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Tesi sul tema "RAFT"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Fleet, Reda. "RAFT mediated polysaccharide copolymers." Thesis, Link to the online version, 2006. http://hdl.handle.net/10019/1025.

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2

Suwattana, Siripan. "Biodegradable polymers via RAFT." Thesis, University of Leeds, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549765.

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This research has shown that biodegradable monomer (5,6-benzo-2- methylene-1,3-dioxepane) (BMOO) can be achieved. Also its homo-and-eo- polymerisation can be successfully realised via RAFT and ROP polymerisation techniques. BMOO was synthesised with the modification via the dehydrobrornination of 5,6-benzo-2-(bromomethyl)-1,3-dioxepane in a good yield (95% yields). The homopolymerisation of BMOO were designed to produce a target OP of 200 via living "polymerisation" and complete ring-opening polymerisation. A narrow POI (1.09) and an M n= 4,697 g mol' were observed after 24 hours for the react

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3

Antus, Joakim. "Reaching Consensus Using Raft." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-301332.

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This thesis project implements and evaluates log replication using the Raft consensus algorithm. Raft presents a new and easier to understand consensus protocol for log replication in a distributed system. This thesis aims to evaluate the correctness and robustness of Raft by implementing a scalable system that is easy to maintain and test for further development. This thesis gives an in-depth description of Raft as well as a detailed explanation of the implemented system together with an evaluation of the system performance with focus on correctness.

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4

Zong, Mengmeng. "RAFT polymerisation in supercritical CO2." Thesis, University of Nottingham, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.537644.

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5

Nozari, Samira. "Towards understanding RAFT aqueous heterophase polymerization." Phd thesis, Universität Potsdam, 2005. http://opus.kobv.de/ubp/volltexte/2005/580/.

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Reversible addition-fragmentation transfer (RAFT) was used as a controlling technique for studying the aqueous heterophase polymerization. The polymerization rates obtained by calorimetric investigation of ab initio emulsion polymerization of styrene revealed the strong influence of the type and combination of the RAFT agent and initiator on the polymerization rate and its profile. The studies in all-glass reactors on the evolution of the characteristic data such as average molecular weight, molecular weight distribution, and average particle size during the polymerization revealed the importa

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6

Conrad, Cathrin Sonja. "Polybutadien und Butadien enthaltende Copolymere mit gezielt eingebauten vulkanisierbaren Gruppen durch RAFT-Polymerisation." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2013. http://hdl.handle.net/11858/00-1735-0000-0022-5E9E-D.

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Die RAFT-Polymerisation ("Reversible Addition-Fragmentation Chain Transfer") ist eine radikalische Polymerisation, die auf dem Prinzip des degenerativen Kettentransfers basiert. Es können Polymere hergestellt werden, die eine niedrige Dispersität aufweisen und komplexe makromolekulare Strukturen ausbilden. Für die Funktionalisierung von Polymerketten bietet sich die RAFT-Polymerisation ebenfalls an, da idealerweise jede auf diese Art hergestellte Polymerkette eine RAFT-Einheit trägt und so eine vollständige Funktionalisierung gewährleistet ist. Im Fokus dieser Arbeit stand die Funktionalisieru

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7

Gemici, Hesna. "Water soluble polymers by RAFT polymerisation." Thesis, University of Leeds, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507717.

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8

Bray, Caroline. "Aqueous RAFT polymerisation of acrylamide monomers." Thesis, University of Warwick, 2018. http://wrap.warwick.ac.uk/111296/.

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The challenge of this project was to control the polymerisation of acrylamide monomers, particularly sodium 2-acrylamido-2-methylpropane sulfonate (Lubrizol trademark, AMPS®2405), via reversible addition-fragmentation chain transfer (RAFT) polymerisation in aqueous solution. AMPS® based polymers are employed in a wide range of applications (e.g. medical, paint, oil recovery and water treatment), and are typically obtained via conventional radical polymerisation. Here, the use of the RAFT process to control the polymerisation of AMPS®2405 was reported, and well-defined polymeric architectures w

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9

Elnakat, Hala. "Regulation of Folate Receptor Raft Recycling." University of Toledo Health Science Campus / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=mco1174569209.

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10

Pflughaupt, Robin L. "In pursuit of RAFT-functional polyethylene : exploration of a novel class of Sn-RAFT agents and the preparation and application of RAFT-functional polyethylene-like poly(ω-pentadecalactone)". Thesis, University of Warwick, 2014. http://wrap.warwick.ac.uk/64038/.

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This work explores the preparation of Reversible Addition-Fragmentation chain-Transfer (RAFT)-functional polyethylene (PE). Challenges in developing methods to control the polymerization of primary radicals and prepare functional polyethylene are significant. Modest control over ethylene polymerization demonstrated via F-RAFT polymerization inspired our interest in RAFT agent design and we envisaged that metallo-RAFT agents could present different reactivities towards primary radicals. Considering the challenge of attempting to develop chemistry for the controlled radical polymerization of pri

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11

Nguema, Edzang Ronald W. "Synthèse et caractérisation de polymères à propriétés rédox pour un contrôle des propriétés d'adhésion bactérienne." Thesis, Toulon, 2016. http://www.theses.fr/2016TOUL0006/document.

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En raison des propriétés redox réversibles du ferrocène et de son activité antibactérienne, les polymères à base de ferrocène sont intéressants pour synthétiser de nouveaux liants pour des revêtements anti-adhésifs bactériens. Cette étude rend compte de l’homopolymérisation et de la copolymérisation de monomères méthacryliques porteurs de groupes ferrocényles avec le méthacrylate de lauryle (LM). Le méthacrylate de méthylferrocène (FMMA) mais aussi quatre nouveaux monomères nommés méthacrylate de 2- ferrocénylméthoxyéthyle (FMOEMA), méthacrylate de 3-ferrocénylméthoxypropyle (FMOPMA), 4- ferro

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12

Peng, Wentao. "Binary Planet–Satellite Nanostructure Using RAFT Polymer." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://hdl.handle.net/21.11130/00-1735-0000-0005-144A-2.

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13

Banaco, Joana Filipa das Neves. "Encapsulação de nanopartículas anisotrópicas por polimerização RAFT." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/12265.

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Mestrado em Engenharia Química<br>Os avanços tecnológicos recentes têm vindo a gerar um enorme interesse em novos materiais, desafiando a comunidade científica a focarem a sua atenção no desenvolvimento de novos métodos de síntese para a produção, por exemplo, de nanocompósitos. O objetivo deste trabalho consistiu na otimização do procedimento de encapsulação de nanopartículas anisotrópicas (NPs) recorrendo à polimerização em emulsão e ao mecanismo de polimerização controlada por reações reversíveis de adição-fragmentação de um agente de transferência de cadeia (RAFT). No sentido de se obter

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14

Leswin, Joost Sieger Kaspar. "Particle Formation in RAFT-mediated Emulsion Polymerization." Thesis, The University of Sydney, 2007. http://hdl.handle.net/2123/2176.

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Particle formation in RAFT-mediated emulsion polymerization has been studied using reaction calorimetry. By measuring the heat flow during controlled feed ab-initio emulsion polymerization in the presence of amphipathic RAFT agents, particle formation by self-assembly of these species could be observed. Two different monomer systems, i.e. styrene and n-butyl acrylate, and various degrees of hydrophobicity of the initial macro-RAFT agents have been studied and compared. The different macro-RAFT agents were synthesized by first forming a hydrophilic block of poly(acrylic acid) that would later o

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15

Leswin, Joost Sieger Kaspar. "Particle Formation in RAFT-mediated Emulsion Polymerization." University of Sydney, 2007. http://hdl.handle.net/2123/2176.

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Doctor of Philosophy(PhD)<br>Particle formation in RAFT-mediated emulsion polymerization has been studied using reaction calorimetry. By measuring the heat flow during controlled feed ab-initio emulsion polymerization in the presence of amphipathic RAFT agents, particle formation by self-assembly of these species could be observed. Two different monomer systems, i.e. styrene and n-butyl acrylate, and various degrees of hydrophobicity of the initial macro-RAFT agents have been studied and compared. The different macro-RAFT agents were synthesized by first forming a hydrophilic block of poly(acr

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16

GIRETTI, Daniela. "MODELLING OF PILED RAFT FOUNDATIONS IN SAND." Doctoral thesis, Università degli studi di Ferrara, 2010. http://hdl.handle.net/11392/2389285.

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A piled raft is a composite foundation in which the piles are used as settlement reducers and they share, with the raft, the load from the superstructure. The applied load is transferred from the raft to the shallow soil and to the pile heads, and from the piles it is diffused through the shaft and the base to deeper soil. The pile–raft and pile–pile interactions represent the distinctive aspect of the piled raft foundations since they modify the load–bearing behaviour of each foundation component, compared to an analogous isolated element, thus determining the overall foundation behav

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17

CUNATI, DIANA. "Ruolo dei lipid raft nel metabolismo della proteina prionica." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2011. http://hdl.handle.net/10281/27001.

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The prion protein (PrP) is a GPI-anchored protein primarily concentrated in neuronal cells. Under certain conditions, the innocuous cellular form of this protein, PrPC, can convert into the lethal scrapie isoform, PrPSc, which can aggregate with other PrP molecules and exert its neurotoxic activity. The structure of PrPC consists of two domains: an N-terminal, glycosylated, flexible disordered domain which is capable of binding copper and a C-terminal α-helical domain. In contrast, PrPSc is enriched in β-sheet structures and characterized by its poor solubility in non-denaturing detergents,

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18

Nelson, Matthew D. "Lipid raft heterogeneity and dynamics in T lymphocytes." Click here for download, 2006. http://wwwlib.umi.com/cr/villanova/fullcit?p1432528.

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19

Fischer, Thorsten. "Modelling of lipid raft formation in cell membranes." Thesis, University of Nottingham, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.546490.

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20

Luheshi, Yousef Bashir. "The fatigue characteristics of precast concrete raft units." Thesis, University of Newcastle Upon Tyne, 1997. http://hdl.handle.net/10443/1582.

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This research project represents a continuation of the research programme into Precast Concrete Pavement Units, "P. C. P. U. ", which is based in the Department of Civil Engineering at the University of Newcastle upon Tyne. The units were referred to as raft units throughout the thesis which focused on the use of raft units as a full concrete paving system for aircraft parking, taxiway, and other low speed areas, at airports. The physical full scale test model was designed and constructed to represent the applied loading from one of the dual wheel legs of the design aircraft, a Boeing 727-200,

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21

Johnson, Fiona Ann. "The physico-chemical characterisation of alginate raft systems." Thesis, University College London (University of London), 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297175.

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22

Hann, Monika. "Raft microdomains in myelin : an in vitro investigation." Thesis, Open University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.446302.

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23

Jeffrey, J. G. "Synthesis and chemistry of hexaosmium carbonyl 'raft' clusters." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355865.

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24

Morse, Charlotte. "Block copolymer nanoparticles prepared by RAFT aqueous polymerisation." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/19014/.

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This thesis describes the reversible addition-fragmentation chain transfer (RAFT) polymerisation of block copolymer nanoparticles in water. Firstly, a water-soluble poly(glycerol monomethacrylate) (PGMA) macromolecular chain-transfer agent (macro-CTA) was synthesised via RAFT solution polymerisation in ethanol. The PGMA macro-CTA is then chain-extended with 2-hydroxypropyl methacrylate (HPMA) via RAFT aqueous dispersion polymerisation. Polymerisation-induced self-assembly (PISA) occurs under these conditions, where the miscible HPMA monomer polymerises to form an insoluble poly (2-hydroxypropy

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25

Cotanda, Santapau Maria José. "Amino-containing polymers for catalysis using RAFT polymerization." Thesis, University of Warwick, 2012. http://wrap.warwick.ac.uk/56272/.

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Chapter 1 is a general introduction of the whole thesis and it features the main concepts of this project. Chapter 2 reports the synthesis and self- assembly of a temperature-responsive DMAP containing nanoreactor. The DMAP motif is incorporated in to a monomer and polymerized by RAFT with styrene in order to form the hydrophobic block of a polymeric micelle. The shell of the micelle is formed by chain extension of the styrenic block with NIPAM, which provides temperature responsive properties to the system. In Chapter 3, the concept of using polymeric micelles to catalyze organic reactions in

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26

Wilks, Thomas R. "Synthesis of DNA-polymer conjugates using RAFT polymerisation." Thesis, University of Warwick, 2013. http://wrap.warwick.ac.uk/58568/.

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The use of reversible addition–fragmentation chain transfer (RAFT) polymerisation for the production of DNA–polymer conjugates is explored. Chapter 1 gives a general introduction to the field of DNA–polymer conjugates, their potential applications and methods for their synthesis. The need for a general, solutionphase technique for DNA–polymer conjugation is highlighted. In Chapters 2-5, the use of a number of different strategies for the production of DNA–polymer conjugates is described. Amide coupling (Chapter 2) is found to produce the desired products only under very specific reaction condi

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27

Chirowodza, Helen. "Polymer-clay nanocomposites prepared by RAFT-supported grafting." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71914.

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Thesis (PhD)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: In materials chemistry, surface-initiated reversible deactivation radical polymerisation (SI-RDRP) has emerged as one of the most versatile routes to synthesising inorganic/organic hybrid materials consisting of well-defined polymers. The resultant materials often exhibit a remarkable improvement in bulk material properties even after the addition of very small amounts of inorganic modifiers like clay. A novel cationic reversible addition–fragmentation chain transfer (RAFT) agent with the dual purpose of modifying the surface o

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28

Bailly, Nathalie. "AB diblock copolymers via RAFT-mediated miniemulsion polymerization." Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/2707.

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Thesis (MSc (Chemistry and Polymer Science))--Stellenbosch University, 2008.<br>The Reversible addition fragmentation chain transfer (RAFT) technique is a robust and versatile technique that enables the synthesis of polymers of controlled molecular weight and polydispersity. The application of the RAFT technique in heterogeneous aqueous media has attracted great interest in academics and industry due to it being more environmentally friendly, besides its other advantages. To date, the synthesis of well-defined high molecular weight polymers via the RAFT process under industrially relevan

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29

Bivigou, Koumba Achille Mayelle. "Design, synthesis and characterization of novel raft agents." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/2992.

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Thesis (MSc (Chemistry and Polymer Science))--University of Stellenbosch, 2005.<br>This thesis begins with the description of the preparation of thirteen dithioesters (of the form Z- (C=S)-S-R) which were characterized via Fourier-transform infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (NMR) and ultraviolet spectroscopy (UV). The dithioesters were then used as reversible addition-fragmentation chain transfer (RAFT) mediating agents in the bulk polymerization of styrene, in order to observe differences in the kinetic behaviour of the polymerizations and, as a resul

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30

Ng, Harald. "Distributed Consensus: Performance Comparison of Paxos and Raft." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-281973.

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With the growth of the internet, distributed systems have become increasingly important in order to provide more available and scalable applications. Con- sensus is a fundamental problem in distributed systems where multiple pro- cesses have to agree on the same proposed value in the presence of partial failures. Distributed consensus allows for building various applications such as lock services, configuration manager services or distributed databases.Two well-known consensus algorithms for building distributed logs are Multi-Paxos and Raft. Multi-Paxos was published almost three decades befo

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31

Lagarde, Antoine. "Birth, life and death of a granular raft." Thesis, Sorbonne université, 2020. http://www.theses.fr/2020SORUS054.

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Nous étudions le devenir d'une monocouche de particules à une interface huile-eau, appelée radeau granulaire, depuis sa formation jusqu'à son naufrage. Nous nous attaquons d'abord à l'interaction capillaire entre deux particules, que nous généralisons ensuite à deux radeaux granulaires. Cette force dépend fortement du nombre de particules, une conséquence directe de la déformation que chacun des radeaux impose à l'interface. Nous explorons ensuite l'interaction entre de nombreux radeaux granulaires répartis aléatoirement à l'interface. Leur agrégation est d'autant plus rapide que la distance i

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32

Wilkinson, Dorothy Kate. "Functional characterisation of the lipid raft protein stomatin." Thesis, University of Leeds, 2005. http://etheses.whiterose.ac.uk/448/.

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The function of the integral membrane protein stomatin is as yet poorly understood. Stomatin is deficient from the erythrocyte membrane of patients suffering with Overhydrated Hereditary Stomatocytosis (OHSt). Patient erythrocytes have altered morphology and are known as stomatocytes. It is believed that stomatin is mistrafficked in the developing stomatocyte. These patients suffer grossly abnormal cation fluxes in the stomatocyte membrane which causes increased osmotic fragility of the cell and results in haemolytic anaemia. This study set out to characterise further stomatin and to investiga

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33

Noble, Gavin Thomas. "Modelling glycocluster effects using artificial lipid rafts." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/modelling-glycocluster-effects-using-artificial-lipid-rafts(10686397-b8ea-473d-ab27-8fc79b4c424b).html.

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The interaction of carbohydrates with carbohydrate-binding proteins is key to a multitude of important biological events, such as cell-cell interactions and signal transduction. Carbohydrates are also essential for energy storage and transfer. Binding to the three-dimensional display of carbohydrates at the cell surface (the glycocalyx) is known to play a role in many disease states, such as carbohydrate binding by viruses. Furthermore, changes in the distribution and type of oligosaccharides is known to occur at tumour cell surfaces. The importance of these natural events at the cell membrane

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34

Seifert, Denis. "Synthese und Charakterisierung von sensitiven vernetzungsfähigen Blockcopolymeren mittels RAFT." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2005. http://nbn-resolving.de/urn:nbn:de:swb:14-1132231440987-09334.

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In vorangegangenen Arbeiten im eigenen Arbeitskreis wurden sensitive Hydrogelpartikel im mm- und &amp;#956;m-Bereich synthetisiert. Die Reaktion dieser Gele auf Änderung des einwirkenden Stimulus war jedoch nicht schnell genug für die gewünschten Anwendungen in Mikroventilen. Die verwendeten Polymere waren statistische Copolymere aus einem Chromophor (DMIAAm) und einem sensitiven Monomer (NIPAAm) und wiesen daher sehr breite Molmassenverteilungen auf. Mit Hilfe des Chromophores wurde es möglich, Hydrogele im Submikrometerbereich zu synthetisieren. Bei der Vernetzung dieser Polymere mit UVB

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Özyürek, Zeynep. "Thermoresponsive Glycopolymers via Controlled Radical Polymerization (RAFT) for Biomolecular Recognition." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1190291104620-73670.

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Stimuli responsive polymers (SRP) have attracted a lot of attention, due to their potential and promising applications in many fields, as protein-ligand recognition, on-off switches for modulated drug delivery or artificial organs. Poly(N-isopropylacrylamide) (PNIPAM) is one of the most widely studied polymers due to its lower critical solution temperature (LCST) at ~ 32° C in aqueous solution. Additionally, glycopolymers, where free sugar units are present, have potentially interesting applications especially in bio-recognition where sugars play an important role. In this work, our interest w

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36

Hentschel, Jens. "Synthese und kontrollierte Mikrostrukturbildung funktionaler Peptid-Polymerkonjugate in organischen Lösungsmitteln." Phd thesis, Universität Potsdam, 2008. http://opus.kobv.de/ubp/volltexte/2008/1984/.

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In der vorliegenden Arbeit wurde ein Ansatz verfolgt, die besonderen Eigenschaften der Strukturbildung sequenzdefinierter Peptide mit den vielseitigen Materialeigenschaften synthetischer Blockcopolymere zu kombinieren. Dazu wurde ein synthetisches Polymer kovalent mit einer definierten Peptidsequenz verknüpft. Der Peptidblock (die Organisationseinheit) wurde speziell designt, um später die Strukturbildung des Peptid-Polymerkonjugates induzieren und leiten zu können. Als Organisationsmotiv diente hierbei das aus der Natur bekannte β-Faltblatt Strukturmotiv. Das Peptidsegment wurde in einer fes

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Yilmaz, Beren. "An Anlaytical And Experimental Study On Piled Raft Foundations." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611500/index.pdf.

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Two different concepts and design procedures namely settlement reducing piles and piled raft foundations have been studied independently in this thesis. A laboratory study is conducted on model rafts with differing number of model settlement reducing piles. Pile length, pile diameter, type of soil and size of raft are kept constant and settlements are measured under sustained loading. Remolded kaolin is consolidated under controlled stresses before tests are performed in model boxes. The tests are conducted under two sustained loadings of 75 kPa and 40 kPa. 0(raft), 16 and 49 number of piles a

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38

Peng, Wentao [Verfasser]. "Binary Planet–Satellite Nanostructure Using RAFT Polymer / Wentao Peng." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://d-nb.info/1234846802/34.

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39

Giannopoulos, Konstantinos. "Numerical analysis of the reuse of piled raft foundations." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/9101.

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This thesis considers the reuse and the optimum design of piled raft foundations using numerical analysis. The solution proposed for reusing foundations is the design of a piled raft foundation capable of supporting successive buildings. A raft foundation, with a limited number of piles located strategically beneath the raft and utilising a high proportion of the ultimate load capacity, is considered the most efficient design when the raft foundation alone provides sufficient load capacity, but at the same time settlements are excessive. This is the case in high plasticity stiff clays such as

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40

Bowes, Angela. "Novel synthesis of block copolymers via the RAFT process." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/976.

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41

Johnson, Iain Joseph. "Synthesis and characterisation of polymeric materials via RAFT polymerisation." Thesis, Durham University, 2013. http://etheses.dur.ac.uk/8452/.

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Well-defined polymeric materials incorporating N-vinylpyrrolidone (NVP), vinyl acetate (VAc) and / or N-vinylcaprolactam (NVCL) were synthesised using reversible addition fragmentation chain transfer (RAFT) polymerisation. Chapter 1 is a general introduction on controlled / living radical polymerisation methods, in addition to a brief background on poly(N-vinylpyrrolidone) (PNVP), poly(vinyl acetate) (PVAc) and poly(N-vinylcaprolactam) (PNVCL). Chapter 2 describes the synthesis of RAFT agents (RAFT agents 1-7) used within this study comprising either a dithiocarbamate (RAFT agent 1) or xanthat

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42

Sasso, Barbara. "Synthesis of ω-end functional polymers by raft polymerization". Thesis, University of Manchester, 2008. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492065.

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Rettig, Hartmut Arnim. "Methoden zur Synthese von definierten bioorganisch-synthetischen Blockcopolymeren." Phd thesis, [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=982242581.

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44

Mertoglu, Murat. "The synthesis of well-defined functional homo- and block copolymers in aqueous media via Reversible Addition-Fragmentation Chain Transfer (RAFT) Polymerization." Phd thesis, Universität Potsdam, 2004. http://opus.kobv.de/ubp/volltexte/2005/233/.

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Abstract (sommario):

New chain transfer agents based on dithiobenzoate and trithiocarbonate for free radical polymerization via Reversible Addition-Fragmentation chain Transfer (RAFT) were synthesized. The new compounds bear permanently hydrophilic sulfonate moieties which provide solubility in water independent of the pH. One of them bears a fluorophore, enabling unsymmetrical double end group labelling as well as the preparation of fluorescent labeled polymers. Their stability against hydrolysis in water was studied, and compared with the most frequently employed water-soluble RAFT agent 4-cyano-4-thiobenzoylsul

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Chakraborty, Sourav. "Synthesis of magnetic polymer nanoparticles using RAFT mediated miniemulsion polymerization in presence of amphiphilic ionic liquid as surfactant." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-164920.

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Polymer magnetic composite (PMC) nanoparticles have gained a large attention due to their potential use in several biomedical applications from biomedical to engineering field. Among the different heterogeneous polymerization techniques that are generally used to prepare hybrid polymer particles, miniemulsion polymerization is proved to be an efficient one. The occurrence of preferential droplet nucleation in case of miniemulsion polymerization results in a 1:1 copy of monomer droplets to the polymer particles and such a mechanistic pathway offers a suitable environment for the preparation of

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Hemp, Sean Taylor. "From N to P: Examining Structure-Property Relationships of Ammonium- and Phosphonium-Containing Macromolecules." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/51560.

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An unprecedented comprehensive study of ammonium and phosphonium polyelectrolytes probed and examined structure-property relationships with a focus on different macromolecular properties. Conventional free radical polymerization readily generated a large library of ammonium- and phosphonium-containing polyelectrolytes. Along with the two different cationic atoms, the alkyl substituent lengths and counterions were varied to generate a thorough structure-property relationship analysis. Phosphonium macromolecules displayed improved thermal stabilities and improved ionic conductivities compared

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Arrington, Kyle. "Sustainable Polymers Through Creative Design." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/96220.

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Abstract (sommario):

Plastics have changed the world of materials due to their high durability, low price, low density, and ease of processing. Unfortunately, the majority of plastic goods produced are discarded instead of recycled, leading to a massive accumulation of plastic waste in landfills and natural habitats. To decrease the impact of plastic waste, sustainable materials and synthetic methods are needed. This dissertation focuses on new strategies for developing renewable and degradable polymers with minimal energy input as well as new methods to blend legacy polyolefins with renewable polymers. The first

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Emiliani, Laura. "Raft miniemulsion (co)polymerization of methyl methacrylate and n-butyl acrylate." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8606/.

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This thesis work is part of a larger synthesis project about alkyd resins from natural sources, copolymerized with methyl acrylate and n-butyl acrylates, which wil be used for coatings purpose. The aim is to control the copolymerization of methyl acrylate and n-butyl acrylate in RAFT miniemulsion. The research was divided into three parts. First the homopolymerization of methyl methacrylate and n-butyl acrylate was studied by varying different parameters such as the amount of surfactant, the amount of initiator, pH, and especially the RAFT agent. Then two macro RAFT agents were synthesized, a

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Roßner, Christian. "High-Precision Particle Arrangement in Gold‒Polymer-Nanocomposites using RAFT Polymerization." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2016. http://hdl.handle.net/11858/00-1735-0000-002B-7CAD-0.

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Silva, Rodrigo Duarte. "Encapsulação de montmorilonita por meio da polimerização radicalar controlada via RAFT em emulsão para produção de filmes nanoestruturados com propriedades anisotrópicas." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/97/97134/tde-30062017-203112/.

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Abstract (sommario):

Este trabalho descreve a síntese de látices poliméricos híbridos contendo a argila natural Montmorilonita (MMT) por meio da polimerização radicalar controlada via mecanismo de transferência reversível de cadeia por adição-fragmentação (RAFT) em emulsão sem adição de surfatante. Primeiramente, copolímeros anfifílicos com diferentes estruturas e composições, foram preparados por meio da polimerização via RAFT em solução e caracterizados por ressonância magnética nuclear de hidrogênio (RMN 1H) e cromatografia por exclusão de tamanho (SEC). A interação entre os copolímeros sintetizados, chamados d

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