Bibliographies thématiques / In-situ polymerizations / Thèses
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Thèses sur le sujet « In-situ polymerizations »

Auteur : Grafiati
Publié le 9 mars 2023
Mis à jour le 31 juillet 2025

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1

DISTEFANO, GAETANO. "Nanoporous dipeptide crystals as selective gas sorbents and polymerization nanovessels." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2012. http://hdl.handle.net/10281/29103.

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Hydrophobic dipeptide crystals recently emerged as novel “organic zeolites” featuring tailorable pore size. In fact, seven out of nine pairwise combinations of L-isoleucine, L-valine and L-alanine amino acids crystallize according to the same charge-assisted hydrogen bond pattern, generating a family of microporous materials with right-handed 1D channels, having diameters in the sub-nanometer domain (<6Å), aliphatic environment and different degrees of helicity. The relationship between pore size and material properties was investigated with respect to gas separation, exploiting the affinity o
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2

Carvalho, Fabiana Pires de. "Blendas de poli(metacrilato de metila) e do elastômero saturado poli(acrilonitrila-g-(etileno-co-propileno-co-dieno-g-estireno) obitdas por polimerização in situ." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/248777.

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Orientador: Maria Isabel Felisberti<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-16T00:31:14Z (GMT). No. of bitstreams: 1 Carvalho_FabianaPiresde_D.pdf: 10993804 bytes, checksum: d95821798b6ae5ce1dd39dc3037a996e (MD5) Previous issue date: 2010<br>Resumo:Neste trabalho foram preparadas e caracterizadas blendas de poli(metacrilato de metila), PMMA e poli[acrilonitrila-g-(etileno-co-propileno-co-dieno)-g-estireno], AES. O AES é um polímero amorfo e um material complexo, composto de uma mistura de poli(etileno-co-propileno-c
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3

Macêdo, Neto José Costa de. "Produção e caracterização de nanocompósitos poliméricos obtidos por polimerização em emulsão utilizando Caulinita Amazônica." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266818.

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Orientador: Liliane Maria Ferrareso Lona<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química<br>Made available in DSpace on 2018-08-19T15:02:05Z (GMT). No. of bitstreams: 1 MacedoNeto_JoseCostade_D.pdf: 15337503 bytes, checksum: 2d35593a90de41c2e7333e60488e1bf0 (MD5) Previous issue date: 2011<br>Resumo: Materiais nanocompósitos poliméricos utilizando argilas naturais como reforço tem sido bastante estudados por apresentar propriedades melhoradas em relação ao polímero sem reforço. Este trabalho tem como objetivo produzir e caracterizar materiais nanocompó
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Cocco, Daniel Rotella. "Blendas de poli(metracrilato de metila) e do elastômero ASA obtidas por polimerização in situ." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/248768.

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Orientador: Maria Isabel Felisberti<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Química.<br>Made available in DSpace on 2018-08-19T11:49:08Z (GMT). No. of bitstreams: 1 Cocco_DanielRotella_M.pdf: 5124890 bytes, checksum: 11103bdc5dccd20252a90d83a5a6ba95 (MD5) Previous issue date: 2011<br>Resumo: Neste trabalho foram preparadas e caracterizadas blendas de poli(metacrilato de metila), PMMA, e poli[acrilonitrila-co-acrilato de butila], ASA. O ASA é um polímero amorfo e constituído de uma mistura de poli(acrilato de butila) (PBA) e poli(estireno-co-acrilonitrila)
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5

Figueiredo, Ana Rita Parente. "Novel bacterial cellulose nanocomposites prepared through in situ polymerization." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11662.

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Mestrado em Biotecnologia - Biotecnologia Molecular<br>A celulose é o polissacarídeo mais abundante na Natureza, sendo o principal componente estrutural das plantas, e com uma importância industrial elevada principalmente na indústria papeleira e têxtil. Para além das plantas, a celulose é também produzida por algumas bactérias sendo designada de celulose bacteriana (BC). A BC apresenta propriedades únicas, como a elevada retenção de água, resistência mecânica, biodegradabilidade e biocompatibilidade, que tem atraído enorme atenção em diversas áreas. Uma das principais aplicações da BC é o des
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Herrera-Alonso, Jose M. "Polymer/Clay Nanocomposites as Barrier Materials Used for VOC Removal." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/28933.

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The objective of this study was to determine if the method of incorporation of a silicate layered nanoclay into a polymer matrix can affect the barrier properties of the pristine polymer in order to decrease the transport of volatile organic compounds (VOC) in indoor air. Building materials are a primary source for VOCs. These emissions are a probable cause of acute health effects and discomfort among occupants and are known to diminish productivity. The predicted concentrations of several of the VOCs emitted by structural insulated panels (SIP) are of concern with respect to health and comfor
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7

Botan, Rodrigo 1982. "Sintese e caracterização de nanocompositos de poliestireno - hidroxido duplo lamelar via polimerização in situ." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267081.

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Orientador: Liliane Maria Ferrareso Lona<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-08-15T04:14:20Z (GMT). No. of bitstreams: 1 Botan_Rodrigo_M.pdf: 3509847 bytes, checksum: 294d4147104e0905aa76be122e9494b4 (MD5) Previous issue date: 2010<br>Resumo: Ao longo da última década, nanocompósitos poliméricos vêm atraindo grande atenção da comunidade científica e industrial. Este fato se deve a notável melhora em inúmeras propriedades que estes novos materiais apresentam com uma pequena quantidade de nano-reforç
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8

Walmet, Eric Robert. "In-situ monitoring of PMMA solution polymerization with dielectric microsensors." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/10036.

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9

Soltan, Omar. "Polypropylene/filler nanocomposites by melt compounding and in situ polymerization." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5310.

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Thesis (PhD (Chemistry and Polymer Science))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: The properties of polymer nanocomposites depend greatly on the chemistry of the polymer matrices, the nature of the nanofillers, and the way in which they are prepared. Understanding the synthesis–structure–property relationship of nanocomposites is vital for the development of advanced polymer nanocomposites with enhanced mechanical strength, stiffness and toughness for structural engineering applications. To this end, the primary aim of this study was to determine the impact that the pr
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10

Lourenço, Emerson. "Sintese e caracterização de poliestireno de alto impacto a base de elastomeros saturados de EPDM." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/248780.

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Orientador: Maria Isabel Felisberti<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-10T11:24:13Z (GMT). No. of bitstreams: 1 Lourenco_Emerson_D.pdf: 6653678 bytes, checksum: c935891da79fb2450d1f0bea1524be05 (MD5) Previous issue date: 2007<br>Resumo: O poliestireno de alto impacto (HIPS) apresenta uma ampla variedade de utilização na indústria automobilística. Porém, a sua utilização é limitada, devido à degradação foto-oxidativa de sua fase elastomérica que apresenta alto grau de insaturações. Neste contexto, o objetivo des
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11

Gurr, Julius [Verfasser]. "Applicability of Catalytic in situ Olefin Polymerization in Wood Technology / Julius Gurr." Hamburg : Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky, 2020. http://d-nb.info/1235244059/34.

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12

Labde, Rohan Khushal. "Preparation and Characterization of Polyethylene Terephthalate/Montmorillonite Nanocomposites by In-situ Polymerization Method." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1271126238.

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13

Monthunya, Mpho. "Mechanistic aspects of RAFT Mediated (Co) Polymerization by in situ ¹H NMR." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/79829.

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Thesis (MSc)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: In this study the kinetic and mechanistic aspects of the Reversible Addition Fragmentation Chain Transfer (RAFT) process on the copolymerization of acrylonitrile (AN) and vinyl acetate (VAc) are investigated by application of in situ 1H nuclear magnetic resonance (NMR) spectroscopy. The focus is on the early stages of the reaction where the first few monomer (M) additions occur; the change in concentration of the leaving group of RAFT species as a function of time is followed. Cumyl dithiobenzoate (CDB), S-sec propionic acid O-e
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14

Khan, Miftah Uddin. "Synthesis of polymer nanocomposites via in-situ emulsion polymerization from functionalized nanomaterials." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/15999.

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Dual step process for nanomaterials functionalization was developed; the first step improved the dispersibility of the nanomaterial to assist improving efficiency of the second step, reaction with oleic acid in mild condition. The functionalization was efficient for CNT (carbon nanotubes) and silica, which assisted to utilize in-situ emulsion polymerization, not commonly reported though a versatile technique, to synthesize PS/CNT and PS/silica composites. Investigation revealed improvement of nanocomposites properties and potential for practical application. For the investigated properties, ol
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15

Pasquale, Anthony J. "Synthesis and Characterization of Multi-Component Polymeric Materials Prepared via Free Radical Polymerization." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/27251.

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High molecular weight star-shaped polystyrenes were prepared via the coupling of 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) terminated polystyrene oligomers with divinylbenzene (DVB) in m-xylene at 138 °C. Linear polystyrene oligomers (Mn = 19,300 g/mol, Mw/Mn = 1.10) were synthesized in bulk styrene using benzoyl peroxide in the presence of TEMPO at approximately 130 °C. In situ mid-infrared spectroscopy was successfully utilized to follow initiation, monomer conversion, and polymer formation. Real-time data allowed for the determination of apparent rate constants of 2.1E-5 s-1 at 132
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16

Dai, Xiaoshu. "Synthesis and Processing of Polymers for Biomedical Applications." Digital WPI, 2010. https://digitalcommons.wpi.edu/etd-dissertations/431.

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"In situ polymerizing hydrogel systems play an important role in many tissue engineering applications. They have proven to be useful in biomedical applications that require conversion of liquid macromer solution to tissue compliant hydrogel under physiological conditions. A series of poly(ethylene glycol)-co-poly(lactate) diacrylate macromers were synthesized with variable PEG molecular weight and lactate content. The macromer compositions were confirmed by NMR spectroscopy and ion chromatography. These macromers were polymerized to form hydrogels by free radical polymerization using eith
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17

Pattaro, Ana Flávia 1982. "Desenvolvimento de nanocompósitos de nylon 6 em um reator de bancada em batelada = polimerização in situ em unidade experimental." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266702.

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Orientadores: Rubens Maciel Filho, Maria Carolina Burgos Costa<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química<br>Made available in DSpace on 2018-08-20T08:40:01Z (GMT). No. of bitstreams: 1 Pattaro_AnaFlavia_M.pdf: 11480434 bytes, checksum: e73b5f91ac734cab17a6d1dd1e142174 (MD5) Previous issue date: 2012<br>Resumo: Este projeto envolve o estudo e desenvolvimento de materiais compósitos (polímero/carga) nanoestruturados (nanocompósitos), produzidos em uma unidade experimental de polimerização, destinada ao desenvolvimento de Nylon -6 (Poliamida-
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18

Lizotte, Jeremy Richard. "Synthesis and Characterization of Tailored Macromolecules via Stable Free Radical Polymerization Methodologies." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/28998.

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The stable free radical polymerization methodology for production of controlled macromolecules was investigated using a novel monomer, 2-vinylnaphthalene. Initial polymerizations resulted in molecular weight distributions typical of conventional free radical polymerization techniques (>2.0). Manipulation of the initiator concentration and the molar ratio of initiator to nitroxide demonstrated no significant control over the resulting polymer products. Analysis of the polymerization kinetics for a 2-vinylnaphthalene polymerization performed in the presence and absence of the free radical init
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19

Elgmati, Rugia Ali. "Electrochemical in-situ polymerization of graphene oxide/conducting star copolymer nanocomposite as supercapacitor electrode." University of the Western Cape, 2017. http://hdl.handle.net/11394/5479.

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>Magister Scientiae - MSc<br>These days there are deep concerns over the environmental consequences of the rate of consumption of energy from non-renewable sources because of the accelerated increase in greenhouse effect. There is, therefore, increasing interest in research activities on renewable energy systems (e.g., supercapacitors, batteries, fuel cells and photovoltaic cells) and their materials. Supercapacitor materials have attracted much attention because of their high energy storage capacity, large surface area, high specific power density (watts/kg) and low cost. The development of
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20

Zakrzewska, Sabina. "Synthesis of α-olefin-based copolymers and nanocomposites". Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-166518.

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The research goal of this work was dedicated to improvement of the properties and enhancement of the application potential of commodity polymer based on polyolefins by choosing different synthesis routes to create new structures and materials. More precisely, the presented study explores different aspects of metallocene and post-metallocene catalyzed olefin polymerization leading to synthesis of novel copolymers and nanocomposites. The first part of this thesis deals with controlled polymerization of α-olefins catalyzed by post-metallocenes. Bis(phenoxyamine) zirconium complexes with [ONNO
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21

Lakshmanan, Nethaji, and Logarasu Rangasamy. "Polymer Electrochromism on PEDOT coated fibres and design of electrochromic pixel using coated fibres." Thesis, Linköping University, The Department of Physics, Chemistry and Biology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15101.

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<p>Polymer electrochromism on PEDOT coated fibres was successfully achieved. The electrochromic property of the PEDOT polymer is an excellent property. This feature gives way to many more research works at present and in the future also. The electrochromic property of the PEDOT polymer is utilized in this thesis work to design an electrochromic display pixel.</p><p> </p><p>The polymer coating over the fibres were obtained by using In-situ polymerization technique. The coated-fibres were used to design a display-pixel. Electrochemistry is performed successfully on the designed pixel to study el
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22

Pavani, Matheus 1989. "Persistência de fragrância em cabelo : influência das propriedades físico-químicas e da encapsulação de óleo essencial." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/317622.

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Orientadores: Marcos José Salvador, Inés Joekes<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-24T13:48:04Z (GMT). No. of bitstreams: 1 Pavani_Matheus_M.pdf: 3408518 bytes, checksum: bdb62efa906a9a04de3a371f12ecd0f0 (MD5) Previous issue date: 2014<br>Resumo: A fragrância de um produto cosmético é um aspecto importante para determinar seu desempenho. É crescente o emprego de produtos naturais, bem como de fragrâncias encapsuladas na indústria cosmética. Entretanto, há escassos estudos descrevendo o perfil de liberaçã
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23

Travain, Silmar Antonio. "Caracterização elétrica, óptica e morfológica de filmes de polianilina para aplicações em dispositivos." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-09102008-105022/.

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Este trabalho descreve o estudo de preparação dos filmes de polianilina, Pani, depositados pelo método de polimerização in-situ para serem utilizados em dispositivos poliméricos emissores de luz (PLEDs) e em sensores químicos e de flexão mecânica. É descrita a síntese química da Pani, a produção de filmes pelo método de polimerização in-situ, o estudo do seu crescimento usando a espectroscopia de UV-Vis e as características morfológicsa da superfície pela técnica de varredura de AFM. Filmes de Pani depositados pela técnica in-situ sobre eletrodos interdigitados foram caracterizados através de
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Sulcis, Roberta. "Preparation of composites through in-situ catalytic homo-and co-polymerization of olefins in the presence of Ground Tire Rubber." Doctoral thesis, Scuola Normale Superiore, 2007. http://hdl.handle.net/11384/85809.

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Saidi, Louise. "Bacterial cellulose/poly(N-methacryloyl glycine) nanocomposites prepared by in situ polymerization for biomedical applications." Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/14842.

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Mestrado em Ciências e Engenharia de Materiais<br>Cellulose is the most abundant polysaccharide on earth, it is the main structural component of plant cell walls. However, it is also produced by bacteria in a purer form called bacterial cellulose (BC). BC is well known and mainly used in several field for its peculiar 3D network that confers to it outstanding properties such as water high holding capacity, high porosity and excellent mechanical properties. BC is also biodegradable and biocompatible. Among the different fields of application, BC is greatly used, in its pure form or in the form
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26

PIGA, DANIELE. "FROM HIGH-PRESSURE TO IN-SITU POLYMERIZATION: DESIGN AND SYNTHESIS, NEW CHALLENGING OF POROUS MATERIALS." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2019. http://hdl.handle.net/10281/241207.

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Il lavoro si è diviso in due parti. La prima parte è stato uno studio sulle capacità di adsorbimento di gas dei materiali porosi, in particolare sulla capacità di sistemi porosi organici nello stoccaggio di metano. Il lavoro si è basato su uno studio sistematico di una serie di materiali porosi organici, delle capacità di stoccaggio di metano ad alta pressione. I materiali sintetizzati sono stati confrontati con alcuni materiali porosi commerciali con alte prestazioni nello stoccaggio e hanno evidenziato un aumento delle quantità di gas possibilmente trasportabile al loro interno. I materiali
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Kop, Erhan. "Synthesis And Characterization Of Mechanical, Thermal And Flammability Properties Of Epoxy Based Nanocomposites." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609124/index.pdf.

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Polymer-clay nanocomposites have received a lot of attention because of outstanding improvements in properties when compared with neat polymeric materials. The aim of this study was to prepare epoxy-clay nanocomposites by mixing organically modified montmorillonite with an epoxy resin and to investigate the effects of clay content on the mechanical, thermal and flammability properties of the resultant nanocomposites. The production of the epoxy-clay nanocomposites was accomplished by in-situ polymerization. In the nanocomposite synthesis, organically modified clay content was varied from 1 wt.
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Lin, Feng. "Preparation and Characterization of Polymer TiO2 Nanocomposites via In-situ Polymerization." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2849.

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Polymer nanocomposites are already a part of many important of worldwide businesses: automotive (molded part in cars), electronics and electrical engineering, household products, packaging industry, aircraft interiors, appliance components, security equipments. Among many nanocomposite precursors, TiO<sub>2</sub> nanopowder is increasingly being investigated due to its special properties. <br /><br /> The objective of this work is to synthesize and characterize polymer-TiO<sub>2</sub> hybrid nanocomposites. When dispersed at the nanoscale level TiO<sub>2</sub> could act as visually tra
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Deshpande, Anushree. "Synthesis and Characterization of in-situ Nylon-6/Epoxy Blends." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1480328231030708.

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Punchaipetch, Prakaipetch. "Epoxy + Liquid Crystalline Epoxy Coreacted Networks." Thesis, University of North Texas, 2000. https://digital.library.unt.edu/ark:/67531/metadc2705/.

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Molecular reinforcement through in-situ polymerization of liquid crystalline epoxies (LCEs) and a non-liquid crystalline epoxy has been investigated. Three LCEs: diglycidyl ether of 4,4'-dihydroxybiphenol (DGE-DHBP) and digylcidyl ether of 4-hydroxyphenyl-4"-hydroxybiphenyl-4'-carboxylate (DGE-HHC), were synthesized and blended with diglycidyl ether of bisphenol F (DGEBP-F) and subsequently cured with anhydride and amine curing agents. Curing kinetics were determined using differential scanning calorimetry (DSC). Parameters for autocatalytic curing kinetics of both pure monomers and blended sy
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Ben, Mabrouk Aymen. "Elaboration de nanocomposites à base de whiskers de cellulose et de polymère acrylique par polymérisation in situ." Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENI089/document.

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A stable aqueous nanocomposite dispersion containing cellulose whiskers and a polymer matrix was prepared via miniemulsion polymerization. We were able to prepare a stable dispersion with a 250 wt % solid content and a cellulose whiskers content ranging from 1 up to 5 wt % based on polymer content. Cellulose nanocrytals suspension was mixed with monomers phase in presence of anionic or cationic surfactant and a stabilizing additive acting as a hydrophobe. After sonication for a short time to obtain a stable emulsion of small droplet polymerisation reaction was trigged by the addition of the in
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Toprak, Pelin. "A New Route To The Synthesis Of Nanocomposites By Using An Unsaturated Polyester Matrix." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605430/index.pdf.

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This study was conducted to investigate the effects of organoclay type and concentration on the nanocomposites synthesized by &ldquo<br>In-Situ Polymerization&rdquo<br>and &ldquo<br>Prepolymerization&rdquo<br>methods. In-Situ Polymerization Method was in fact a new route which consisted of dispersing the monomers<br>propylene glycol, maleic anhydride and o-phthalic anhydride into the galleries of montmorillonite followed by subsequent polymerization. The Prepolymerization Method involved the addition of montmorillonite to the previously synthesized unsaturated polyester. As the first step, all
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Ben, mabrouk Aymen. "Elaboration de nanocomposites à base de whiskers de cellulose et de polymère acrylique par polymérisation in situ." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00721813.

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A stable aqueous nanocomposite dispersion containing cellulose whiskers and a polymer matrix was prepared via miniemulsion polymerization. We were able to prepare a stable dispersion with a 250 wt % solid content and a cellulose whiskers content ranging from 1 up to 5 wt % based on polymer content. Cellulose nanocrytals suspension was mixed with monomers phase in presence of anionic or cationic surfactant and a stabilizing additive acting as a hydrophobe. After sonication for a short time to obtain a stable emulsion of small droplet polymerisation reaction was trigged by the addition of the in
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Erdogan, Selahattin. "Synthesis Of Liquid Crystalline Copolyesters With Low Melting Temperature For In Situ Composite Applications." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613306/index.pdf.

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The objective of this study is to synthesize nematic-thermotropic liquid crystalline polymers (LCP) and determine their possible application areas. In this context, thirty different LCP&rsquo<br>s were synthesized and categorized with respect to their fiber formation capacity, melting temperature and mechanical properties. The basic chemical structure of synthesized LCP&rsquo<br>s were composed of p-acetoxybenzoic acid (p-ABA), m-acetoxybenzoic acid (m-ABA), hydroquinone diacetate (HQDA), terephthalic acid (TPA) and isophthalic acid (IPA) and alkyl-diacids monomers. In addition to mentioned mo
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Betatache, Amina. "Conception et réalisation de capteurs biomimétiques à base de polymères à empreintes moléculaires à transduction électrochimique." Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10250.

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Les biocapteurs sont des moyens d'analyse en plein essor à la fois rapides, sélectifs et peu coûteux, applicables à des domaines très variés (environnement, santé, agroalimentaire…). La capacité de reconnaissance moléculaire extraordinaire de biomolécules telles que les enzymes ou les anticorps a été exploitée avec succès pour la réalisation de nombreux biocapteurs. Cependant, l'inconvénient majeur de ces récepteurs biologiques est qu'ils sont difficiles à produire et fragiles. Une manière de surmonter ces inconvénients consiste à les remplacer par des récepteurs artificiels présentant des pro
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Pazat, Alice. "Chemical Modification of Graphite-based Derivates and Their Uses in Elastomer Nanocomposites." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1050/document.

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L'objectif de la thèse a été d'explorer différentes voies de dispersion de charges graphitiques dans des élastomères de type polyisoprène dans le but d'améliorer les propriétés mécaniques et barrière. Pour augmenter les interactions entre le graphite et l'élastomère et donc diminuer les interactions entre charges, les charges graphitiques ont été modifiées chimiquement. Le graphite a été préalablement oxydé pour obtenir du graphite oxydé (GO) contenant des groupements époxyde, hydroxyle et acide carboxylique, susceptibles de servir comme sites d'ancrage de molécules et de chaînes polymères. Af
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37

Pierrot, François. "Polymérisation in-situ en milieu fondu et sous écoulement élongationnel pour l'élaboration de nouveaux matériaux." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAE011/document.

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Dans ce travail de thèse, des mélanges réactifs de polymères thermoplastiques immiscibles PMMA,PE et PS ont été réalisés dans un mélangeur (RMX®) qui génère principalement des écoulements élongationnels connus pour leurs pouvoirs distributifs et dispersifs même lorsque les composants ont une différence de viscosité importante. La polymérisation in-situ du styrène a été conduite par auto-polymérisation thermique et grâce à des amorceurs radicalaires. Différentes méthodes de préparations et paramètres de mélanges ont été testés puis évalués par l’analyse d’images de microscopie électronique. Les
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Dastjerdi, Zahra. "Cellulose Nanocrystals: Renewable Property Modifiers for Pressure Sensitive Adhesives." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36649.

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Pressure sensitive adhesives (PSAs) are polymeric materials with versatile applications in industrial and consumer products such as protective films, product labels, masking tape, and sticky notes, to name a few applications. World demand for emulsion–based products is on the rise due to worldwide legislation on solvent emissions. In order to completely replace emulsion-based PSAs with their solvent-based counterpart, the property modification of emulsion-based PSAs is required. The use of nanomaterials to modify polymer properties is well established. The aim of this thesis was to use cellulo
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MOTA, Mariaugusta Ferreira. "Utilização de argilas esmectíticas modificadas na síntese de nanocompósitos poliméricos via polimerização IN SITU." Universidade Federal de Campina Grande, 2015. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/426.

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Submitted by Kilvya Braga (kilvyabraga@hotmail.com) on 2018-04-19T14:53:27Z No. of bitstreams: 1 MARIAUGUSTA FERREIRA MOTA - TESE (PPGEQ) 2015.pdf: 7929755 bytes, checksum: 46b508fdcbc2c553fa37592a200d2ae5 (MD5)<br>Made available in DSpace on 2018-04-19T14:53:27Z (GMT). No. of bitstreams: 1 MARIAUGUSTA FERREIRA MOTA - TESE (PPGEQ) 2015.pdf: 7929755 bytes, checksum: 46b508fdcbc2c553fa37592a200d2ae5 (MD5) Previous issue date: 2015-02-27<br>CNPq<br>Este trabalho de Tese descreve a preparação de argilas organofílicas a partir da argila Brasgel e Verde-Lodo naturais que foram utilizadas como
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40

Pierrot, François. "Polymérisation in-situ en milieu fondu et sous écoulement élongationnel pour l'élaboration de nouveaux matériaux." Electronic Thesis or Diss., Strasbourg, 2018. http://www.theses.fr/2018STRAE011.

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Dans ce travail de thèse, des mélanges réactifs de polymères thermoplastiques immiscibles PMMA,PE et PS ont été réalisés dans un mélangeur (RMX®) qui génère principalement des écoulements élongationnels connus pour leurs pouvoirs distributifs et dispersifs même lorsque les composants ont une différence de viscosité importante. La polymérisation in-situ du styrène a été conduite par auto-polymérisation thermique et grâce à des amorceurs radicalaires. Différentes méthodes de préparations et paramètres de mélanges ont été testés puis évalués par l’analyse d’images de microscopie électronique. Les
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Lebert, Jenny [Verfasser], Eva M. [Akademischer Betreuer] Herzig, Peter [Gutachter] Müller-Buschbaum, and Eva M. [Gutachter] Herzig. "Polythiophene thin films: Structure formation during in situ polymerization / Jenny Lebert ; Gutachter: Peter Müller-Buschbaum, Eva M. Herzig ; Betreuer: Eva M. Herzig." München : Universitätsbibliothek der TU München, 2018. http://d-nb.info/1199005592/34.

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Kim, Sung-gi. "PET Nanocomposites Development with Nanoscale Materials." Connect to Online Resource-OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1178043237.

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Dissertation (Ph.D.)--University of Toledo, 2007.<br>Typescript. "Submitted as partial fulfillment of the requirements for The Doctor of Philosophy Degree in Engineering." Bibliography: leaves 200-205.
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Houf, Latifa. "Développement de nanocomposites à propriétés piézoélectriques et optiques non-linéaires." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00686925.

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Le développement de nouveaux capteurs, transducteurs et de dispositifs intégrés optoélectroniques et piézo-électriques nécessite l'élaboration de nouveaux matériaux avec des propriétés mécaniques, optiques et électriques couplées. Dans cette perspective, les nanocomposites à base de nanocristaux inorganiques non centrosymétriques dispersés dans une matrice polymère peuvent donner à la fois des propriétés piézoélectriques et optiques non-linéaires. Cependant, la dispersion et l'orientation des nanocristaux dans la matrice sont primordiales si on souhaite un comportement collectif des nanocrista
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44

Djadoun, S., and S. Kadi. "Elaboration of Nanocomposites Based on Poly (Ethyl Methacrylate-co-Acrylonitrile) by in Situ Polymerization Using an Algerian Bentonite. Thermal Stability and Kinetic Study." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35084.

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This contribution focuses on the synthesis and characterization of nanocomposites based on poly (ethyl methacrylate-co-acrylonitrile) (PEMAN) and different loadings of an organically modified bentonite from Algeria prepared via in situ polymerization. TEM images and X-ray patterns revealed that depending on the loading of this clay, intercalated or partially exfoliated nanocomposites were obtained. These nanocomposites showed an increase in their glass transition temperature compared to the pure copolymer as investigated by Differential Scanning Calorimetry and improved thermal stability
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45

Miranda, Katiusca Wessler. "Síntese de copolímeros de l-lactídeo e ε-caprolactona para funcionalização in situ de partículas de celulose nanocristalina." Universidade do Estado de Santa Catarina, 2015. http://tede.udesc.br/handle/handle/623.

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Made available in DSpace on 2016-12-08T15:56:18Z (GMT). No. of bitstreams: 1 KATIUSCA WESSLER MIRANDA.pdf: 4397696 bytes, checksum: da27bc7c1adc7efa3e74ecfcf87feb0e (MD5) Previous issue date: 2015-08-07<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This paper studied ring opening polymerizations L-lactide (LLA) and &#949;-caprolactone (&#949;-CL) by bulk polymerization and solution polymerization, in order to evaluate the influence of initiator concentration, reaction time and reaction temperature on the yield and molecular weight of both polymers. Tin octoate and methano
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Damay, Jérémie. "Développement de nouveaux traitements du bois basés sur le procédé d'imprégnation axiale." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0178/document.

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L’évolution des lois relatives à l’utilisation de produits biocides impose d’étudier des méthodes innovantes de traitement du bois. Dans ce contexte, les travaux de recherche présentés s’intéressent à une nouvelle alternative dite « non-biocide » impliquant la fabrication de composites bois massif / polymères obtenus par imprégnation de monomères et polymérisation in situ provoquée par chauffage. Le méthacrylate de méthyle, quatre acrylates organiques et trois acrylates hydrosolubles, ainsi que l’alcool furfurylique ont été testés. Les composites fabriqués ont été caractérisés : le polymère es
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47

Ben, Haj Sihem. "Nanoparticules d'amidon : préparation, pouvoir renforçant et utilisation comme agent de stabilisation." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAI027/document.

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Le présent travail examine un nouveau procédé "top-down" de production des nanoparticulesd’amidon basé sur l’utilisation des ultrasons comme moyen de désintégration physique desparticules d’amidon. Une caractérisation approfondie par diffusion dynamique de la lumière(DLS), par microscopie électronique à balayage (FE-SEM) et par diffraction des rayons-X , etdiffusion Raman (DRX, Raman et SAXS) montre que cette approche permet de produire desparticules d’amidon nanométrique, de forme plaquettaire, ayant un caractère amorphe. Lesnanoparticules issues ont été utilisées comme stabilisants de Picker
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Fu, Hanzhuo. "Development of Advanced Capillary Electrophoresis Techniques with UV and Mass Spectrometry Detection for Forensic, Pharmaceutical and Environmental Applications." FIU Digital Commons, 2014. http://digitalcommons.fiu.edu/etd/1531.

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Capillary electrophoresis (CE) is a modern analytical technique, which is electrokinetic separation generated by high voltage and taken place inside the small capillaries. In this dissertation, several advanced capillary electrophoresis methods are presented using different approaches of CE and UV and mass spectrometry are utilized as the detection methods. Capillary electrochromatography (CEC), as one of the CE modes, is a recent developed technique which is a hybrid of capillary electrophoresis and high performance liquid chromatography (HPLC). Capillary electrochromatography exhibits advant
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49

Delices, Annette. "Organized Organic Dye / Hole Transporting Materials for TiO2- and ZnO- based Solid-State Dye-Sensitized Solar Cells (s-DSSCs)." Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCC066/document.

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En raison des problèmes d'instabilité à moyen termes des cellules solaires à colorant (DSSC), l'électrolyte liquide à base d'iodure a été remplacé par plusieurs types de matériaux solides transport de trous (HTM) pour obtenir des DSSCs à l'état solide (s-DSSCs). Parmi ces matériaux, l’utilisation des polymères conducteurs(PC) a attiré une attention considérable en raison de leur bonne stabilité, de leur haute conductivité et de la facilité de leur dépôt sur le semi-conducteur mésoporeux TiO2. Dans ce travail de thèse, plusieurs s-DSSCs basées sur des PC utilisés comme HTM ont été développés da
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Li, Shanghua. "Engineering nanomaterials with enhanced functionality." Licentiate thesis, KTH, Materials Science and Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3906.

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<p>This thesis deals with the engineering of novel nanomaterials, particularly nanocomposites and nanostructured surfaces with enhanced functionalities. The study includes two parts; in the first part, an in situ sol-gel polymerization approach is used for the synthesis of polymer-inorganic hybrid material and its exceptional transparent UV-shielding effect has been investigated. In the second part, electrodeposition process has been adapted to engineer surfaces and the boiling performance of the fabricated nanostructured surfaces is evaluated.</p><p>In the first part of the work, polymer-inor
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