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Dissertations / Theses on the topic 'Conducting polymer nanocomposites'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 February 2022

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1

Consiglio, Armando. "Molecular dynamics simulations of conducting polymer nanocomposites." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18454/.

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Among the conducting polymers, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is one of the most used materials in the field of bioelectronics due to its biocompatibility, chemical stability and high electronic as well as ionic charge transport mobilities. Despite many experimental findings, a microscopic understanding of the materials electronic properties is currently elusive; the main reason is the lack of structural atomistic data of the polymer blend, that is, difficult to obtain because of the disordered and nano-crystalline morphology. In this thesis work we devel
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2

Smith, Jon Anthony. "Polyaniline Gold Nanocomposites." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4900.

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Polyaniline/Gold Nanocomposites J. Anthony Smith 141 Pages Directed by Dr. Ji and #345;?anata The expectation that it is possible to create a range of new materials from two basic components, polyaniline fibers and gold particles is explored. Three synthetic methods were employed each of which created different materials and required different investigation techniques. The methods are: chemical, one step aniline oxidation / AuCl4- reduction; electrochemical/chemical, a two-step composite growth achieved by electrochemical polyaniline thin film growth followed by film immersion in AuCl4- sol
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3

Liew, Soon Yee. "Cellulose nanocrystal : electronically conducting polymer nanocomposites for supercapacitors." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/12880/.

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This thesis describes the use of cellulose nanocrystals for the fabrication of porous nanocomposites with electronic conducting polymers for electrochemical supercapacitor applications. The exceptional strength and negatively charged surface functionalities on cellulose nanocrystals are utilised in these nanocomposites. The negatively charged surface functionalities on cellulose nanocrystals allow their simultaneous incorporation into electropolymerised, positively charged conducting polymer for charge balancing, i.e. co-electrodeposition occurs. The exception is the case of polyaniline-cellul
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4

Li, Jing. "Electrical conducting polymer nanocomposites containing graphite nanoplatelets and carbon nanotubes /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?MECH%202006%20LI.

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5

Olsson, Henrik. "Nanocomposites of Cellulose and Conducting Polymer for Electrical Energy Storage." Doctoral thesis, Uppsala universitet, Nanoteknologi och funktionella material, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-218815.

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The world’s increased energy storage demand, as well as the environmental concerns related to the combustion of fossil fuels, has triggered a transition to intermittent renewable energy sources as well as to electrical and hybrid vehicles. Current day rechargeable batteries are, due to the invention and development of lithium ion batteries, technologically well positioned to answer to some of these demands. Conventional batteries, however, utilize inorganic materials of limited supply that require large amounts of energy during refining and processing. The materials also add a significant cost
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Chiguma, Jasper. "Conducting polymer nanocomposites loaded with nanotubes and fibers for electrical and thermal applications." Diss., Online access via UMI:, 2009.

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7

Basnayaka, Punya A. "Development of Nanostructured Graphene/Conducting Polymer Composite Materials for Supercapacitor Applications." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4864.

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The developments in mobile/portable electronics and alternative energy vehicles prompted engineers and researchers to develop electrochemical energy storage devices called supercapacitors, as the third generation type capacitors. Most of the research and development on supercapacitors focus on electrode materials, electrolytes and hybridization. Some attempts have been directed towards increasing the energy density by employing electroactive materials, such as metal oxides and conducting polymers (CPs). However, the high cost and toxicity of applicable metal oxides and poor long term stabilit
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8

Aykanat, Aydin. "Synthesis, Characterization and Cure Kinetics of Polyaniline Modified Clay / Epoxy Nanocomposites." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1212088154.

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9

Vu, Quoc Trung. "Electrophoretic deposition of semiconducting polymer metal oxide nanocomposites and characterization of the resulting films." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2005. http://nbn-resolving.de/urn:nbn:de:swb:14-1137420064480-98497.

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Conducting polymer nanocomposites composed of metal oxides and polythiophene was synthesized by chemical polymerization in colloidal suspensions. The electrochemical and photoelectrochemical properties of such nanocomposites have been studied. For these investigations films of nanocomposites were prepared by an electrophoretic deposition process. The deposition process was studied in greater detail and kinetic details were determined. The high voltage electrophoretic deposition process was combined with a quartz crystal microbalance (QCM). Then the films were characterized by cyclic voltammetr
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10

Alvi, Farah. "Synthesis and Characterization of Nanocomposites for Electrochemical Capacitors." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/3948.

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Presently there are deep concerns over the environmental consequences and the consumption of non-renewable energy sources, with the accelerated greenhouse effect, triggered enormous interest in the use of renewable energy sources e.g., solar, hydropower, wind and geothermal. However the intermittent nature of harvesting renewable energy sources has recently gained considerable attention in the alternative reliable, cost effective, and environmentally friendly energy storage devices. The supercapacitor and lithium ion batteries are considered more efficient electrical energy storage devices tha
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11

Jouni, Mohammad. "Nouvelles architectures de nano-systèmes polymères conducteurs à base de mélanges de nanocharges conductrices." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0148/document.

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Le domaine de nanocomposites polymères conducteurs a fait l’objet de nombreux travaux et recherches, vu que ces matériaux présentent un fort potentiel pour de nombreuses applications concernant différents secteurs. Toutefois, malgré les progrès et les résultats obtenus pour l’instant, les performances de ce type des matériaux restent insuffisantes pour certaines applications qui peuvent requérir l’association de diverses propriétés (électriques, thermiques, blindage électromagnétique…). Dans cette thèse, on détaille l’élaboration et la caractérisation de nanocomposites polymères conducteurs. D
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12

Gill, Michael. "Polyaniline-silica colloidal nanocomposites." Thesis, University of Sussex, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239632.

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The work presented in this thesis provides a new route to a colloidal form of polyaniline, which uses colloidal silica as a dispersant. We obtained stable colloidal dispersions of polyaniline-silica composite particles with a 'raspberry' morphology. Compressed pellets of these particles exhibit solid-state conductivities of 1O-!_10-2 S crrr l, which is approximately 1-2 orders of magnitude lower than that of polyaniline bulk powder. This novel colloidal form of polyaniline has significantly improved processability compared to conventionally synthesised polyaniline. The synthesis and chemical c
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13

Jafarzadeh, Shadi. "Functional composite coatings containing conducting polymers." Doctoral thesis, KTH, Yt- och korrosionsvetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-155132.

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Organic coatings are widely used to lower the corrosion rate of metallic structures. However, penetration of water, oxygen and corrosive ions through pores present in the coating results in corrosion initiation and propagation once these species reach the metal substrate. Considering the need for systems that offer active protection with self-healing functionality, composite coatings containing polyaniline (PANI) conducting polymer are proposed in this study. In the first phase of my work, PANI was synthesized by various methods and characterized. The rapid mixing synthesis method was chosen f
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14

Karlsson, Christian. "Ionic conduction in glasses and nanocomposite polymer electrolytes /." Göteborg : Chalmers university of technology, 2003. http://catalogue.bnf.fr/ark:/12148/cb392991306.

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15

Cui, Zhenpeng. "Radiation Induced Synthesis of Conducting Polymers and their Metal Nanocomposites." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS165/document.

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L‘objectif du présent travail est de démontrer la versatilité de méthodologie radiolytique et de l‘étendre à la synthèse de différents PCs dans l‘eau. Le poly(3,4-ethylènedioxythiophène), PEDOT, et le polypyrrole, PPy, ont ainsi été préparés avec succès et caractérisés en solution aqueuse, ou après dépôt sur substrat, par des techniques spectroscopiques et microscopiques. La stabilité thermique et la conductivité électrique de ces matériaux radio synthétisés ont été étudiées et comparées aux propriétés des PCs produits par les méthodologies traditionnelles. Nous avons étudié l‘influence de la
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16

Tang, Qingmeng. "Preparation and Characterization of Electrically Conductive Graphene-Based Polymer Nanocomposites." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1386260373.

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17

Kanbur, Yasin. "Conductive Polymer Nanocomposites Of Polypropylene And Organic Field Effect Transistors With Polyethylene Gate Dielectric." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613312/index.pdf.

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One of the aim of this study is to prepare conductive polymer nanocomposites of polypropylene to obtain better mechanical and electrical properties. Composite materials based on conductive fillers dispersed within insulating thermoplastic matrices have wide range of application. For this purpose, conductive polymer nanocomposites of polypropylene with nano dimentional conductive fillers like carbon black, carbon nanotube and fullerene were prepared. Their mechanical, electrical and thermal properties were investigated. Polypropylene (PP)/carbon black (CB) composites at different compositions
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18

Baytekin, Sevil. "Synthesis And Characterization Of Polypyrrole Nanoparticles And Their Nanocomposites With Polypropylene." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610563/index.pdf.

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Conducting polypyrrole (PPy) nanoparticles were synthesized via microemulsion polymerization system. The characterization of PPy nanoparticles was done by Fourier transform infrared spectrometer (FTIR) and scanning electron microscope (SEM). Nanocomposites were prepared by melt-mixing of polypyrrole with polypropylene (PP) and processed with injection molding. The amount of PPy in nanocomposites varied in the range of 1-20% by weight. The effect of PPy nanoparticles on mechanical, electrical properties and thermal stability of nanocomposites were investigated. Tensile test has revealed that in
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19

Li, Yilong. "Vapor sensing behavior of sensor materials based on conductive polymer nanocomposites." Technische Universität Dresden, 2019. https://tud.qucosa.de/id/qucosa%3A38069.

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This work aims to investigate the vapor sensing behavior of conductive polymer composites (CPCs). In connection with the protection of the environment and human beings, sensing of different kinds of chemical vapors is of increasing importance. At the moment, four kinds of vapor sensors are widely investigated and reported, namely semiconducting metal oxide sensors (MO), conjugated polymer sensors, carbonaceous nanomaterial based sensors, and CPC based sensors. Due to their unique component systems, the different sensor types are based on different sensing mechanisms resulting in different pote
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20

Sidwaba, Unathi. "Electrochemical poly(ProDOT) dendritic DNA aptamer biosensor for signalling interferon gamma (IFN-ɣ) TB biomarker". University of the Western Cape, 2017. http://hdl.handle.net/11394/5507.

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Philosophiae Doctor - PhD<br>Tuberculosis (TB) is an infectious disease that, despite all efforts devoted towards its eradication, remains a threat to many countries including South Africa. Current diagnostic assays do offer better performance than the conventional sputum smear microscopy and tuberculin skin tests. However, these assays have been proven to be affected by various factors including the condition of an individual's immune system and vaccination history. By far, electrochemical biosensors are amongst the currently investigated techniques to address the shortcomings associate
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21

Kumar, Bijandra. "Development of smart textiles with low environmental footprint from Conductive polymer nanoComposites." Lorient, 2010. http://www.theses.fr/2010LORIS195.

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Ce travail concerne le développement de textiles multifonctionnels innovants basés sur les composites polymères conducteurs (CPC), travail réalisé dans le cadre du projet européen intitulé « INTELTEX ». Des nanotubes de carbones multi-parois ont été utilisés pour leurs excellentes propriétés électriques afin de créer un réseau de charges conductrices au sein de matrices thermoplastiques synthétiques mais également bio-sourcées. La détection de composés organiques volatiles (COV) par ces systèmes sous forme de film mince exposé à des vapeurs de solvants a été démontrée. De nouvelles stratégies
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22

Zinovyeva, Veronika. "Matériaux composés (polymères électroactif - nanoparticules de métal) et liquides ioniques." Thesis, Dijon, 2010. http://www.theses.fr/2010DIJOS056.

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La thèse de doctorat est consacrée aux synthèses de matériaux composites combinant des polymères conducteurs avec des métaux de transition, leur caractérisation par l'utilisation d'un ensemble des méthodes physiques, chimiques et électrochimiques et leur application catalytique. Ces processus ont été réalisés en milieu conventionnel (aqueux et organique) et dans les liquides ioniques à température ambiante. En tant qu’approche de synthèse, nous proposons une méthode simple qui consiste en la réduction chimique de sels inorganiques au moyen de l’oxydation du monomère en milieux variés. La polym
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23

Khawaja, Mohamad. "Synthesis and Fabrication of Graphene/Conducting Polymer/Metal Oxide Nanocomposite Materials for Supercapacitor Applications." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5715.

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The rising energy consumption worldwide is leading to significant increases in energy production with fossil fuels being the major energy source. The negative environmental impact of fossil fuel use and its finite nature requires the use of alternative sources of energy. Solar energy is a clean alternative energy source; however, its intermittent nature is a major impediment that needs to be reduced or eliminated by the development of cost effective energy storage. Thermal storage in tanks filled typically with molten salt at elevated temperatures is widely used in concentrating solar power pl
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24

Shah, Kunal G. "Conducting Polymers / Polyimide-Clay Nanocomposite Coatings for Corrosion Protection of AA-2024 Alloy." Cincinnati, Ohio : University of Cincinnati, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1083723910.

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25

Mikhaylov, Sergei. "Synthesis and investigation of nanostructured conducting polymers based nanocomposites for ammonia and amines detection." Thesis, Lille 1, 2017. http://www.theses.fr/2017LIL10036/document.

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La thèse est consacrée à la synthèse et à l’étude des propriétés des matériaux hybrides inorganique-organique à base de polyaniline (PANI) et de polypyrrole (PPy) avec des nanoparticules TiO2 (rutile et anatase) et SnO2 applicables à détection l'ammoniac et aux amines. La croissance directe du polymère sur la surface des nanoparticules a permis l’obtention de matériaux nanocomposites avec une structure “core-shell” qui diffère du mélange mécanique simple par une distribution plus uniforme des polymères et une interaction plus forte entre les composants source. L’objet de la recherche est le pr
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26

Nag, Chowdhury Suvam. "Conductive Polymer nanoComposite Quantum Resistive strain Sensors for structural composites damage monitoring." Thesis, Lorient, 2014. http://www.theses.fr/2014LORIS343.

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Un nouveau type de Senseur de déformation Résistif Quantique (QRS) à base de nanotubes de carbone (CNT) a été développé pour le suivi de santé de structures composites (SHM). Les senseurs ont été fabriqués directement par pulvérisation en couche par couche (sLBL) sur la surface de fibres de verre ou de carbone d'une formulation de nanoComposites Polymères Conducteurs (CPC). La réponse des transducteurs CPC a été étudiée sous diverses sollicitations mécaniques en mode statique et dynamique. Différentes stratégies de suivi de santé des composites à l'aide de senseurs piézo-résistifs ont été comp
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27

Sunny, Mohammed Rabius. "Towards Structural Health Monitoring of Gossamer Structures Using Conductive Polymer Nanocomposite Sensors." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/28797.

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The aim of this research is to calibrate conductive polymer nanocomposite materials for large strain sensing and develop a structural health monitoring algorithm for gossamer structures by using nanocomposites as strain sensors. Any health monitoring system works on the principle of sensing the response (strain, acceleration etc.) of the structure to an external excitation and analyzing the response to find out the location and the extent of the damage in the structure. A sensor network, a mathematical model of the structure, and a damage detection algorithm are necessary components of a struc
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28

Liu, Chang. "Development of Nanocomposites Based Sensors Using Molecular/Polymer/Nano-Additive Routes." University of Dayton / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1557241614006627.

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29

Lay, Makara. "Conductive nanopaper from cellulose nanofibers and conductive polymers and/or carbon nanotubes." Doctoral thesis, Universitat de Girona, 2017. http://hdl.handle.net/10803/401711.

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Coming from renewable and sustainable raw materials, nanocelluloses are rapidly emerging as one of the most promising future materials. Recently, the use of nanocellulose nanocomposites in flexible electrodes, biosensors or supercapacitors it is been studied. The main objective of this thesis is to produce conductive nanopapers from cellulose nanofibers (CNF) or bacterial cellulose (BC) and tree different conductive materials: polypyrrole (PPy), poly(3,4-ethylenedioxythiophene : polystyrene sulfonate (PEDOT:PSS) and multi-walled carbon nanotubes (MWCNT). The structure and morphology of nan
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30

Hashemi, Sanatgar Razieh. "FDM 3D printing of conductive polymer nanocomposites : A novel process for functional and smart textiles." Thesis, Lille 1, 2019. http://www.theses.fr/2019LIL1I052/document.

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Le but de cette étude est d’exploiter les fonctionnalités des nano-Composites Polymères Conducteurs (CPC) imprimés en utilisant la technologie FDM (modélisation par dépôt de monofilament en fusion) pour le développement de textiles fonctionnels et intelligents. L’impression 3D présente un fort potentiel pour la création d’une nouvelle classe de nanocomposites multifonctionnels. Par conséquent, le développement et la caractérisation des polymères et nanocomposites fonctionnels et imprimables en 3D sont nécessaires afin d’utiliser l’impression 3D comme nouveau procédé de dépôt de ces matériaux s
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31

Gissentaner, Tremaine D. "Development of Conductive Green Polymer Nano-Composite for use in Construction of Transportation Infrastructure." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1408697877.

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32

Benchirouf, Abderrahmane. "Carbonaceous Nanofillers and Poly(3,4-ethylenedioxythiophene) Poly(styrenesulfonate) Nanocomposites for Wireless Sensing Applications." Universitätsverlag der Technischen Universität Chemnitz, 2018. https://monarch.qucosa.de/id/qucosa%3A31903.

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The current state of wireless sensing technologies possesses a good reliability in terms of time response and sensing on movable parts or in embedded structures. Nevertheless, these tech- nologies involve energy supply such as battery and suffer from low resolution and bulky signal conditioning system for data processing. Thus, a RFID passive wireless sensor is a good candidate to overcome these issues. The feasibility of implementing microstrip patch antennas for sensing application were successfully investigated; however, low sensitivity was always a big issue to be concerned. Sensors based
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33

Lonjon, Antoine. "Nanocomposite conducteur polymère - nanofils métalliques : élaboration et analyse des propriétés physiques." Toulouse 3, 2010. http://thesesups.ups-tlse.fr/1346/.

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Ce travail présente l'élaboration de nanocomposites conducteurs polymère/nanofils métalliques, faiblement chargés afin de conserver les propriétés mécaniques initiales de la matrice polymère. Un travail préalable d'élaboration de nanofils métalliques conducteurs est réalisé avec différents types de métaux. Ces nanofils conducteurs sont ensuite incorporés dans une matrice thermoplastique isolante de P(VDF-TrFE). Les propriétés mécaniques sont conservées pour un taux de charge inférieur à 5 %vol. Pour les nanocomposites conducteurs situés au-delà du seuil de percolation (0,75 à 2 %vol), une cond
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34

Bolisetty, Venkata Priyanka. "Novel Approach of Using Polyvinylidene Fluoride Langmuir-Schaefer Film on Graphene-Polyaniline Nanocomposite for Supercapacitor Applications." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4443.

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Supercapacitors are well known for their improvised power density compared to batteries. Ongoing research is mainly focused on improving the energy density of supercapacitors by using different electrode material nanocomposites. The recent research has revealed that graphene (G)-polyaniline (PANI) nanocomposite could be a promising material for supercapacitor applications. The supercapacitor is also associated with self-leakage current regardless of any electrode material. The main objectives of the project are to: (i) synthesize highly fabricate supercapacitor based of G-PANI electrode; (ii)
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Koecher, Michael Christian. "Evaluation of Advanced Conductive Nickel Materials for Strain Sensing in Carbon Fiber Reinforced Polymers." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3580.

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Due to their unique properties, carbon fiber reinforced polymers (CFRP) are becoming ever more prevalent in today's society. Unfortunately, CFRP suffer from a wide range of failure modes and structural health monitoring methods are currently insufficient to predict these failures. It is apparent that self-sensing structural health monitoring could be advantageous to protect consumers from catastrophic failure in CFRP structures. Previous research has shown that embedded nickel nanostrand nanocomposites can be used to instantaneously measure strain in carbon fiber composites, but these methods
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Li, Yilong [Verfasser], Brigitte [Akademischer Betreuer] Voit, Petra [Gutachter] Pötschke, and Jürgen [Gutachter] Piontek. "Vapor sensing behavior of sensor materials based on conductive polymer nanocomposites / Yilong Li ; Gutachter: Petra Pötschke, Jürgen Piontek ; Betreuer: Brigitte Voit." Dresden : Technische Universität Dresden, 2020. http://d-nb.info/1227053223/34.

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Olson, Grant T. "Improving Hybrid Solar Cells: Overcoming Charge Extraction Issues In Bulk Mixtures of Polythiophenes and Zinc Oxide Nanostructures." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1257.

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Organic photovoltaics (OPVs) have received a great deal of focus in recent years as a possible alternative to expensive silicon based solar technology. Current challenges for organic photovoltaics are centered around improving their lifetimes and increasing their power conversion efficiencies. One approach to improving the lifetime of such devices has been the inclusion of inorganic metal oxide layers, but interaction between the metal oxides and common conjugated polymers is not favorable. Here we present two methods by which the interactions between polythiophenes and nanostructured ZnO can
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Farghaly, Ahmed A. "Fabrication of Multifunctional Nanostructured Porous Materials." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4189.

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Nanostructured porous materials generally, and nanoporous noble metals specifically, have received considerable attention due to their superior chemical and physical properties over nanoparticles and bulk counterparts. This dissertation work aims to develop well-established strategies for the preparation of multifunctional nanostructured porous materials based on the combination of inorganic-chemistry, organic-chemistry and electrochemistry. The preparation strategies involved one or more of the following processes: sol-gel synthesis, co-electrodeposition, metal ions reduction, electropolymeri
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Yu, Zhong-Zhen. "Procédé d'extrusion réactive appliqué à l'élaboration de mélanges de polymères et de nano-composites." Vandoeuvre-les-Nancy, INPL, 2001. http://www.theses.fr/2001INPL018N.

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Cette thèse porte sur le développement de procédés d'élaboration visant à améliorer d'une part, la ténacité des polymères techniques avec une diminution minimale en module et en contrainte d'écoulement et d'autre part, la conductivité électrique en présence d'une quantité minimale. Deux polymères techniques ont fait l'objet de l'étude concernant l'amélioration de la ténacité : le polyamide 6 (PA 6) et un copolyester (PETG). Le principe était de promouvoir la dispersion d'un élastomère, un poly(ethylene-co-octene) fonctionnalise avec l'anhydride maléique (poeg). Pour cela, on a diminue la dispa
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40

Benhadjala, Warda. "Fiabilité et miniaturisation des condensateurs pour l'aéronautique : de l'évaluation de composants céramique de puissance à l'étude de nanoparticules hybrides céramique / polymère pour technologies enterrées." Thesis, Bordeaux 1, 2013. http://www.theses.fr/2013BOR15271/document.

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L’amélioration des systèmes électroniques pour le déploiement de l'avion tout électrique dépend de la capacité des composants passifs, tels que les condensateurs, à réduire leur volume, leur masse et leur coût, et augmenter leurs performances et leur fiabilité, particulièrement dans l’environnement aéronautique. Dans ce contexte, cette thèse a eu pour objectif l’étude et le développement de nouvelles technologies de condensateurs pour des applications avioniques. Dans la première partie des travaux, nous abordons l’évaluation de condensateurs céramique de puissance. La technologie céramique co
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Wu, Ying-Chieh, and 武英傑. "Preparation and Characterization of Conducting Polymer / Mica Nanocomposites." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/92556283195788111288.

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碩士<br>國立東華大學<br>材料科學與工程學系<br>91<br>The nanocomposites, consisted of polyaniline and layered sericite, were prepared by effectively dispersing the inorganic nano-layers of sericite in the organic polyaniline matrix via in-situ polymerization. First of all, the modified sericite were measured by XRD and determined if it is intercalated with organic agents. The as-synthesized polyaniline-clay lamellar nanocomposites were studied and determined by wide-angle X-ray diffraction , polarizing microscopy , transmission electron microscopy , scanning electron microscopy , infrared spectroscopy , and u
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Hsu, Feng-Hao, and 許峰豪. "Preparation and Characterization of Intrinsic Conducting Polymer/Graphene Nanocomposites." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/95826570644216370340.

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碩士<br>國立中興大學<br>材料科學與工程學系所<br>99<br>Chemical method was the most commonly and simple method to generate lots of graphene. The fabricated graphite oxide and reduced graphene used as a reinforcing material for conducting polymer were characterized by FT-IR、Raman、XRD and TGA analysis. The reduced graphene removed a large number of oxidation function group by reducing agent will become less hydrophilic and be difficult to disperse in solution. In this study, poly(sodium 4-styrenesulfonate)(PSS), an anionic polyelectrolyte, could be used as a surfactant to overcome the dispersion of graphene in sol
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43

Chen, Meng-Zhe, and 陳孟哲. "Dispersion Behavior and Magnetic Property of Magnetic Nanoparticle/Conducting Polymer Nanocomposites." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/asqzr7.

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碩士<br>國立中興大學<br>化學工程學系所<br>107<br>In this study, we systematically investigate the effect of in-situ polymerization conditions on the magnetic nanoparticle dispersion in the poly(N-vinyl carbazole)/Fe3O4 (PNVK/Fe3O4) nanocomposite films, derived by mixing the surface-modified Fe3O4 magnetic nanoparticles with NVK monomer in DMF solvent or DMF/H2O co-solvent. Four parameters, including the nanoparticle concentration, the grafting density, the reaction temperature and the solvent quality, have been considered as key factors in this study for establishing the relationships between the four paratm
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44

Hsiao, Chih-Chung, and 蕭智中. "Novel ZnO Nanorod/Conducting Polymer Nanocomposites: Synthesis, Characterization, and Applications in Piezoelectric Nanodevices." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/62970618195064005752.

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碩士<br>臺灣大學<br>化學工程學研究所<br>98<br>ZnO nanorods/ PEDOT-co-PANI copolymer nanocomposite materials have been synthesized via wet chemical method. The PEDOT-co-PANI copolymer film was prepared by using an oxidative chemical in situ polymerization method. ZnO nanorods on various substrates coated ZnO seed layer have been grown using an hydrothermal process. The ZnO seed layers were deposited by two methods, deposition of a thin film of ZnO particles through sputtering by using RF magnetron sputtering system and spin-coating as-prepared ZnO nanoparticles suspension. The change in morphology, crystalli
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Bhaumik, Madhumita. "Conducting polymer based nanocomposites for removal of fluoride and chromium (VI) from water." 2012. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000922.

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D.Tech. Chemical Engineering<br>This research emphasizes the potential application of conducting polymer based nanocomposites for the remediation of contaminants from water. This study facilitates the preparation of conducting polymer based nanomaterials for the efficient removal of fluoride and toxic chromium(VI) from water. This work also identifies the importance of understanding the physico-chemical properties of the synthesized nanomaterials which greatly influence the materials performance in removing contaminants from water.
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46

Choudhury, Paramita Kar. "Conformation And Charge Transpsort In Conducting Polymers, Carbon Nanotubes And Their Nanocomposites." Thesis, 2010. http://etd.iisc.ernet.in/handle/2005/1987.

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The main motivation in this thesis is to compare the conformation and charge transport in conducting polymers and carbon nanotubes (CNTs) and to investigate those physical properties in their combined form of nanocomposites. It is known that both conducting polymers and carbon nanotubes are intrinsically 1-dimensional systems which consist of delocalized π-electrons. However, the main difference between these is the fact that flexibility of conducting polymers can be varied depending on the extent of conjugation while CNTs are rigid. Hence a comparison of electronic properties as correlated to
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47

Sangeeth, Suchand C. S. "Charge Transport In Conducting Polymers, Polymer-Carbon Nanotube Composites And Devices." Thesis, 2012. http://etd.iisc.ernet.in/handle/2005/2279.

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The Thesis reports charge transport studies on conducting polymers, polymer carbon nanotube composites and organic semiconductor devices. Conducting and semiconducting polymers consisting of π-conjugated chains have attracted considerable attention as they combine the optoelectronic properties of semiconductors with mechanical properties and processing advantages of plastics. The chemical/electrochemical/photodoping of these semiconducting polymers can tune the Fermi levels and conductivity in a controlled way, and hence the properties of devices can be easily tailored to suit in several appl
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48

Saravanan, S. "Moisture Barrier Polymer Nanocomposites for Organic Device Encapsulation." Thesis, 2016. http://etd.iisc.ernet.in/2005/3809.

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The advancement in smart technologies for organic conducting polymers as flexible substrates in LEDs, PVs and solid state lighting necessitates the development of ultra-high barrier films to protect the devices from moisture and oxygen. The current encapsulation methodology of using layers of plastics and inorganic oxides has several deficiencies. Alternatively, the use of single layer of polymer nanocomposites is a promising substitute for these inorganic based encapsulation layers. The use of polymer materials have the advantage of flexibility, active electrodes printability and easy to make
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Lu, Chunhong. "Conductive nickel nanostrand-reinforced polymer nanocomposites." 2013. http://hdl.handle.net/2152/22332.

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Conductive and flexible nanocomposites can have wide applications in textiles, including wearable sensors, antenna, electrodes, etc. The objective of this research is to develop electrically conductive fibers and films that are flexible and deformable for use in textile structures able to accommodate the drape and movement of the human body. To achieve this objective, we evaluate the electrical properties of PEDOT:PSS/nickel nanostrand as well as nylon 6/nickel nanostrand nanocomposites. Nickel nanostrands (NiNS) were first used to reinforce an intrinsically conductive polymer, Poly(3,4-ethyle
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50

Liu, Yu-Chang, and 劉育昌. "Synthesis of ordered conductive polymer/inorganic nanocomposites." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/99988137407006782661.

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碩士<br>國立中央大學<br>化學系<br>85<br>In this investigation, we prepared more ordered polyaniline in the interlayer space of the layer materials and synthesized organic-inorganic nanocomposites by host-guest reactions. Infrared spectra and X-ray diffraction patterns showed that the organic guests are indeed insertedin the interlayer space of layer materials. The intercalation of anilinein HNbTiO5 and HNb3O8 results in two layers of aniline molecules in the interlayer space. When aniline was poly-m
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