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Dissertations / Theses on the topic 'Polyether ether ketone (PEEK)'

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Published: 5 June 2025

Last updated: 16 July 2025

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1

Daoud, Amir. "Cold Gas Dynamic Spray Additive Manufacturing of Moisture-Electric Energy Transformation Devices." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40052.

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The ever-growing Internet of Things is promoting more data acquisition, data exchange and fewer human interactions, engendering a higher demand for sensors and therefore power. While in most cases it is possible to directly connect these sensors to the power grid, it will not always be feasible with emerging technologies, especially in remote areas where human access is limited. Moisture-Electric Energy Transformation (MEET) devices are components that use moisture as a “fuel” to generate electrical power. Upon contact with moisture, a potential difference results from a diffusion mechanism,

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2

Xie, Hong. "Aqueous poly(arylene ether ether ketone) suspensions." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-01312009-063532/.

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3

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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4

Xin, Hua. "Evaluation of poly-ether-ether-ketone (PEEK) for cervical disc replacement devices." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/4378/.

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Poly-ether-ether-ketone (PEEK) is a high performance aromatic thermoplastic with proven biocompatibility. Recently, it has been proposed as a promising bearing material for cervical total disc replacement (TDR). A new bearing combination of PEEK-on-PEEK based self-mating articulation has been used, which may overcome current bearing materials related complications. For ball-on-socket based cervical TDR designs, PEEK based bearing articulation is expected to operate under a boundary lubrication regime regardless of the radial clearance used. The contact stress encountered by the bearing surface

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5

Yoo, Jong Hyun. "Tribological behavior of unfilled and carbon fiber reinforced polyether ether ketone/polyether imide composites." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-12302008-063612/.

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6

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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7

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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8

Talley, Samantha Jo. "Morphology-Property Relationships in Semicrystalline Aerogels of Poly(ether ether ketone)." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/86210.

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The phase diagrams for the thermoreversible gelation of poly(ether ether ketone) (PEEK) in dichloroacetic acid (DCA) and 4-chlorophenol (4CP) were constructed over broad temperature and concentration ranges, revealing that PEEK is capable of dissolving and forming gels in DCA and 4CP up to a weight fraction of 25 wt.%. Highly porous aerogels of PEEK were prepared through simple solvent exchange and solvent removal of the PEEK/DCA or PEEK/4CP gels. Solvent removal utilized freeze-drying (sublimation) methods or supercritical CO2 drying methods. Varying the weight fraction of PEEK dissolved in s

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9

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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10

Covarrubias, Giovanni. "Toward The Synthesis of Functionalized Poly (Ether Ether Ketone): Monitoring the meta-Fluorine Displacement in 3,5,4’-trifluorobenzophenone." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1495051005255892.

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11

Martin, Julie Patricia. "An Investigation of the Microstructure and Properties of a Cryogenically Mechanically Alloyed Polycarbonate-Poly(Ether Ether Ketone) System." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/29773.

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This work investigates processing-microstructure-property relationships of a model cryogenically mechanically alloyed polymer-polymer system: polycarbonate (PC) and poly (ether ether ketone) (PEEK). Mechanically milled and alloyed powders were characterized using a variety of techniques including microscopy and thermal analysis. Cryogenically mechanically alloyed powders processed for 10 hours were shown to have a sub-micron level two-phase microstructure. These powders were processed into testable coupons using a mini ram-injection molder; microstructure and bulk mechanical properties of t

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12

Gravis, David. "Etude de l’influence de la physicochimie et de la texturation de surface sur l’adhérence métal - Poly(Ether Ether Ketone) (PEEK)." Thesis, Le Mans, 2019. http://www.theses.fr/2019LEMA1009.

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La faible densité et les propriétés mécaniques remarquables des composites polymères en font des matériaux de choix pour remplacer les métaux. Cependant, leurs propriétés physicochimiques rendent leurs surfaces peu adhésives pour divers types de revêtements. Pour améliorer l’adhérence de revêtements métalliques sur des substrats de PEEK, et pour mieux comprendre les mécanismes de l’adhésion, les propriétés de surface du matériau ont été modifiées par des procédés physiques en voie sèche.D’une part, cette étude montre que les traitements par plasma oxydants (à basse pression, ou à pression atmo

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13

Waehamad, Wae-asae. "Synthesis and characterization of polyether-ester liquid crystalline polyesters and poly(arylene ether ketone)-lcp segmented copolymers." Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/38781.

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14

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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15

Said, Assma Musbah. "Friction and lubrication behaviour of metal-on-metal and ZTA ceramic-on-CFR PEEK hip prostheses : friction and lubrication behaviour of metal-on-metal hip resurfacing and ZTA ceramic heads versus CFR PEEK cups with various diameters and clearances using serum-based lubricants with various viscosities." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/6339.

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The natural hip joint in healthy people has a very low friction with very little (or no) wear. It works as a dynamically loaded bearing and is subjected to about 1-2 million cycles of loading per year. The applied load is the body weight which is tripled when walking and even higher during other activities such as running and jumping. Unfortunately these joints are not always healthy due to various causes such as fractures or disease leading to severe pain which necessitates joint replacement. Currently, the orthopaedic industries are working towards developing an ideal artificial hip joint wi

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16

Fontaine, Pauline. "Traitement thermique de recyclage appliqué aux composites carbone/PEEK et aux mélanges de composites renforcés carbone. Solutions alternatives de valorisation des fibres recyclées." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2020. http://www.theses.fr/2020EMAC0015.

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Les composites renforcés à fibres de carbone (CRFC) sont des matériaux de haute technicité appliqués à de nombreux domaines, du sport à l’aéronautique. Cette dernière décennie a vu leur demande croitre continuellement, générant en conséquence une augmentation du volume de déchets. Incités par les directives Européennes sur la gestion des déchets, des traitements thermiques de recyclage industriel ont été développés afin de récupérer les fibres de carbone issues des CFRC, principalement à matrice thermodurcissable. Actuellement, les CRFC en développement et/ou de dernières générations, utilisen

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17

Ehmaida, Mutyaa M. "Friction and lubrication behaviour of hip resurfacing metal-on-metal and ZTA ceramic on CFR peek implants with various diameters and clearances : friction and lubrication behaviour of hip resurfacing Co-Cr-Mo and zirconia toughened alumina ceramic heads against carbon fibre reinforced poly-ether-ether-ketone cups with various diameters and clearances have been investigated using serum-based lubricants." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5665.

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Total hip joint prostheses made of CoCrMo heads versus ultra high molecular weight polyethylene (UHMWPE) cups have a limited lifetime, mainly due to the wear of the UHMWPE cups as a result of high friction between the articulating surfaces leading to osteolysis and implant loosening with revision surgery becoming inevitable in more active patients. Tribology plays an important role in developing the design, minimizing wear and reducing friction of hip joint prostheses in order to improve their long-term performance, with good lubricating properties. Metal-on-metal hip resurfacing prostheses ha

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18

Šedivý, Matúš. "Vliv vysokého napětí na různé materiály v nízkém a vysokém vakuu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-318194.

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The beginning of this thesis contains an overview of properties of the insulators, and description of insulators that were used for in depth research of surface breakdown in vacuum. Furthermore, this work focuses on mechanisms of an electric breakdown initiation at the interface of the solid insulator and surrounding low pressure gas. Multiple methods for measurements of dielectric strength are examined. The experimental part describes the measurements performed in the vacuum chamber. The results of these measurements are then analysed. In conclusion, used insulators are compared and suggestio

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19

Gupta, Sahil. "Structure-Property Relationships in Polymers for Dielectric Capacitors." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1395682393.

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20

Kubiak, Steven Thomas. "Characterization of quartz lamp emitters for high temperature polymer selective laser sintering (SLS) applications." Thesis, 2013. http://hdl.handle.net/2152/28497.

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This thesis provides investigation into the interaction between quartz lamp emitters and polyether ether ketone (PEEK) powder. Calculations and experiments concerning the conductivity and emissivity of the powder at various temperatures are performed. The thermal profile of the emitter on a flat powder bed is captured using thermal imaging. The effect of exposing a pile of powder to the emitter and the subsequent thermal gradient through the pile is measured and analyzed. Based on these results, ramifications for the application of these emitters to selective laser sintering (SLS) machines for

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21

Karcha, Robert John. "Blends of polyimides with poly(ether ether ketone) and PEEK derivatives." 1990. https://scholarworks.umass.edu/dissertations/AAI9110160.

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The major theme of this dissertation is the study of blends of polyimides with a series of chemically similar polymers, namely poly(ether ether ketone) (PEEK) and three derivatives of PEEK. The synthesis of two new polymers is discussed, as well as the phase behavior of three new completely miscible blends and one partially miscible blend. Sulfonated and sulfamidated PEEKs have been prepared, based on previously determined methods. The first controlled nitration of PEEK is reported. Spectroscopic characterization was performed to determine the substitution pattern. Thermal analysis was perform

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22

Chang, Yi-Hwa, and 張夷華. "The creep behavior of polyether-ether-ketone composite material." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/58647369794916397529.

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碩士<br>國立臺灣大學<br>應用力學研究所<br>81<br>A linear four-element Burger mechanical model has been employed for application to viscoelastic polymers.The influence of volume-fraction of inclusions on the overall creep strain of a polyether-ether-ketone (PEEK) matrix composite. The creep rate of the PEEK-matrix,depends linear on the creep strain and primary creep,resulting from the viscous flow of creep deformation,is also considered in addition to the usual steady state,or secondary creep .The method d

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23

Hsu, I. Cheng, and 許義政. "Investigation of sulfonated polyether ether ketone nanocomposite proton exchange membranes." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/53906213003856539011.

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碩士<br>長庚大學<br>化工與材料工程研究所<br>92<br>In this investigation, the sulfonated PEEK(sPEEK) and additional nano SiO2 particles were mixed to manufacture nanocomposite proton exchange membranes, and can be applied in PEMFC or DMFC. We expected that by way of addition SiO2 particles, the properties of membrane could be improved. Beside, we attempted to use supercritical fluid carbon dioxide technology, to increase the ionic conductivity of membrane. These composite membranes were prepared by Solvent- Casting Method. The result show, these membranes all pose good thermal stability and mechanic

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24

Ruan, Meng Yuan, and 阮孟元. "Studies on the synthesis of 4,4'difluorobenzophenon (DFBP) monomer of the poly (ether ether ketone) (PEEK)." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/28884951817531266225.

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25

Huang, Shin-Shuan, and 黃士軒. "The Effects of Synovial Fluid Compositions on the Morphology of Poly-Ether-Ether-Ketone(PEEK) Wear Particles by Accelerated Wear Testing." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/5f92e4.

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碩士<br>國立臺北科技大學<br>化學工程研究所<br>99<br>At present, total joint replacement (TJR) is a widely accepted clinical treatment for orthopedic patients. The invention of artificial joints has indeed solved a lot of problem, but immunological response induced by wear particles of artificial joints thus becomes the difficult problem for joint surgery. Studies have shown that PEEK has been successfully used in the patient''s clinical performance of orthopedic and spine. In this study, we applied micro-fabricated surface texture to rub against the PEEK to accelerate the wear rate of PEEK. By changi

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26

Kuo, Chien-Wei, and 郭建緯. "Applying microfabricated surface texture to generate poly-ether-ether-ketone (PEEK) wear particles with controlled size and shape and pre-clinical testing application." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/e237hm.

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碩士<br>國立臺北科技大學<br>化學工程研究所<br>98<br>The wear debris of Ultra High Molecular Weight Polyethyelene (UHMWPE) generated in joint organization can induce osteolysis and eventually caused prosthesis failure. In order to understand the possible of the Poly-Ether-Ether-Ketone (PEEK) material substitutes for UHMWPE.We are looking for the methods to control the wear particles of PEEK induced bioactivies by surface texturing techniques、lubricating and other experiment parameter improvements. In this study, we applied micro-fabricated surface texture to rub against the PEEK to accelerate the wear rate

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27

Laio, Yan-Jyun, and 廖彥鈞. "Applying Microfabricated Surface Texture to Generate Ultra-High Molecular Weight Polyethylene (UHMWPE) and Poly-Ether-Ether-Ketone (PEEK) Wear Particles in Vivo to investigate their effects on Osteolysis." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/v78435.

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碩士<br>國立臺北科技大學<br>化學工程研究所<br>99<br>It has been known that wear-debris osetolysis is the main reason for long-term failure in total joint arthroplasty. The debris which was produced from orthopaedic implant induces inflammation and stimulates macrophage to secrete varieties of inflammatory cytokines. These cytokines activate osteoclast differentiation and further cause osteolysis, which is the main cause of aseptic loosening. Thus, there is more wear resistance materials occurred. However, the wear-resistance debris biological response has not been study thoroughly. Nevertheless, it is difficul

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