the other hand as solid fuel for rocket engines. Research is related to the development of a ne

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Eyerer, Peter, Fabian Beilharz, Christof Hübner, Thilo Kupfer, and Christian Ulrich. "Opportunities and (in Particular) Risks of Use (Utilization Phase) of Plastic Structural Components." In Polymers - Opportunities and Risks I. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-88417-0_7.

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Yeon, Jung Heum, Yeoung-Geun Choi, Cheol-Jae Yang, and Kyu-Seok Yeon. "Effect of Polymer Paste Content on the Porosity and Strength of Pervious Polymer Concrete." In Springer Proceedings in Materials. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72955-3_26.

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AbstractThis study investigates the effect of polymer paste content on the porosity and strength of pervious polymer concrete made of unsaturated polyester resin, fly ash filler, and crushed coarse aggregate. The porosity (total porosity and connected porosity) and strength (compressive and flexural strengths) for different polymer paste contents were investigated. The polymer paste content was chosen as an experimental variable because it determines the cost-effectiveness and has a significant impact on various material properties. The results showed that the total and connected porosity fell

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Ayyanar, C. Balaji, and K. Marimuthu. "Characterization of Natural Particulates Filled and E-Glass Fiber-Reinforced Sandwich Polymer Composites." In Advances in Diverse Applications of Polymer Composites. Apple Academic Press, 2023. http://dx.doi.org/10.1201/9781003300526-2.

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Hale, Robert C., Meredith E. Seeley, Ashley E. King, and Lehuan H. Yu. "Analytical Chemistry of Plastic Debris: Sampling, Methods, and Instrumentation." In Microplastic in the Environment: Pattern and Process. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78627-4_2.

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AbstractApproaches for the collection and analysis of plastic debris in environmental matrices are rapidly evolving. Such plastics span a continuum of sizes, encompassing large (macro-), medium (micro-, typically defined as particles between 1 μm and 5 mm), and smaller (nano-) plastics. All are of environmental relevance. Particle sizes are dynamic. Large plastics may fragment over time, while smaller particles may agglomerate in the field. The diverse morphologies (fragment, fiber, sphere) and chemical compositions of microplastics further complicate their characterization. Fibers are of grow

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Kori, Mahesh A., Anand N. Sonnad, and Shravankumar B. Kerur. "Aluminum Oxide (Al₂O₃) Particulates as Reinforcement in Polyethylene Tetraphalate (PET) Polymer: A Multifaceted Investigations." In Advances in Science, Technology & Innovation. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-73816-6_38.

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Esmaeili, M., R. Ansari, and A. K. Haghi. "Progress on Carbon Nanotube Pull-Out Simulation With Particular Application on Polymer Matrix Via Finite Element Model Method." In Engineered Carbon Nanotubes and Nanofibrous Materials. Apple Academic Press, 2018. http://dx.doi.org/10.1201/9781351048125-4.

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Hilaire, Didier. "Biodétérioration des matériaux." In Biodétérioration des matériaux. EDP Sciences, 1998. https://doi.org/10.3917/edp.lemai.1998.01.0103.

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Résumé Les polymères sont des matériaux régulièrement considérés comme inertes à l’action des agents biologiques. Cependant des phénomènes de biodétérioration sont parfois observés, le plus souvent occasionnés par des micro-organismes en particulier des champignons filamenteux. Différents paramètres environnementaux et propres aux polymères (groupements chimiques du polymère, adjuvant, état de surface) favorisent l’apparition de ces détériorations d’origine biologique. Des essais in vitro permettent d’évaluer la sensibilité des polymères, l’action des micro-organismes et de déterminer l’incide

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Atti di convegni sul tema "Particules de polymère"

Wilson, D. "Influence of Molecular Weight on Selection and Application of Polymeric Scale Inhibitors." In CORROSION 1994. NACE International, 1994. https://doi.org/10.5006/c1994-94048.

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Abstract A homologous series of polycarboxylic acids of varying molecular weight have been evaluated in performance tests for their activity against sulphate and carbonate scales. Assessment of compatibility with brines and polymer efficiency both before and after thermal and hydrolytic stability testing was determined using jar and capillary tube blocking tests. Simulated 'squeeze' treatments on core samples have been performed to study the adsorption/desorption behaviour of the range of polymers. From test results on the polymers, it can be demonstrated that polymer molecular weight has a ma

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Pierce, C. C., and D. A. Grattan. "Chemical and Physical Parameters Controlling Polymer Performance in Boiler Systems." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88205.

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Abstract Water soluble polymers for internal boiler treatment should prevent precipitation of scaling salts and allow the formation of a very thin, corrosion protective film on heat transfer surfaces. Parameters controlling the performance of polymers will be presented and discussed. In particular, the effect of polymer molecular weight, complexing ability, chemical composition and thermal stability will be addressed.

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Kannan, Balaji, Wilson Ho, Pedro Atz Dick, et al. "Biobased Epoxy Amine Primers for Corrosion Protection of Steel & Aluminum Alloys." In CONFERENCE 2025. AMPP, 2025. https://doi.org/10.5006/c2025-00224.

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Abstract The development of environmentally friendly cure chemistries which can be used to make polymers is a major area of focus in the polymer industry [1]. One area of particular interest to the DoD and Army Corps of Engineers is the development of biobased epoxies and amines which can be used as an alternative to petrochemical based building blocks to make biobased epoxy-amine coatings for the corrosion protection of various substrates. In this presentation, the corrosion performance of epoxy-amine primers under development is assessed by a combination of electrochemical measurements and a

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Zeng, Jing. "Polyurethanes in Seamless Polymer Flooring Systems." In Paint and Coatings Expo (PACE) 2009. SSPC, 2009. https://doi.org/10.5006/s2009-00057.

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Polyurethane technologies have demonstrated their applications in a variety of seamless polymer flooring systems. Aliphatic polyurethanes are widely used as topcoats since they provide combinations of good color stability, gloss retention, abrasion resistance, chemical resistance, and weathering resistance. Recent development in polyaspartic chemistry offers more options in coating thickness, curing temperatures, and solids content. Aromatic polyurethanes are used in resilient coatings and modified concretes due to their flexibility, toughness, and thermal shock resistance. This article will d

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Lee, Daniel, and Richard Griffin. "The Evaluation of the Corrosion Resistance of Metallic Substrates Protected by a Hydrophobic Coating." In CORROSION 1996. NACE International, 1996. https://doi.org/10.5006/c1996-96340.

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Abstract With the advent of polymeric materials, various uses for these materials have been discovered in the quest to best utilize their unique characteristics. One property that a few polymers possess is hydrophobicity; that is water repelling. Consequently, one particular use for hydrophobic materials is in the area of corrosion protection. When applied as a coating material, hydrophobic polymers, theoretically, should provide excellent protection against corrosive environments. In order to ascertain the performance of hydrophobic materials in corrosion service, metallic substrates of alumi

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Wilson, D., and B. J. Hepburn. "An Alternative Polymer for Squeeze Treatments." In CORROSION 1997. NACE International, 1997. https://doi.org/10.5006/c1997-97172.

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Abstract Chemicals being discharged into the environment are increasingly under scrutiny for environmental impact. New chemicals being brought to the market place, for scale and corrosion control, are likely to be influenced by developing legislation and regulations. Studies of thermal Polyaspartate, a 'green inhibitor', have found it to be an excellent Squeeze control additive for barium and calcium sulphate inhibition. Adsorption and coreflood studies demonstrate the good surface active properties of this thermal Polyaspartate that leads to long squeeze lifetimes. Good calcium compatibility

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Advincula, Rigoberto C. "Polymer and Nanomaterial Based Inhibitors: Stimuli-Responsive." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-09586.

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Abstract The use of polymer based chemical inhibitors has the advantage of utilizing chemical, macromolecular, and compositional (blends or block copolymers) towards chemical inhibitors whether it is for corrosion or scaling issues. It is important to understand the multi-phase condition of production fluids whether it is extraction or circulation (oil and gas vs geothermal brine). It is also important to understand the mechanism and the long-term action of inhibition from the fluid to the surface that is being protected. This talk will highlight the principles and work in investigating variou

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Kashkoush, Michael, J. Tuggle, W. Kovacs, et al. "Polymers Testing in Sour Environments at High Temperature and Pressures." In CORROSION 2010. NACE International, 2010. https://doi.org/10.5006/c2010-10281.

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Abstract Due to the increase in need for combustibles, in particular oil, sweet hydrocarbon reservoirs are fast becoming depleted. This has led to the need to tap into sour reservoirs. The presence of hydrogen sulfide (H2S) in the reservoirs has presented new challenges to oil production companies. Among these challenges is determining the effect of H2S on elastomeric seals used in oil production systems. This paper examines the effect of H2S on both the mechanical and chemical properties of elastomers commonly used in the petrochemical industry. Exposures to an extreme aggressive environment

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Mondy, Lisa, Rekha Rao, Eric Lindgren, Amy Sun, Robert Lagasse, and Kyle Thompson. "Migration and Settling of Particulates in Filled Epoxies." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45780.

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Manufacturing applications for filled polymers include encapsulation of microelectronics and injection molding of composite parts. Predictive tools for simulating these manufacturing processes require knowledge of time- and temperature-dependent rheology of the polymer as well as information about local particle concentration. The overall system rheology is highly dependent on the particle concentration. The local particle concentration can change due to gravity, convection and shear-induced migration. For the epoxy systems of interest, an extent of reaction can be used to track the degree of

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Morlet-Savary, Christiane C., Christelle Heinis, and Daniel-Joseph Lougnot. "Particular holographic applications developed with self-processing polymer." In Lasers and Materials in Industry and Opto-Contact Workshop, edited by Roger A. Lessard. SPIE, 1998. http://dx.doi.org/10.1117/12.323492.

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Rapporti di organizzazioni sul tema "Particules de polymère"

Speranza, Vito, Sara Liparoti, Giuseppe Titomanlio, and Roberto Pantani. Modeling of polymer processing of thermoplastic polymers: application to the injection molding process. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.im.5.

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In the transformation operations of polymeric materials, there is a complex interplay between transport phenomena and crystallization. In particular, the polymer in the molten state is a viscoelastic fluid with rheological parameters depending on temperature, pressure, crystallinity, and molecular stretch. The molecular stretch is a tensor variable with values determined by the history of the flow, temperature, and pressure fields. During polymer processing operations, several phenomena proceed simultaneously by interacting with each other. The combination and interplay of the models that desc

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EFFC/DFI Support Fluids Task Group. EFFC/DFI Guide to Support Fluids for Deep Foundations , First Edition. European Federation of Foundation Contractors and Deep Foundations Institute, 2019. https://doi.org/10.37308/effc-dfi-sftg-guide-e1-2019.

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This guide represents the state of the art of support fluid practice and aims to improve existing design, testing and practices for deep foundation elements – bored piles (drilled shafts), barrettes (LBEs) and diaphragm wall panels. It represents the first time that knowledge of good practice from around the world has been brought together into a single authoritative publication. The purpose of this Guide is to present current understanding on bentonite, other clays, polymers and blended systems, including the advantages and limitations, in order to allow informed selection of the optimum tech

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