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Dissertations / Theses on the topic 'Colloïde nanocomposite'

Author: Grafiati

Published: 12 April 2025

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1

Ma, Huanhuan. "Synthesis of silica/polymer hybrid particles with controlled morphologies through polymerization induced co-assembly of grafted and free block copolymers." Electronic Thesis or Diss., Lyon 1, 2024. http://www.theses.fr/2024LYO10330.

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Les colloïdes nanocomposites organiques/inorganiques suscitent une attention considérable en raison de leur large gamme d'applications potentielles. L'auto-assemblage induit par la polymérisation (PISA) de copolymères à blocs en surface de nanoparticules inorganiques est reconnu comme une stratégie particulièrement efficace pour la synthèse de ces matériaux. Cette étude vise à synthétiser des brosses de polymères hydrophiles à la surface de particules de silice en utilisant la polymérisation radicalaire contrôlée par la voie nitroxyde (NMP) et à les utiliser par la suite comme macroamorceurs p

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2

Sun, Yangyang. "Study on the Nanocomposite Underfill for Flip-Chip Application." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/13975.

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Underfill material is a special colloidal dispersion system with silicon dioxide particles in the organic liquid. It is used to improve the reliability of integrated circuits (IC) packaging in the microelectronics. In order to successfully synthesize the nanocomposite underfill meeting the requirements of the chip package, it is necessary to have a fundamental understanding about the particle stability in the non-aqueous liquid and the relationship between materials properties and interphase structure in the composite. The results of this thesis contribute to the knowledge of colloidal dispers

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3

Klein, Guillaume. "Propriétés tribologiques de films issus de latex acryliques nanocomposites." Strasbourg, 2010. http://www.theses.fr/2011STRA6067.

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Parmi les applications des colloïdes polymères aqueux, le domaine des revêtements est prédominant. Dans cette spécialité, la compréhension des propriétés mécaniques, en particulier tribologiques, est essentielle. La problématique générale de cette thèse s’inscrit dans l’amélioration de la compréhension du comportement tribologique de films issus de latex soumis au frottement d’une bille d’acier. Deux types de systèmes de latex acryliques bien distincts se dégagent de cette thèse. D’une part des systèmes modèles, où nous avons fait varier certaines grandeurs physico-chimiques pertinentes, susce

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4

Kostadinova, Dessislava. "Préparation et caractérisation de catalyseurs métaux supportés à partir de nanocomposites colloïdes métalliques/HDL." Montpellier 2, 2007. http://www.theses.fr/2007MON20211.

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5

Sun, Zhengfei Wei Yen. "Novel sol-gel nanoporous materials, nanocomposites and their applications in bioscience /." Philadelphia, Pa. : Drexel University, 2005. http://dspace.library.drexel.edu/handle/1860/556.

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6

Oberdisse, Julian. "STRUCTURES DANS LES COLLOÏDES ET NANOCOMPOSITES DESTINES AU RENFORCEMENT : ETUDE PAR DIFFUSION DE NEUTRONS AUX PETITS ANGLES." Habilitation à diriger des recherches, Université Montpellier II - Sciences et Techniques du Languedoc, 2005. http://tel.archives-ouvertes.fr/tel-00010688.

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Dans la première partie, nous présentons l'étude de la structure de nanocomposites nanosilice-latex et de colloïdes (micelles adsorbées, complexes de colloïdes), par diffusion de neutrons aux petits angles. Dans la deuxième partie, les propriétés mécaniques des nanocomposites sont discutées. Nous présentons également une simulation numérique d'un réseau de polymères très enchevetré. Dans le dernier chapitre, nous décrivant un prototype de spectromètre de diffusion de neutrons aux très petits angles, installé au Laboratoire Léon Brillouin.

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7

Brunet, Paul. "Procédé de dépôt de couches minces nanocomposites par décharge à barrière diélectrique : de l'aérosol d'une suspension colloïdale à la morphologie du dépôt." Thesis, Perpignan, 2017. http://www.theses.fr/2017PERP0018.

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Le développement de procédé évoluant à la pression atmosphérique représente un enjeu majeur dans le dépôt de couches minces nanocomposites. Parmi ces procédés, les Décharges à Barrières Diélectriques présentent l'avantage d'être un procédé vert sans effluent gazeux, pouvant facilement être intégrées dans une chaine de production industrielle. L'approche choisie pour la réalisation de couches minces nanocomposites repose sur l'injection sous forme d'aérosol d'une suspension colloïdale dans la DBD. Les nanoparticules semi-conductrices de TiO2 sont choisies et mise en suspension dans un alcool po

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8

Goetz, Lee Ann. "Preparation and analysis of crosslinked lignocellulosic fibers and cellulose nanowhiskers with poly(methyl-vinyl ether co maleic acid) â " polyethylene glycol to create novel water absorbing materials." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45893.

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The search for cellulosic based products as a viable alternative for petroleum-based products was the impetus for covalently crosslinking lignocellulosic fibers and nanocellulose whiskers with poly(methyl vinyl ether) co maleic acid (PMVEMA) - polyethylene glycol (PEG). The lignocellulosics used were ECF bleached softwood (pine) and ECF bleached birch kraft pulp. This thesis also tests the hypothesis that water absorption and retention can be improved by grafting PMVEMA-PEG to the surface of ECF bleached kraft pulp hardwood and softwood fibers via microwave initiated crosslinking. The cross

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9

Wang, Sheng. "Phosphorus-Containing Polymers, Their Blends, and Hybrid Nanocomposites with Poly(Hydroxy Ether), Metal Chlorides, and Silica Colloids." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/26789.

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Phosphorus-containing high performance polymers have been extensively studied during the last 10 years. These materials are of interest for a variety of optical and fire resistant properties, as well as for their ability to complex with the inorganic salts. This dissertation has focused on the nature of the phosphonyl group interactions with hydroxyl containing polymers, such as the poly(hydroxy ether)s. These may be considered linear models of epoxy resins and are also closely related to dimethacrylate (vinyl ester) matrix resins that are important for composite systems. It has been shown tha

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10

Profili, Jacopo. "Dépôt de couches minces nanocomposites par nébulisation d'une suspension colloïdale dans une décharge de Townsend à la pression atmosphérique." Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30131/document.

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Ce travail de thèse porte sur le développement de nouvelles couches minces nanocomposites par plasma froid à la pression atmosphérique. L'objectif principal est d'améliorer la compréhension des mécanismes physico-chimiques régissant ce procédé de synthèse. La stratégie adoptée est basée sur l'injection via un aérosol d'une suspension colloïdale de nanoparticules d'oxyde métallique dans une décharge à barrière diélectrique opérant en atmosphère d'azote (décharge de Townsend). Dans un premier temps, la synthèse est réalisée de manière séquentielle, la fabrication d'une matrice inorganique de sil

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11

Wang, Mu. "On the electric-field-induced responses of charged spherical colloids in uncharged hydrogels and the anomalous viscosity of polymer-nanocomposite melts." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21951.

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Colloidal particles dispersed in complex fluids such as hydrogels and polymer melts are important because nano-scale inclusions often impart unexpected and commercially attractive changes in the dispersed phase. Future development of these colloidal composites, and diagnostics to characterize their microstructure, demand a sound understanding of micro-scale dynamics. Accordingly, this thesis addresses (i) the steady and dynamic electric-field-induced displacements of spherical colloidal particles embedded in hydrogels, and (ii) the anomalous viscosity reduction of polymer-nanocomposite melts.

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12

Roux, Rémi. "Élaboration d'assemblages colloïdaux à partir de nanoparticules de poly(acide lactique) et de chitosane." Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10088/document.

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Les assemblages colloïdaux représentent une nouvelle piste très prometteuse dans le domaine de l'ingénierie tissulaire. Idéalement, ce type d'assemblage permet l'obtention de matériaux injectables et gélifiants sur le site lésionnel, favorisant par la suite le développement de néo-tissus viables. Ce travail porte sur la formation de tels assemblages à base de chitosane et de poly(acide lactique) (PLA). Deux types d'assemblages ont été conçus et étudiés dans ce travail. Dans une première approche, le mélange de particules anioniques de poly (acide lactique) (PLA) avec du chitosane en solution f

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13

Hung-Wen, Lin, and 林宏文. "The Rheological Behaviors Research and Application of Nanocomposite Colloid Dispersion." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/82143627116803841724.

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博士<br>國防大學中正理工學院<br>國防科學研究所<br>96<br>Dispersion degree strongly influences the rheological properties of nanoparticles containing suspension and, as a consequence, the quality of the deposited film. Furthermore, their applications will be rigorously restricted if the bad dispersion can not be solved effectively. Therefore, knowing the dispersion degree of pastes before its application is inevitable. In this study, the dispersion of nanoparticles utilizing the physical and/or the chemical method within several suspension systems were investigated. The great emphasis is put on the effect of disp

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14

Zarrin, Tahira. "Effects of Shape and Size of Gold Nanoparticles on the Properties of Colloid and Nanocomposite." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-776.

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For more than a decade nanomaterials have attained huge attraction owing to the exceptionally different and excellent characteristics as compared to their bulk form. In the present research, we focus on understanding the properties and performance of nanocomposites in solid and liquid states. There are three major areas involved in this thesis research. Firstly, we will identify effective methods or techniques to evaluate nanomaterials. Conventional and non-conventional techniques will be implied. The second part is to study the interfacial reactions between nanoparticles (NPs) and fluid molec

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15

紀晴陪. "Synthesis And Properties of WPU/SR-444/SAPSH/Colloid Al2O3 Organic/Inorganic Nanocomposite Materials." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/95017960840703750925.

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碩士<br>國立高雄師範大學<br>化學系<br>96<br>A novel organic/inorganic nanocomposite with highly transparent, heat resistance and mechanical properties was prepared by sol-gel process. In this experiment, the organic matrix was synthesized by the condensation reaction of waterborne polyurethane (WPU), acrylate monomer (SR-444) and coupling agent (SAPSH). Then this complex was hydrolysis in acid solution at 70~75 ℃ to form a silanol derivative which could successfully bond with inorganic anti-static reagent (colloid Al2O3). Finally, the WPU/SR-444/SAPSH/Al2O3 organic/inorganic nanocomposite was crosslinked

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16

Profili, Jacopo. "Dépôt de couches minces nanocomposites par nébulisation d'une suspension colloïdale dans une décharge de Townsend à la pression atmosphérique = Nebulization of colloidal suspensions for the deposition of nanocomposite thin film by atmos-pheric pressure Townsend discharge." Thèse, 2017. http://hdl.handle.net/1866/18482.

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Ce travail de thèse porte sur le développement de nouvelles couches minces nanocomposites par plasma froid à la pression atmosphérique. L’objectif principal est d’améliorer la compréhension des mécanismes physico-chimiques régissant ce procédé de synthèse. La stratégie adoptée est basée sur l’injection via un aérosol d’une suspension colloïdale de nanoparticules d’oxyde métallique dans une décharge à barrière diélectrique opérant en atmosphère d’azote (décharge de Townsend). Dans un premier temps, la synthèse est réalisée de manière séquentielle, la fabrication d’une matrice inorganique de

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17

Sun, Dazhi. "Colloidal Manipulation of Nanostructures: Stable Dispersion and Self-assembly." Thesis, 2009. http://hdl.handle.net/1969.1/150919.

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This dissertation work addresses two important aspects of nanotechnology - stable dispersion and self-assembly of colloidal nanostructures. Three distinctly different types of nano-scaled materials have been studied: 0-dimensional ZnO quantum dots (QDs), 1-dimensional carbon nanotubes (CNTs), and 2-dimensional alpha-zirconium phosphate (ZrP) nanoplatelets. Specifically, highly crystalline ZrP layered compounds with differences in diameters have been synthesized and fully exfoliated into monolayer platelets with uniform thickness, followed by their self-assembly into liquid crystalline structur

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18

Kandar, Ajoy Kumar. "Slow Dynamics In Complex Fluids : Confined Polymers And Soft Colloids." Thesis, 2012. https://etd.iisc.ac.in/handle/2005/2459.

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The thesis describes the study of slow dynamics of confined polymers and soft colloids. We study the finite size effect on the dynamics of glassy polymers using newly developed interfacial microrheology technique. Systematic measurement have been performed to address the issue of reduction of glass transition under confinements. Slow and heterogeneous dynamics are the underlined observed behavior for dynamics in confined glassy polymers. The slow relaxation dynamics and dynamical heterogeneity in polymer grafted nanoparticles (PGNPs) systems were studied using advanced X - ray photon corre

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19

Kandar, Ajoy Kumar. "Slow Dynamics In Complex Fluids : Confined Polymers And Soft Colloids." Thesis, 2012. http://hdl.handle.net/2005/2459.

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The thesis describes the study of slow dynamics of confined polymers and soft colloids. We study the finite size effect on the dynamics of glassy polymers using newly developed interfacial microrheology technique. Systematic measurement have been performed to address the issue of reduction of glass transition under confinements. Slow and heterogeneous dynamics are the underlined observed behavior for dynamics in confined glassy polymers. The slow relaxation dynamics and dynamical heterogeneity in polymer grafted nanoparticles (PGNPs) systems were studied using advanced X - ray photon correlati

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20

Suyal, Ganesh [Verfasser]. "Synthesis of nanocomposite glass-like films containing semiconductor nanocrystals and noble bimetallic colloids by sol-gel route and their characterisation / von Ganesh Suyal." 2002. http://d-nb.info/964814498/34.

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21

Bhaskar, Srilakshmi P. "A Study on Digestive Ripening Mediated Size and Structure Control in Nanoparticles Prepared by Solvated Metal Atom Dispersion Method." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/2924.

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Recent advancements in nanotechnology and emerging applications of nanomaterials in various fields have stimulated interest in fundamental scientific research dealing with the size and structure controlled synthesis of nanoparticles. The unique properties of nanoparticles are largely size dependent which could be tuned further by varying shape, structure, and surface properties, etc. The preparation of monodisperse nanoparticles is desirable for many applications due to better control over properties and higher performance compared to polydispersity nanoparticles. There are several methods for

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22

Bhaskar, Srilakshmi P. "A Study on Digestive Ripening Mediated Size and Structure Control in Nanoparticles Prepared by Solvated Metal Atom Dispersion Method." Thesis, 2016. http://hdl.handle.net/2005/2924.

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Recent advancements in nanotechnology and emerging applications of nanomaterials in various fields have stimulated interest in fundamental scientific research dealing with the size and structure controlled synthesis of nanoparticles. The unique properties of nanoparticles are largely size dependent which could be tuned further by varying shape, structure, and surface properties, etc. The preparation of monodisperse nanoparticles is desirable for many applications due to better control over properties and higher performance compared to polydispersity nanoparticles. There are several methods for

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