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Dissertations / Theses on the topic 'Silica polymerization'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Yang, Minghua. "Silica supported metallocene catalysts and olefin polymerization." Thesis, University of Manchester, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488443.

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2

Constable, Andrew N. "Functionalization of silica micro-capillaries and silica nanoparticles via polymber brushes." Akron, OH : University of Akron, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1221746490.

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Dissertation (Ph. D.)--University of Akron, Dept. of Polymer Science, 2008.<br>"December, 2008." Title from electronic dissertation title page (viewed 12/28/2008) Advisor, Roderic P. Quirk; Committee members, Scott Collins, Ali Dhinojwala, Li Jia, Mark D. Soucek; Department Chair, Ali Dhinojwala; Dean of the College, Stephen Z. D. Cheng; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.

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3

Kaßner, Lysann, Kevin Nagel, R. E. Grützner, Marcus Korb, Tobias Rüffer, Heinrich Lang, and Stefan Spange. "Polyamide 6/silica hybrid materials by a coupled polymerization reaction." Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-197628.

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Polyamide 6/SiO2 hybrid materials were produced by a coupled polymerization reaction of three monomeric components namely 1,1′,1′′,1′′′-silanetetrayltetrakis-(azepan-2-one) (Si(ε-CL)4), 6-aminocaproic acid (ε-ACA) and ε-caprolactam (ε-CL) within one process. Si(ε-CL)4 together with ε-ACA has been found suitable as a precursor monomer for the silica and PA6 components. The accurate adjustment of the molar ratio of both components, as well as the combination of the overall process for producing the polyamide 6/SiO2 hybrid material with the hydrolytic ring opening polymerization of ε-caprolactam

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4

堀内, 達郎, and Tatsuro HORIUCHI. "Effects of amide additives on polymerization of silica under acidic conditions." Elsevier, 1992. http://hdl.handle.net/2237/16357.

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5

McKittrick, Michael W. "Single-Site Olefin Polymerization Catalysts via the Molecular Design of Porous Silica." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6871.

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The major goals of this work were to: develop a new methodology for the preparation of site-isolated catalytic sites on a silica surface, prepare the first truly single-site supported metallocene/CGC polymerization catalyst, and develop structure-reactivity relationships for these new systems. To synthesize these novel catalysts, the approach taken was to develop a protocol which allows for the synthesis of an aminosilica material with isolated, uniform amine sites. This patterned aminosilica was then used as a scaffold to support a constrained geometry catalyst. These functionalizations occ

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6

Liu, Yi. "Mesoporous silica/polymer nanocomposites." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31739.

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Thesis (Ph.D)--Polymer, Textile and Fiber Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: Jacob. Karl; Committee Member: Griffin. Anselm; Committee Member: Tannenbaum. Rina; Committee Member: Thio. Yonathan S; Committee Member: Yao. Donggang. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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7

Cheng, Xu. "The Use of Functionalized Zirconocenes as Precursors to Silica-Supported Zirconocene Olefin Polymerization Catalysts." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/30027.

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Deck and coworkers previously showed that Me3Si substituents adjacent to group 4 metallocene dichlorides (M = Ti, Zr, Hf) are converted to corresponding BrMe2Si groups using BBr3, and that these BrMe2Si substituents are highly reactive to nucleophilic reagents such as water. The high reactivity of the Si-Br bonds suggested that these substituents could react with hydroxyl groups on the surface of partially dehydroxylated silica, forming covalently immobilized metallocene catalysts. This dissertation concerns the synthesis of electrophile-functionalized zirconocene dihalide complexes and the u

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8

Qiao, Xiaoguang. "Synthesis of silica-polymer hybrid particles via controlled radical polymerization in aqueous dispersed media." Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10332/document.

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Des polymères à base de méthacrylate de poly(oxyde d'éthylène) (PEOMA) avec des chaînes pendantes PEO (Mn = 300 ou 950 g mol-1) ou des copolymères de PEOMA300 et d'acide méthacrylique (AMA) ont été synthétisés par polymérisation radicalaire contrôlée par les nitroxydes en utilisant une alkoxyamine (BlocBuilder®) comme amorceur en présence de SG1 et d'une faible quantité de styrène. Les copolymères à base de PEOMA300 et d'AMA sont thermo- et pH-sensibles. Les deux types de macroalkoxyamines ont été utilisés pour amorcer la copolymérisation en émulsion du méthacrylate de n-butyle et du styrène e

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9

Fu, Anqiu. "Effect of the silica support on the reactivity and polymerization activity of organochromium complexes." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6159.

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The effect of the support in heterogeneous catalysis is very important but often poorly understood. The reaction of tetraneopentylchromium(IV) with Sylopol 952, a silica gel used industrially as a carrier for alpha-olefin polymerization catalysts, has been investigated and compared with the previously reported reaction on Aerosil 200, a fumed silica often used to model catalyst supports. Grafting, thermolysis, and metathetical exchange reactions of chromium(IV) neopentylidenes were found to be the same on either Aerosil 200 or Sylopol 952. However, reactivity of the grafted organochromium frag

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10

Hicks, Jason Christopher. "Organic/inorganic hybrid amine and sulfonic acid tethered silica materials synthesis, characterization and application /." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/26583.

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Thesis (Ph.D)--Chemical Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Jones, Christopher; Committee Member: Koros, William; Committee Member: Lyon, Andrew; Committee Member: Nair, Sankar; Committee Member: Weck, Marcus. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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11

Nguyen, Joseph Vu. "Design, synthesis, and optimization of recoverable and recyclable silica-immobilized atom transfer radical polymerization catalysts." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6860.

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Despite the growing interest in heterogeneous polymerization catalysis, the majority of the polymerization catalysts used industrially are single-use entities that are left in the polymer product. Recoverable and recyclable polymerization catalysts have not reached the industrial utility of single-use catalysts because the catalyst and product separation have not become economical. The successful development of recyclable transition metal polymerization catalysts must take a rational design approach, hence academic and industrial researchers need to further expand the fundamental science and

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12

Nguyen, Joseph Vu. "Design, synthesis, and optimization of recoverable and recyclable silica-immobilized atom transfer radical polymerization catalystal." Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-03072005-105351/unrestricted/nguyen%5Fjoseph%5Fv%5F200505%5Fphd.pdf.

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Thesis (Ph. D.)--Chemical and Biomolecular Engineering, Georgia Institute of Technology, 2005.<br>Jones, Christopher, Committee Chair ; Eckert, Charles, Committee Member ; Schork, Joseph, Committee Member ; Weck, Marcus, Committee Member ; Zhang, John, Committee Member. Includes bibliographical references.

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13

Greco, Paula Palmeira. "Metalocenos suportados para a polimerização de etileno: efeito do uso de espaçadores na superfície da sílica." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/15645.

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A homopolimerização de etileno foi investigada utilizando o catalisador (nBuCp)2ZrCl2 suportado em sílicas modificadas quimicamente com diferentes espaçadores. Dentre eles, foram utilizados Me3SiCl, Me2HSiCl, Ph3SiCl, polimetilhidrossiloxano (PMHS), GeCl4, SnCl4 ou PbCl2. As interações organossilano-sílica, zirconoceno-silanos suportados e zirconoceno suportadosilanos suportados foram estudadas através do método teórico ICONC. Os teores de metal foram determinados por Espectrometria de retroespalhamento Rutherford (RBS), enquanto a modificação química da superfície da sílica foi monitorado por

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14

Drese, Jeffrey Hayden. "The design, synthesis, and characterization of aminosilica adsorbents for CO2 capture from dilute sources." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/42829.

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The use of novel hyperbranched aminosilica (HAS) materials created through the ring-opening polymerization of aziridine from mesoporous silica supports was proposed for the adsorption of CO2 from dilute sources. The limits of the adsorptive performance of these adsorbents were investigated via the preparation of sets of materials with a range of aminopolymer loadings on several different silica supports with different pore space characteristics. Relationships were determined between the materials' amine loadings and the CO2 adsorption performance. Adsorbents with substantial remaining pore vol

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15

Geng, Yan. "Emulsion Polymerized Monodisperse Silica-Polymer Core-Shell Nanoparticles for Antireflective Coatings." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1377189656.

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16

Kir, Onur [Verfasser], Wolfgang H. [Akademischer Betreuer] Binder, and Guido [Akademischer Betreuer] Kickelbick. "Surface initiated polymerization of isoprene from silica nano- and glass particles via living anionic and controlled radical polymerization techniques / Onur Kir. Betreuer: Wolfgang H. Binder ; Guido Kickelbick." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2013. http://d-nb.info/1050977734/34.

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17

Möhrke, Julia. "Kinetik der konventionellen radikalischen und der RAFT-Polymerisation an Nanopartikeloberflächen." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2016. http://hdl.handle.net/11858/00-1735-0000-0028-87D3-9.

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Diese Arbeit gibt neue Einblicke in die kinetischen und mechanistischen Aspekte der konventionellen radikalischen und der Reversible-Addition–Fragmentation-chain-Transfer- (RAFT-)Polymerisation von der Oberfläche von Silica-Nanopartikeln. Die Terminierungskinetik der oberflächeninitiierten Polymerisation von n-Butylmethacrylat (n-BMA) wurde mit Hilfe der Single-pulse–pulsed-laser-Polymerisation (SP–PLP) in Kombination mit der Elektronenspinresonanzspektroskopie (ESR-Spektroskopie) analysiert. Die Polymerisation wurde dabei durch den neu entwickelten oberflächengebundenen Photoinitiator 2,2-Dim

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18

TURNER, ROBERT HAINES. "MOLECULAR STRUCTURE OF INTERFACES FORMED WITH PLASMA POLYMERIZED SILICA-LIKE PRIMER FILMS." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin997298644.

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19

Nitschke, Annika. "Investigation of Polymer-Filler Interactions Using Functionalized Nanoparticles." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://hdl.handle.net/21.11130/00-1735-0000-0005-1363-6.

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20

Sauter, Dominique. "Développement de nouveaux supports activateurs solides pour la polymérisation des oléfines." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1249.

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21

Schmidt, Sonja. "Tuning Mesoporous Silica Structures via RAFT Polymers: From Multiblock Copolymers as new Templates to Surface Modification." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E379-C.

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22

Simerly, Thomas Max. "Immobilized Bis-Indenyl Ligands for Stable and Cost-Effective Metallocene Catalysts of Hydrogenation and Polymerization Reactions." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etd/1473.

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Reactions of catalytic hydrogenations and polymerizations are widely used in industry for manufacture of fine chemicals, pharmaceuticals, and plastics. Homogeneous catalysts for the processes that have low stability and their separation is difficult. Therefore, the development of new highly active and stable catalysts for hydrogenations and polymerizations is a necessity. The objective of this research was the development of a strategy for immobilization of heterogeneous metallocene catalysts. First, a methodology of immobilization of bis-indenyl ligands on the surface of mesoporous silica gel

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23

Bui, Nhat Thi Hong. "Polyhydroxyl and Polyphosphorylcholine functionalized Silica for Hydrophilic interaction liquid Chromatography- Synthesis, characterization and application." Doctoral thesis, Umeå universitet, Kemiska institutionen, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-60600.

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This thesis focuses on the development of new stationary phases for use in hydrophilic interaction liquid chromatography using TRIS-based and phosphorylcholine typed monomers and porous silica particles as starting substrates. In this thesis, several ways of polymerizing highly hydrophilic monomers onto pore surfaces of silica supports are described, based on several “grafting from” schemes. “Controlled/living” radical polymerizations including atom transfer radical polymerization (ATRP) and iniferter-mediated polymerization in conjunction with conventional free radical polymerization are dem

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24

Hubert, Céline. "Ingénierie de particules et assemblages à l’échelle colloïdale." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0185/document.

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La synthèse et l’assemblage de particules colloïdales de morphologie et de fonctionnalité originale permet d’envisager la fabrication de matériaux aux propriétés électromagnétiques innovantes. Au cours de ce travail, nous nous sommes intéressés à la synthèse de colloïdes hybrides silice/polystyrène par un processus de polymérisation en émulsion du styrène ensemencé par des germes de silice préalablement fonctionnalisés en surface par des groupements méthacrylate. Ces particules hybrides, composées d’une particule centrale de silice entourée d’un nombre contrôlé de nodules de polystyrène, ont é

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25

Junges, Fernando. "Novel catalyst systems based on Ni(II), Ti(IV), and Cr(III) complexes for oligo-and polymerization of ethylene." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2005. http://hdl.handle.net/10183/6358.

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Le complexe de Brookhart Ni(α-diimine)Cl2 (1) (α-diimine = 1,4-bis(2,6- diisopropylphenyl)-acenaphthenediimine) a été caractérisé après impregnation sur silice (S1) et a silices modifié avec MAO (4,0, 8,0 et 23,0 wt.% Al/SiO2 appelé S2, S3 et S4, respectivement). Le traitement de ces composés greffé avec MAO produit des catalyseurs actifs pour la polymérisation de l'éthylène. Un haute activité catalytique a été obtenue en utilisant le système supporté 1/S3 (196 kg de PE/mol[Ni].h.atm; toluene, Al/Ni = 1000, 30ºC, 60 min et pression atmosphérique d'éthylène). Les effets des conditions de la pol

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26

Yammine, Elham. "Synthèse de nanoparticules de latex de polystyrène à patchs magnétiques." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0397.

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Les particules à patchs magnétiques ont pris une importance toute particulière dans l’étude des assemblages vers de nouvelles structures colloïdales. L’état de l’art nous a montré que la majorité des systèmes synthétisés et étudiés concerne des particules à un seul patch magnétique limitant ainsi les possibilités de structures accessibles par assemblage. Notre objectif s’est donc centré sur l’obtention de nanoparticules sphériques de polystyrène (PS) porteuses de plusieurs nanoparticules superparamagnétiques à leur périphérie. La voie multi-étapes retenue a consisté à préparer par polymérisati

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27

Louis, Chakkalakal Golda [Verfasser]. "Homopolymer and Block Copolymer Composites Based on Silica Nanoparticles Coated with Polymeric Single or Double Shells Synthesized by Atom Transfer Radical Polymerization / Golda Louis Chakkalakal." Kiel : Universitätsbibliothek Kiel, 2012. http://d-nb.info/1026043026/34.

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28

Rotzoll, Robert [Verfasser], Philipp [Akademischer Betreuer] Vana, and Konrad [Akademischer Betreuer] Samwer. "Tailored Silica Polymer Composites and ABA Type Copolymers: Polymerization Kinetics, Structural Design, and Mechanical Properties / Robert Rotzoll. Gutachter: Philipp Vana ; Konrad Samwer. Betreuer: Philipp Vana." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2011. http://d-nb.info/1043992995/34.

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29

Zhou, Xu. "Synthesis and Characterization of Nanoporous Copolymers with Potential Gas Storage Applications." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/51669.

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Nanoporous organic polymers, including hypercrosslinked polymers (HCPs), covalent organic frameworks (COFs), polymers of intrinsic microporosity (PIMs), and conjugated microporous polymers (CMPs) etc., are considered good candidates for potential gas storage and gas separation applications. Porosities and surface areas of a series of semirigid alternating copolymers, which contained tert-butyl carboxylate-functionalized stilbene or tert-butyl carboxylate-functionalized styrene, and maleic anhydride or tert-butyl carboxylate-functionalized phenyl maleimide, were investigated using nitrogen sor

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30

Ptacek, Saija Maria. "Funktionalisierte Alkylmethacrylat-Blockcopolymere als Template zur Darstellung geordneter Silica-Strukturen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-26524.

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Die vorliegende Arbeit befasst sich mit der Synthese von Alkylmethacrylat-Blockcopolymeren, der Charakterisierung ihrer chemischen Struktur und ihres Mikrophasenseparationsverhaltens sowohl im Festkörper als auch in dünnen Filmen. Grundlegendes Ziel war die Einführung funktioneller Gruppen in ein Alkylmethacrylat-Blockcopolymersystem. Eine erste Einschätzung der Effektivität von funktionalisierten Diblockcopolymeren als Template für die Darstellung geordneter Silica-Strukturen über Sol-Gel-Reaktionen von Alkoxysilanen wurde angestrebt. Es wurde das Diblockcopolymersystem Poly(pentylmetacrylat-

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31

Long, Wei. "Designing immobilized catalysts for chemical transformations: new platforms to tune the accessibility of active sites." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/49017.

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Chemical catalysts are divided into two traditional categories: homogeneous and heterogeneous catalysts. Although homogeneous (molecular) catalysts tend to have high activity and selectivity, their wide application is hampered by the difficulties in catalyst separation. In contrast, the vast majority of industrial scale catalysts are heterogeneous catalysts based on solid materials. Immobilized catalysts, combining the advantages of homogeneous and heterogeneous catalysts, have developed into an important field in catalysis research. This dissertation presents synthesis, characterization and e

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32

Mariot, David. "Nouveau procédé de modification de silice pour le renforcement d'élastomères silicones." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2011. http://www.theses.fr/2011ENCM0013.

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L'objectif de ces travaux était de mettre au point une nouvelle voie de modification de la silice comme renfort d'élastomères silicones. La polymérisation par ouverture de cyclosiloxanes anionique (POCA) amorcée directement à partir de la silice dispersée en phase aqueuse a été réalisée. Les caractéristiques des silices utilisées dans cette étude ainsi que leur comportement en dispersion aqueuse ont tout d'abord été étudiés. La silice affiche des groupements silanolates à la surface de la silice pour des pH supérieurs au point de charge nulle. A pH 7, ces groupements silanolates en surface son

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33

Cuoq, Fabrice. "Fonctionnalisation d’un nouveau matériau pour le traitement de l’eau potable par floculation lestée." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4337.

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Le but de ce projet a été d'améliorer un procédé de clarification développé par VEOLIA Environnement : l'Actiflo®. L'Actfilo® est basé sur l'ajout de microsable lors de l'étape de floculation afin d'augmenter les vitesses de décantation. Toutefois, une importante quantité de polymère est continuellement ajoutée au procédé, et des résiduels de ce dernier peuvent être rencontrés dans les eaux décantées. Notre travail a été de fonctionnaliser (i.e. greffer) le microsable avec un polymère floculant afin de pouvoir recycler en continu le matériau hybride par hydrocyclonage. La fonctionnalisation pa

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34

Persson, Per. "Strategies for cellulose fiber modification." Doctoral thesis, KTH, Fibre and Polymer Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3730.

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<p>This thesis describes strategies for and examples ofcellulose fiber modification.The ability of an engineered biocatalyst, acellulose-binding module fused to the<i>Candida antarctica</i>lipase B, to catalyze ring-openingpolymerization of e-caprolactone in close proximity tocellulose fiber surfaces was explored. The water content in thesystem was found to regulate the polymer molecular weight,whereas the temperature primarily influenced the reaction rate.The hydrophobicity of the cellulose sample increased as aresult of the presence of surface-deposited polyester.</p><p>A two-step enzymatic

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35

Freitas, Alan John Duarte de. "Preparação e estudo de reatividade de sistemas catalíticos, a base de zirconocenos, frente à reação de homo- e copolimerização de eteno." Universidade Federal de Alagoas, 2007. http://repositorio.ufal.br/handle/riufal/1060.

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Catalytic systems based on zirconoces which are able to polymerize ethene have been studied. Structural modifications on the basic catalytic precursor, diphenylmethylidene(η5- cyclopentadienyl)(η5-9-fluorenyl) zirconium dichloride (5a) have been carried out. The catalytic precursors 5a and bis(para-fluorophenyl)methylidene(η5-cyclopentadienyl)(η5-9- fluorenyl)zirconium dichloride (5b) were synthesized, as well the pre-ligand (1- cyclopentadienyl)(9-fluorenyl)[1,1-bis(para-methoxyphenyl)]methane (3c). Complex Ph2C(Cp)(Flu)ZrCl2 was supported on silica by two different techni

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36

Desert, Anthony. "Colloïdes hybrides silice/polystyrène de morphologie contrôlée." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2011. http://tel.archives-ouvertes.fr/tel-00949569.

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Les molécules colloïdales peuvent être décrites comme des agrégats robustes de particules sphériques prenant la forme de certaines molécules simples. La préparation de suspensions de molécules colloïdales est étudiée afin d'obtenir de hauts rendements en morphologie et des distributions étroites en taille des objets, conditions indispensables pour envisager de futures applications comme leur assemblage et l'élaboration de matériaux. La stratégie repose sur l'introduction de germes de silice fonctionnalisés dans une polymérisation en émulsion du styrène, menant à la nucléation-croissance d'un n

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37

Bonnevide, Marine. "Nanocomposites élastomère-nanoparticules de silice greffées : de la synthèse aux mécanismes de dispersion." Electronic Thesis or Diss., Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0354.

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L’ajout de charges nanométriques dans une matrice polymère permet d’améliorer les propriétés d’usage des matériaux. L’optimisation du renforcement des nanocomposites est liée à l’état de dispersion des charges dans la matrice ainsi qu’aux interactions charge/charge et charge/polymère. Dans l’industrie du pneu, ces paramètres ont fait l’objet de nombreuses recherches dans le but de maîtriser le renforcement de matrices élastomères par des particules de silice. Ainsi à l’échelle industrielle, on utilise des agents de couplage, comme le bis(triéthoxysilyl)propyl tétrasulfide ou des polymères fonc

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38

Huang, Chun. "An optical emission study on DC plasma polymerization /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p1418031.

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39

Tsuchihara, Kenji. "Polymerization and Polymer Properties of Silicon- and Fluorine-Containing Acetylenes." Kyoto University, 1992. http://hdl.handle.net/2433/168754.

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本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである<br>Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(工学)<br>甲第5109号<br>工博第1230号<br>新制||工||868(附属図書館)<br>UT51-92-J156<br>京都大学大学院工学研究科高分子化学専攻<br>(主査)教授東村敏延, 教授今西幸男, 教授山岡仁史<br>学位規則第4条第1項該当

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Wu, Lei Verfasser], Alexander [Akademischer Betreuer] Böker, and Andrij Z. [Akademischer Betreuer] [Pich. "Surface-initiated controlled radical polymerizations from silica nanoparticles / Lei Wu ; Alexander Böker, Andrij Pich." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1130590585/34.

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Wu, Lei [Verfasser], Alexander Akademischer Betreuer] Böker, and Andrij Z. [Akademischer Betreuer] [Pich. "Surface-initiated controlled radical polymerizations from silica nanoparticles / Lei Wu ; Alexander Böker, Andrij Pich." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1130590585/34.

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LEPETIT, POURCELOT CHRISTINE. "Mise au point de nouveaux catalyseurs de dimerisation du propylene a base de complexes supportes du nickel : controle de la stabilite et de la selectivite par effet de ligands : influence electronique sterique et mecanistique." Paris 6, 1987. http://www.theses.fr/1987PA066489.

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De, Camargo Chaparro Thaissa. "Synthesis of nanocomposites with anisotropic properties by controlled radical emulsion polymerization Lorena." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1045/document.

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L'objectif de ce travail de thèse est de préparer des latex nanocomposites à base d’argile, la Laponite RD, en émulsion aqueuse, à l'aide de la polymérisation radicalaire contrôlée par transfert de chaîne réversible par addition-fragmentation (RAFT). Les plaquettes de Laponite ont été choisies comme charge inorganique surtout pour leur anisotropie de forme, ce qui pourrait permettre l’elaboration de films nanostructurés, mais aussi pour leurs propriétés thermiques et mécaniques, leur pureté chimique élevée et la distribution uniforme en taille des plaquettes. Des polymères hydrophiles (macroRA

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Kowatz, Thomas. "Mechanisms of silicate polymerisation, carbohydrate epimerisation and metalloprotease inhibition." Thesis, St Andrews, 2009. http://hdl.handle.net/10023/771.

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Sacristán, Benito Marta. "Soybean oil based copolymers containing silicon, boron or phosphorus: polymerization, characterization and fire retardance properties." Doctoral thesis, Universitat Rovira i Virgili, 2010. http://hdl.handle.net/10803/9040.

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Introducción y antecedentes <br/>El concepto de desarrollo sostenible surgió como idea principal tras la reunión de la comisión Brundtland en 1987. Esta reunión fue organizada por Naciones Unidas con el fin de tratar el deterioro del medio ambiente, originado por el desarrollo descontrolado de la humanidad. El desarrollo sostenible fue definido como un avance social y económico que asegure una vida sana y productiva al ser humano, pero que no comprometa las posibilidades de desarrollo de las generaciones venideras. Entre las conclusiones alcanzadas, se resaltó la necesitad de disponer de una m

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Kaßner, Lysann. "Stickstoffhaltige Monomere zur Herstellung von Hybridmaterialien." Doctoral thesis, Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-171321.

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In der vorliegenden Arbeit wurden stickstoffhaltige Monomere ausgehend von aromatischen Aminen oder Lactamen durch Umsetzung mit Chlorsilanen synthetisiert. Die so erhaltenen Derivate wurden mit Hilfe spektroskopischer und thermischer Analysenmethoden umfassend charakterisiert. Auf Basis der stickstoffhaltigen Monomere wurden über unterschiedliche Synthesestrategien organisch-anorganische, nanostrukturierte Hybridmaterialien hergestellt. Durch die thermisch induzierte Zwillingspolymerisation der Monomere 2,2‘-Spirobi[3,4-dihydro-1H-1,3,2-benzodiazasilin] und 1,1’,4,4‘-Tetrahydro-2,2‘-spirobi[b

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Weißhuhn, J., T. Mark, M. Martin, P. Müller, A. Seifert, and S. Spange. "Ternary organic–inorganic nanostructured hybrid materials by simultaneous twin polymerization." Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-220068.

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The acid and base catalyzed simultaneous twin polymerization (STP) of various 2,2′-disubstituted 4H-1,3,2-benzodioxasiline derivatives 2a–d with 2,2′-spirobi[4H-1,3,2-benzodioxasiline] (1) are presented in this paper. The products are nanostructured ternary organic–inorganic hybrid materials consisting of a cross-linked organic polymer, silica and a disubstituted polysiloxane. It can be demonstrated whether and in which extent the copolymerization of the two inorganic fragments of 1 and 2 takes place among the STP and how the molar ratio of the two components determines the structure formation

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Kitschke, Philipp. "Experimental and theoretical studies on germanium-containing precursors for twin polymerization." Doctoral thesis, Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-205443.

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Im Fokus dieser Arbeit standen zwei Ziele. Zum einem war es Forschungsgegenstand, dass Konzept der Zwillingspolymerisation auf germaniumhaltige, molekulare Vorstufen wie zum Beispiel Germylene, spirozyklische Germaniumverbindungen und molekulare Germanate zu erweitern und somit organisch-anorganische Komposite beziehungsweise Hybridmaterialien darzustellen. Dazu wurden neuartige Germaniumalkoxide auf der Basis von Benzylalkoholaten, Salicylalkoholaten sowie Benzylthiolaten synthetisiert, charakterisiert und auf ihre Fähigkeit Komposite beziehungsweise Hybridmaterialien über den Prozess der Zwi

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Silva, Rafael Caetano Jardim Pinto da. "Síntese e caracterização de nanocompósitos do tipo polímero/silicatos lamelares com propriedades anisotrópicas via polimerização RAFT em emulsão." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/97/97136/tde-01022016-143552/.

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Nos últimos anos, a incorporação de partículas inorgânicas em uma matriz polimérica com a finalidade de se obter sistemas híbridos orgânico/inorgânico utilizando diferentes técnicas de polimerização tem recebido grande atenção. Neste sentido, preservar e controlar as propriedades físico-químicas das partículas inorgânicas torna-se essencial para manter a integridade destas em nanoescala, bem como para obtenção de dispersões uniformes, magnificando os efeitos de reforço e demais ganhos de propriedades desejadas para a matriz polimérica. Quando se utiliza partículas inorgânicas anisotrópicas tai

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Eroglu, Damla. "Electrochemical Synthesis Of Poly(methylsilyne), And The Effect Of Silicon-based Preceramic Polymers On The Properties Of Polypropylene Based Composites." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609878/index.pdf.

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In the first part of this dissertation, poly(methylsilyne) was produced both in small and large-scales. In the small-scale, the aim was to synthesize the polymer by electrochemical polymerization of methyltrichlorosilane at a constant potential of -6 V supplied by batteries, using sodium dodecyl sulfate (SDS) as the supporting electrolyte. The polymer was characterized by 1H-NMR, FTIR, UV-Visible Spectroscopy and GPC in addition to its distinctive yellow color. The yellow color and the 1H-NMR, FTIR, UV-Visible and GPC results proved that poly(methylsilyne) was produced successfully in small-sc

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