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Dissertations / Theses on the topic 'PEEK polymer'

Author: Grafiati

Published: 5 June 2025

Last updated: 15 July 2025

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1

Ewing, Zachary. "Synthesis and characterization of PEEK analogues utilizing 3,5- and 2,4-difluorobenzophenone." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1484314722085434.

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2

Al, Raheil I. A. M. "Development of crystalline morphology in polyethylene and PEEK." Thesis, University of Reading, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378160.

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3

Shi, Ying. "High Temperature Shape Memory Polymers & Ionomer Modified Asphalts." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1374793580.

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4

Waddon, Alan J. "The crystallisation and morphology of poly(ether-ether-ketone) (PEEK), poly(ether-ketone) (PEK) and poly(phenylene-sulphide) (PPS)." Thesis, University of Bristol, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328229.

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5

Wang, Nannan. "Carbon-coated nanoparticles and their application in high performance polymer nanocomposites." Thesis, University of Exeter, 2018. http://hdl.handle.net/10871/33110.

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Shrinking down into nanoscale, materials exhibit huge property advantages over their bulk form. New forms of carbon at nanoscale have occupied the prominent position in modern materials research. With a very long history accompanying our human civilisation, carbon as a wonder material has once again contributed to our technological advances, as evidenced by the discoveries and research attractions in the last a few decades. Research into fullerenes (C60, C70, etc.), carbon nanotubes (CNTs) and graphene has been continued raising, because of the numerous novel properties associated with these n

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6

Robinson, Leanne. "Strategies to enhance the bioactive nature of peek polymer surfaces using calcium phosphate coatings." Thesis, Ulster University, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.714495.

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This research investigated the potential to deliver substituted CaP thin films onto medically relevant substrates, in a one step process, via RFMS, so as to enhance the substrates surface topography and chemistry to stimulate an enhanced osteoblastic response. RFMS was utilised initially to sputter deposit (substituted-Sr and/ Zn) CaP onto Ti. Chemical and topographical surface properties in both the as-deposited and annealed state at 500 °C were investigated. Studies were undertaken which placed special emphasis on how the chemistry and morphology of (substituted) CaP coatings, sputter deposi

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7

Golzar, Mohammad. "Melt Spinning of the Fine PEEK Filaments." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2004. http://nbn-resolving.de/urn:nbn:de:swb:14-1101380771578-37580.

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The production of fine filaments using the melt spinning process needs considerable effort. A thermoplastic melt is stretched from the spinneret under a constant take-up speed. The high performance thermoplastic PEEK is solidified in the melt spinning process in a small distance and short time. Therefore, the fine PEEK filaments in the fibre formation zone underwent a high deformation and cooling rate. To make the melt spinning process stable and to produce the fine PEEK filaments, material properties and material behaviour are examined using on-line and off-line measurements. The fibre speed

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8

Delhorbe, Virginie. "Elaboration de membranes pour piles à combustible à architecture réseaux (semi-)interpénétrés de polymères." Thesis, Cergy-Pontoise, 2011. http://www.theses.fr/2011CERG0512/document.

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Les membranes polymères utilisées actuellement dans les piles à combustible voient leurs performances diminuer à haute température (T > 90°C) et à faible humidité relative (HR < 50%) [1]. Cette diminution est principalement liée aux pertes des propriétés mécaniques et de conduction dans ces conditions. Afin de remédier à ces inconvénients, des membranes originales présentant une architecture de réseaux (semi-)interpénétrés de polymères [2] ((semi-)RIP) dans lesquelles un réseau hydrophobe est associé à un réseau hydrophile, ont été développées dans le cadre du projet ANR PAN-H « AMEIRICC

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9

Rivière, Lisa. "Analyse des mécanismes de conduction thermique dans les composites structuraux PEEK/particules submicroniques d'argent." Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30200/document.

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Ce travail s'inscrit dans la problématique de l'optimisation des transferts thermiques et électriques dans les composites à matrice polymère. Il a été démontré que l'introduction de particules conductrices dans une matrice isolante permet d'en augmenter la conductivité thermique. À l'échelle macroscopique, les mécanismes résistifs sont influencés par un jeu complexe de paramètres : nature des constituants, morphologie de la phase dispersée et interactions entre matrice et particules. L'influence de ces différents paramètres sur les propriétés thermiques de composites PEEK/particules d'argent s

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10

Brunello, Giuseppe. "Computational modeling of materials in polymer electrolyte membrane fuel cells." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/48937.

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Fuel cells have the potential to change the energy paradigm by allowing more efficient use of energy. In particular, Polymer Electrolyte Membrane Fuel Cells (PEMFC) are interesting because they are low temperature devices. However, there are still numerous challenges limiting their widespread use including operating temperature, types of permissible fuels and optimal use of expensive catalysts. The first two problems are related mainly to the ionomer electrolyte, which largely determines the operating temperature and fuel type. While new ionomer membranes have been proposed to address some of

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11

Ortega, Martínez Jorge. "Aplicación de las estructuras de PEEK para la confección de prótesis CAD-CAM implanto-soportadas. Estudio in-vitro." Doctoral thesis, Universitat Internacional de Catalunya, 2018. http://hdl.handle.net/10803/599760.

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El éxito de los implantes dentales a largo plazo ya es una realidad, pero seguimos teniendo complicaciones estéticas, biológicas y mecánicas. Por estos motivos la investigación avanza para descubrir nuevos materiales y aditamentos que nos permitan minimizar estas complicaciones. De las complicaciones más habituales que suceden posteriormente a la osteointegración de los implantes se encuentran: la microfiltración bacteriana y la fractura o aflojamiento de alguno de los componentes protésicos. En las prótesis cementadas se consideran como desventajas: la difícil retirada en caso necesario a

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12

Willeman, Héloïse. "Multi-scale characterization of deformation mechanisms of poly-ether-ether-ketone (PEEK) under tensile stretching." Electronic Thesis or Diss., Lyon, INSA, 2023. http://www.theses.fr/2023ISAL0006.

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L’objectif de cette thèse est d’établir le scénario multi-échelles de déformation du PEEK lorsqu’il est sollicité en traction uniaxiale. Préalablement à la mise en oeuvre d’échantillons de deux grades commerciaux de PEEK, les propriétés thermiques et mécaniques de ces matériaux ont été caractérisées. La température d’oubli thermodynamique ainsi que la sensibilité aux vitesses de refroidissement ont été établies. Des éprouvettes de traction ont été obtenues à partir de plaques thermocompressées, procédé choisi pour obtenir des morphologies les plus isotropes possibles. Les propriétés mécaniques

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13

Cormier, Daniel. "Repair of Conductive Layer on Carbon Fibre Reinforced Polymer Composite with Cold Gas Dynamic Spray." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/33160.

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Carbon fibre reinforced composites are known for their high specific strength-to-weight ratio and are of great interest to the aerospace industry. Incorporating these materials into the fuselage, like in Boeing's 787 "Dreamliner", offers considerable weight reduction which increases flying efficiency, and reduces the cost of flying. In flight, aircraft are often subject to lightning strikes which, in the case of composites, can result in localized melting given the high resistive nature of the material. Aerospace carbon fibre composites often incorporate a metallic mesh or foil within the comp

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14

Pedoto, Giuseppe. "Characterization and Modelling of the Thermomechanical and Ageing Behavior of PEKK and C/PEKK Composites for Aircraft Applications at High Temperatures (above the Glass Transition Temperature) Characterization of the mechanical behavior of PEKK polymer and C/PEKK composite materials for aeronautical applications below and above the glass transition temperature." Thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2020. http://www.theses.fr/2020ESMA0011.

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La sensibilisation accrue aux questions environnementales concerne aujourd'hui les structures aéronautiques en termes d'impact environnemental et traitements de fin de vie. Dans cette optique,la possibilité de remplacer, dans les composites à matrice organique (CMO) utilisés pour des applications aéronautiques, leur matrice thermodurcissable non recyclable par une matrice thermoplastique recyclable est étudiée. En outre, les polymères thermoplastiques, tels que le PEKK, ont la possibilité d'être utilisés dans des structures plus chaudes (par exemple le pylône d'un avion), faisant l'objet de so

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15

Ohaeri, James Uchenna. "Alkylenedioxy Containing PEEK Polymers Containing Meta Linkages." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1464024283.

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16

Dumoulin, Emmanuel. "Fabrication additive de pièces en polymères thermoplastiques hautes performances et en polyamide 12 par le procédé de frittage sélectif par laser." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2014. http://pastel.archives-ouvertes.fr/pastel-01021861.

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Le frittage sélectif par laser (ou Selective Laser Sintering, SLS) des poudres polymères thermoplastiques est maintenant une technique répandue de fabrication additive. Néanmoins, ce procédé n'est industriellement mature que pour une seule famille de polymères, les polyamides. Pour que ce procédé soit employé dans la fabrication de pièces subissant des contraintes thermiques au-delà de 50 °C, il est ainsi nécessaire d'étendre la gamme des matériaux utilisables à des polymères hautes performances tels que les poly(aryl-éther-cétone) ou les poly(aryl-imide). Cette étude décrit la fabrication add

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17

Fetters, Hannah. "Functionalized PEEK Analogues from 2,4- and 3,5- Difluorobenzophenone Derivatives." Wright State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1559497023409191.

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18

Patel, Parina. "Investigation of the fire behaviour of PEEK-based polymers and compounds." Thesis, University of Central Lancashire, 2011. http://clok.uclan.ac.uk/2918/.

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Polyetheretherketone (PEEK) is a polymer with outstanding performance, particularly concerning temperature resistance, chemical resistance and mechanical characteristics. Literature shows a gap in the knowledge with regards to PEEK flammability and decomposition products. The aim of this thesis is to describe the decomposition and flammability behaviour of PEEK, in order to develop new fire safe PEEK-based materials. By relating the measured thermal decomposition behaviour and changes in physical properties of PEEK materials to their performance in standard flammability tests, the dependence o

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19

Lambaré, Charlène. "La métallisation de surface polymère par procédés plasmas : étude de l’adhésion à l’interface métal/polymère." Nantes, 2014. http://www.theses.fr/2014NANT2065.

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La métallisation des matières plastiques concerne aujourd’hui un grand nombre d’applications industrielles (automobile, électronique, etc. ). Actuellement, la métallisation des polymères consiste à déposer un film métallique conducteur à partir de gamme chimique et/ou électrochimique. L’attaque chimique de la surface utilise notamment du chrome hexavalent (CrVI), une espèce cancérigène, mutagène et toxique pour la reproduction. Ce projet a permis d’étudier une technologie plasma innovante visant à s’affranchir du CrVI. Cette technologie est basée sur l’utilisation de procédés plasmas froids gé

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20

Alsadon, Omar. "Evaluating PolyEtherKetoneKetone (PEKK) polymer used for fabricating fixed prosthodontics." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/17181/.

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Dental alloys, and later zirconia, have been used in dentistry as frameworks for many years in making crowns and bridges veneered with ceramic e.g. feldspathic porcelain. Such methods of restoring teeth have been extensively studied both in the laboratory and clinically. Although such substructures have excellent strength there remains a large properties mismatch between these materials and bone or dentine e.g. elasticity. Furthermore, other drawbacks have been documented such as possible allergies, colouring of alloy margins, veneer chipping and excessive wear to opposing natural dentition. P

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21

Echeverri, Mauricio. "Phase Diagram Approach to Fabricating Electro-Active Flexible Films: Highly Conductive, Stretchable Polymeric Solid Electrolytes and Cholesteric Liquid Crystal Flexible Displays." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1352949368.

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22

Velikov, Vesselin Hristov Jr. "Time Dependent Properties of Semicrystalline Poly(Arylene Ether Ether Ketone) (Peek) Above and Below the Glass Transition." Diss., Virginia Tech, 1996. http://hdl.handle.net/10919/39845.

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Long time annealing of semicrystalline PEEK above the glass transition results in the observation of several time dependent phenomena - "physical aging", "secondary crystallization", "multiple melting" of lamellae with different thermal stability etc. Their interrelation - common origin and kinetics of development, is characterized extensively for the first time in this study. <P> The evolution of the crystallinity during the secondary crystallization process was monitored by DSC and density measurements. Crystallinity was characterized according to the standard

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23

Sun, Jianan. "Peel test for the study of the fibre polymer interface." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ58749.pdf.

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24

Berretta, Silvia. "Poly Ether Ether Ketone (PEEK) polymers for High Temperature Laser Sintering (HT-LS)." Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/18737.

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Laser sintering (LS) is an additive manufacturing technique that allows production of prototypes and fully functional components characterised by the highest level of freedom of design currently achievable. High customisation, multi-functional integration, design optimisation and the potential for reducing cost and production time of a single item are the most outstanding characteristics of the LS process. However, the small number of polymers at present available constitutes a significant drawback for many engineering applications, especially in the automotive and aerospace industrial sectors

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25

Walker, Susan Ann. "Aspects of the plasma modification of polymeric materials." Thesis, Durham University, 1990. http://etheses.dur.ac.uk/6047/.

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The effect of orientation and crystallinity of certain polymers, polyethylene, polypropylene, polyethylene terephthalate (PET) and poly (ether ether ketone) (PEEK) , upon the extent and nature of plasma oxidation was studied. It was found that increasing the extent of surface ordering lessened susceptibility to plasma oxidation and reduced the subsequent decay of surface treatment. The surface ageing of plasma oxidised PEEK was extensively studied with regards to the transient increase in hydrophilicity that has been observed after plasma modification. The decay and transient increase in hydro

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26

Morizur, Vincent. "Fonctionnalisation de polymères et applications dans les domaines de l’énergie, de la catalyse, de la cosmétique et de la santé." Thesis, Nice, 2014. http://www.theses.fr/2014NICE4102.

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Les polymères sont à l’heure actuelle étudiés dans de nombreux domaines comme la chimie, la biochimie, les nanotechnologies, l'électronique, la médecine ou encore les sciences des matériaux et trouvent des applications dans des domaines comme l’industrie automobile, la chimie fine. L’objectif de cette thèse est de réaliser la fonctionnalisation de polymères et de modifier les propriétés de ces matériaux afin d’envisager des nouvelles applications. Nous nous sommes intéressés à des polymères de la famille des poly(aryle éther) et plus particulièrement au poly(éther éther cétone) (PEEK). Ce poly

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27

Lui, So-ching, and 雷素青. "Surface bioactivity enhancement of polyetheretherketone (PEEK) by plasma immersion ion implantation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43572340.

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28

Lui, So-ching. "Surface bioactivity enhancement of polyetheretherketone (PEEK) by plasma immersion ion implantation." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43572340.

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29

Alimuddin, Muhammad Asif. "Peel test for the evaluation of environmental effects on fiber-polymer interface." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0006/MQ45577.pdf.

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30

Shukla, Jay G. "Effect of processing parameters on morphology and mechanical properties of carbon/PEEK (APC2) composite." Thesis, Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/8276.

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31

Hammouti, Sabrina. "Micro-texturation de surface du PEEK par laser femtoseconde : étude locale de l'interaction laser-polymère et apport de la texturation de surface aux propriétés tribologiques d'un contact PEEK/PEEK." Thesis, Ecully, Ecole centrale de Lyon, 2015. http://www.theses.fr/2015ECDL0041/document.

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Au cours des dernières années, l'élaboration de surfaces fonctionnelles par voie chimique et/ou topographique a connu un intérêt croissant. Des avancées significatives ont été réalisées pour l'optimisation des propriétés de surface, notamment tribologiques, via l'introduction de traitement visant à structurer à l'échelle nano- et micrométrique la surface de certains composants mécaniques. Différentes approches, chimiques, mécaniques ou énergétiques, peuvent être employées pour l'amélioration ou la maîtrise du frottement et de l'usure, néanmoins le traitement de surface par laser femtoseconde s

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32

Moore, Corell H. "Modeling the peak absorption of MEH-PPV in various solvents using Density Functional Theory." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/6041.

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Density Functional Theory (DFT) and time-dependent Density Functional Theory (TD-DFT) are powerful tools for modeling orbital energy in conjugated molecules and have been useful tools for research in organic photovoltaics. In this work, DFT is first used to explain the red shift in the absorption spectrum and increased absorption observed in MEH-PPV. Initially, the modeling of the red-shift in the absorption peak of MEH-PPV is studied using Gaussian 03 software with the global hybrid functional B3LYP for exchange-correlation and the 6-31G basis set. DFT and TD-DFT are used to separately study

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33

Sobieraj, Michael C. "The Static and Cyclic Behavior of UHMWPE and PEEK Orthopaedic Polymers in the Presence of Mild Stress Risers." Case Western Reserve University School of Graduate Studies / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1232739212.

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34

Pokorný, Filip. "Peer-To-Peer webové sdílení souborů ve skupině." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2018. http://www.nusl.cz/ntk/nusl-385933.

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The diploma thesis deals with file sharing among users through peer-to-peer transfer in a web environment. The aim was to create a simple application which would provide a group of users with an opportunity to share files among them without any presence of third party or limitation. I have met the target using modern web technologies, of which the most important was WebRTC library through which peer-to-peer transfer has been implemented. These technologies were supported by optimased algorithm and the most recent tools for processing and storage of shared files. The result is a real-time appli

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35

Chong, Yu-wah, and 莊瑜華. "In vitro and in vivo study of plasma immersion ion implantation (PIII)treated polyetheretherketone (PEEK)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B4985883X.

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Polyetheretherketone (PEEK), a polymer with mechanical strength comparable to human bone, is gaining popularity in the orthopedic field because it can potentially relieve the clinical complications, such as stress shielding effect and inevitable implantation failure, which are caused by the mismatch of the mechanical strength between the current metallic implants and the implantation sites. However, it is bio-inert and requires supplementary modification. Plasma immersion ion implantation (PIII) has been well documented that it is a good way to improve the bioactivity of a biomaterial. It is

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36

Macher, Sven [Verfasser], and Peer [Gutachter] Löbmann. "On the Effects of Moisture on Polymer-Based Electrochromic Devices / Sven Macher ; Gutachter: Peer Löbmann." Würzburg : Universität Würzburg, 2021. http://d-nb.info/1238521851/34.

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37

Mazur, Rogério Lago [UNESP]. "Obtenção e caracterização de compósitos de fibras de carbono/PEKK com aplicações aeronaúticas." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/103754.

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Made available in DSpace on 2014-06-11T19:32:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-12-15Bitstream added on 2014-06-13T20:24:13Z : No. of bitstreams: 1 mazur_rl_dr_guara.pdf: 5349444 bytes, checksum: 5546ed3e05f9b04e6ef0e88215a4b018 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Os compósitos poliméricos avançados têm sido utilizados como materiais estruturais de elevado desempenho em aplicações aeroespaciais nos últimos 40 anos. No entanto, esses materiais podem apresentar problemas quando expostos à umidade, temperatura, radiação ultravio

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Sinangil, Mehmet Selcuk. "Estimation of crystal size and inhomogeneous strain in polymers using single peak analysis." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/19096.

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Mazur, Rogério Lago. "Obtenção e caracterização de compósitos de fibras de carbono/PEKK com aplicações aeronaúticas /." Guaratinguetá : [s.n.], 2010. http://hdl.handle.net/11449/103754.

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Resumo: Os compósitos poliméricos avançados têm sido utilizados como materiais estruturais de elevado desempenho em aplicações aeroespaciais nos últimos 40 anos. No entanto, esses materiais podem apresentar problemas quando expostos à umidade, temperatura, radiação ultravioleta e variação térmica, podendo ocorrer sinergia entre os principais mecanismos de degradação. Entre os compósitos termoplásticos, o laminado processado a partir de fibras de carbono/PEKK (poli(éter-cetona-cetona)) mostra excelente balanço de propriedades, incluindo elevada temperatura de transição vítrea, elevados valores

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Wendel, Erik. "Evaluation of potential for metal/polymer/metal sandwich material as outer panels for trucks." Thesis, KTH, Materialvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-247958.

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Reducing the weight of the truck vehicle conveys more cargo to be carried by thetrailer. This has a significant impact on the efficiency of the transport lowering both the total cost of cargo moved and the total carbon dioxide emitted. Half of the body in-white weight of a truck is comprised out of panels made out of thin mild forming steel which cannot be made thinner to reduce weight due to the lowered stiffness it would entail. Sandwich materials have a high stiffness to weight ratio and would for the same panel thickness as regular forming steel have a comparable bending stiffness but lowe

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41

Yu, Wumin. "Interfacial Structure of Bilayer Compensation Films Prepared by Direct Coating Process." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1353304726.

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42

Begen, Burak. "INFLUENCE OF PRESSURE ON FAST DYNAMICS IN POLYMERS." University of Akron / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=akron1195437587.

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43

Belguise, Aude. "Morphologie de mélanges semi-cristallins PEKK/PEI et modélisation de leurs propriétés mécaniques." Electronic Thesis or Diss., Université Paris sciences et lettres, 2020. http://www.theses.fr/2020UPSLS014.

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Nous étudions la réponse mécanique des chaines polymères amorphes dans leur transition vitreuse en combinant des expériences sur des matériaux réels amorphes et semi-cristallins et des approches numériques qui tiennent compte du désordre dynamique intrinsèque à ces systèmes. Tout d’abord, nous analysons la réponse faiblement non-linéaire d’un matériau polymère totalement amorphe, le PMMA. En comparant les réponses non linéaire et linéaire, nous montrons que la loi d’accélération des temps de relaxation du matériau sous l’effet de la contrainte est différente à l’échelle locale de celle mesurée

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44

Eguémann, Nicolas. "Etude du comportement mécanique de matériaux composites polymère PEEK / renfort fibre de carbone à architecture discontinue en plis." Thesis, Besançon, 2013. http://www.theses.fr/2013BESA2021.

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Winkler, Ruben. "Haftmechanismen von Metallen (Cu, Al) appliziert durch Draht-Lichtbogenspritzen auf Polymeroberflächen (PEEK)." Eigenverlag, 2017. https://monarch.qucosa.de/id/qucosa%3A21280.

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Das Ziel dieser Arbeit ist die ganzheitliche Erfassung der Haftmechanismen zwischen Metallbeschichtungen (Kupfer, Aluminium) und Polymersubstraten (Polyetheretherketon) funktionalisiert durch Draht-Lichtbogenspritzen. Hierzu werden die Vorbehandlung sowie der Applikationsprozess erforscht. An den hergestellten Fügeverbindungen erfolgen unterschiedliche mechanische Versuche zur Ermittlung der Hafteigenschaften und der Auswirkungen des Beschichtungsvorgangs auf die Substrate. Zur Analyse des Interfaces kommen mikroskopische (REM, TEM, HR-TEM), spektroskopische (EDX) und diffraktometrische (SAED,

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Wafy, Tamer. "Characterization of chemical and mechanical properties of polymer based nanocomposites." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/characterization-of-chemical-and-mechanical-properties-of-polymer-based-nanocomposites(d04d59b3-492f-4611-8a62-e3132a995d85).html.

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One of the most significant issues in nanocomposite performance is improving the dispersion of carbon nanotubes (CNTs) in thermosetting or thermoplastic polymers in order to gain good mechanical properties. Several studies have investigated the fabrication of nanocomposites based on carbon nanotubes and analysed properties, but there is still insufficient data on their structure-property relationships. This thesis has investigated the central importance of stress transfer Raman studies in epoxy composites reinforced with single-walled carbon nanotubes (SWCNTs), double-walled carbon nanotubes (

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Noell, John Lee Watson. "The preparation and characterization of PEK/TEOS glasses by the sol-gel method." Thesis, Virginia Tech, 1987. http://hdl.handle.net/10919/44056.

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Over the last twenty years, substantial emphasis has been placed on the development of a new class of inorganic glasses using the sol-gel approach. This technique utilizes metal alkoxide precursors such as tetraethylorthosilcate (TEOS) to build an inorganic glass matrix out of solution by a two step poly(hydrolysis-condensation) reaction mechanism. The benefits of making ceramics by this method include considerable energy savings due to the lower sintering temperatures required to form the densified glass and the ability to produce multi-component amorphous materials that can not be made throu

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Dorf, Tomasz. "Contributions to ultrasonic micro-moulding process of high performance polymers." Doctoral thesis, Universitat de Girona, 2019. http://hdl.handle.net/10803/667506.

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Polymeric materials, which are suitable for high performance applications for example human implants are one of the most expensive available polymers. Standard injection micromoulding process, dedicated for mass production, it is often uneconomical for low-series or single-piece production. Recently available ultrasonic-micro moulding technology, which can plasticize only amount of polymers required for one part seems to be a potential alternative to standard injection micromoulding technology especially by limiting the waste of materials during small production runs. This thesis focus

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Gu, Binghe. "Development of Polymer Monoliths for the Analysis of Peptides and Proteins." BYU ScholarsArchive, 2006. https://scholarsarchive.byu.edu/etd/1296.

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Several novel polymer monoliths for the analysis of peptides and proteins were synthesized using polyethylene glycol diacrylate (PEGDA) as crosslinker. Photo-initiated copolymerization of polyethylene glycol methyl ether acrylate and PEGDA yielded an inert monolith that could be used for size exclusion liquid chromatography of peptides and proteins. This macroscopically uniform monolith did not shrink or swell in either water or tetrahydrofuran. More importantly, it was found to resist adsorption of both acidic and basic proteins in aqueous buffer without any organic solvent additives. A stron

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Dendele, Nathalie. "Formulation d'activateurs de surface pour l'amélioration du collage thermoplastique et thermodurcissable du PEEK et de son composite fibre de carbone." Toulouse 3, 2013. http://thesesups.ups-tlse.fr/2268/.

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Au cours de ces travaux de thèse, la formulation et la mise en œuvre de mélanges réactifs à viscosité élevée (organogels) ont été réalisées. Ces formules ont été conçues, afin de fonctionnaliser la surface du PEEK (polyétheréthercétone), polymère thermoplastique thermostable et celle de son composite à fibres de carbone. Ces formules réactives reposent chimiquement sur la substitution des fonctions carbonyles du PEEK ; par des fonctions alcools ou des fonctions époxydes. La réactivité des différentes formules ainsi que l'influence des modifications de surface sur les propriétés des matériaux o

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