Thematische Bibliographien / Electroactive membranes / Dissertationen
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Dissertationen zum Thema „Electroactive membranes“

Autor: Grafiati
Veröffentlicht am 9. September 2021
Zuletzt aktualisiert am 29. Juli 2025

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1

Schultz, Alison. "Functional Block Copolymers via Anionic Polymerization for Electroactive Membranes." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/51115.

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Ion-containing block copolymers blend ionic liquid properties with well-defined polymer architectures. This provides conductive materials with robust mechanical stability, efficient processability, and tunable macromolecular design. Conventional free radical polymerization and anion exchange achieved copolymers containing n-butyl acrylate and phosphonium ionic liquids. These compositions incorporated vinylbenzyl triphenyl phosphonium and vinylbenzyl tricyclohexyl phosphonium cations bearing chloride (Cl), or bis(trifluoromethane sulfonyl)imide (Tf2N) counteranions. Differential scanning calori
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2

Bennett, Matthew Damon. "Electromechanical Transduction in Ionic Liquid-Swollen Nafion Membranes." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/29421.

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Traditionally, water has been used as the diluent for ionomeric polymer transducers. The water mobilizes the counterions within the polymer and allows electromechanical transduction to occur. However, these water-swollen devices have limited stability when operated in a non-aqueous environment. In this work, ionic liquids are demonstrated as viable diluents for ionomeric polymer transducers based on Nafion membranes. Ionic liquids are molten salts that are highly thermally stable and have an immeasureably low vapor pressure. Therefore, the ionic liquid-swollen transducers exhibit enhanced
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3

Crespilho, Frank Nelson. "Membranas eletroativas nanoestruturadas: estudo de transporte de carga e imobilização enzimática." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/75/75131/tde-25102007-111702/.

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Esta tese aborda quatro tópicos fundamentais para o desenvolvimento e aplicação de membranas eletroativas nanoestruturadas (MENs): (i) síntese e caracterização de nanopartículas (Nps) de prata, ouro e platina encapsuladas em moléculas de dendrímero poliamidoamina geração 4 (PAMAM); (ii) preparação de filmes automontados contendo PAMAM e Nps de ouro (PAMAM-Au); (iii) preparação de MENs utilizando sistema core-shell PAMAM-Au@Me, onde Me é um mediador redox; (iv) imobilização enzimática em MENs e estudos biocatalíticos associados a processos eletroquímicos. As Nps foram caracterizadas observando-
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4

Brevnov, Dmitri A. "Development and application electrochemical and spectrophotometric methods based upon AC potential modulation for characterization of hybrid bilayer membranes and electroactive self-assembled monolayers supported on gold electrodes." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1462.

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5

Cetraro, Giampaolo. "High-fidelity flow simulations of electroactive membrane wings." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/416114/.

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This work is inspired by natural flyers such bats and insects. They show outstanding aerodynamic performance due to their flexible membrane wings and their ability to control its stiffness to improve manoeuvrability. In this work the fluid-structure coupling as well as the physics and the control of electroactive membranes have been simulated in a multiphysics framework. This study has allowed not only to have an insight of the flow mechanisms which allow a membrane wing to enhace lift and delay stall at high angles of attack but also lays the basis of the understanding of how an active contro
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6

Chen, PoYun. "Role of Ionic Liquid in Electroactive Polymer Electrolyte Membrane for Energy Harvesting and Storage." University of Akron / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=akron1590688110146547.

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7

Park, Jong Keun. "Anisotropic Morphologies and Properties in Perfluorosulfonate Ionomer-Based Materials." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/40486.

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The overall goal of this investigation was to elucidate specific structure-property relationships in perfluorosulfonate ionomers (PFSIs)-related materials. The project can be broken into two primary foci. First, we explored the current state of understanding related to morphology-property relationships in PFSIs with specific attention to the nano-scale organization of the ionic and crystalline domains. Specifically, the effect of uniaxial orientation on the structure and transport properties of Nafion® membranes was examined. Small angle X-ray scattering (SAXS) experiments on dry membrane
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8

Chatillon, Yohann. "Méthodes électrochimiques pour la caractérisation des piles à combustibles de type PEM en empilement." Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0195/document.

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La pile à combustible apparaît comme une technologie prometteuse pour la conversion énergétique à faible impact environnemental mais sa commercialisation à grande échelle nécessite de relever certains défis économiques et technologiques. Tout d'abord, pour fonctionner, la pile a besoin de systèmes (compresseurs, convertisseurs,...) parfois volumineux et coûteux en énergie. Ensuite, le prix de certains éléments constituants la pile reste élevé car ce sont des produits à haute valeur technologique utilisant des matériaux parfois très onéreux (membrane polymère, couche catalytique,...). L'optimis
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9

Costa, Carlos Miguel Silva. "Electroactive polymer based porous membranes for energy storage applications." Doctoral thesis, 2014. http://hdl.handle.net/1822/35659.

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Tese de doutoramento em Ciências (ramo de conhecimento em Física)<br>In the field of mobile applications the efficient storage of energy is one of the most critical issues. Lithium ion batteries are lighter, cheaper, show higher energy density (210Wh kg-1), no memory effect, longer service-life and higher number of charge/discharge cycles than other battery solutions. The separator membrane is placed between the anode and cathode and serves as the medium for the transfer of charge, being a critical components for the performance of the batteries. Polymers such as PVDF and its copolymers poly(
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10

Rêgo, Pedro Maria Caetano Lopes de Carvalho e. "Production and Characterization of Electroactive Polymeric Membranes by Electrospinning." Master's thesis, 2019. http://hdl.handle.net/10362/91956.

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In the last decades the development in miniaturization of devices has become a very important topic for the future of technology. Although the miniaturization of devices has been successful in de-creasing the size of devices, the same can not be said about their energy sources. Recent work in the nanomaterials filed has started to show some progress in the towards self-powered energy sources that generate power form the environment that surrounds them. This energy can be scavenged from solar, thermal, mechanical, etc. The advances in this area shows that is possible to generate this environmen
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11

Huang, Kuan-Yeh, and 黃冠燁. "Preparation and Properties of Electroactive Polyimide Membranes, Coatings and Electrospray Particles." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/77897904976657235528.

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博士<br>中原大學<br>化學研究所<br>97<br>In this study, a non-coplanar dianhydride molecule, 2,2-bis[4-(dicarboxyphenoxy)phenyl]propane dianhydride (BSAA) was reacted with emeraldine base (EB) form of amine-capped aniline trimer (ACAT) units to give mechanically enhanced electroactive polyimide (EPI) with higher weight-average molecular weight of ~ 140,000 by thermal and chemical imidization. It should be noted that the EPI (BSAA-ACAT) membrane exhibited storage modulus of ~ 3 GPa at room temperature based on the dynamic mechanical analysis (DMA). Concentration effect of conjugated diamine segment, (i.e.
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12

Jhuo, Yu-Sian, and 卓育賢. "Preparation and Properties of Dopable Electroactive Polyimide Membranes、Microspheres and Nanofibers." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/w28364.

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碩士<br>中原大學<br>化學研究所<br>99<br>In this study, we combine the amine-capped aniline trimer (ACAT) and 4,4’-(4,4’-Isopropylidene-diphenoxy)bis(phthalic anhydride) (BSAA) to prepare the Electroactive Polyimide (EPI), because EPI have electroacitve segment and imide structure, it is expected to integrate these advantages, such as ACAT redox and dopable properties and the nature of the polyimide of high heat resistance and strong mechanical properties, base on the above, we prepare EPI by various method to fabricate : (1) Membranes (2) Microspheres (3) Nanofibers, and applied in different field. 　　In
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13

Shieh, Ching-Chen, and 謝青城. "Preparation and Properties of Ultra Low Dielectric Constant Electroactive Polyimide Membranes." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/96506744932322411933.

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碩士<br>中原大學<br>化學研究所<br>99<br>In this study, a non-coplanar dianhydride molecule, 2,2-bis[4- (dicarboxyphenoxy)phenyl]propane dianhydride (BSAA) was reacted with emeraldine base (EB) form of amine-capped aniline trimer (ACAT) units to give mechanically enhanced electroactive polyimide (EPI). The 1,3-Bis(3-aminopropyl)- tetramethyldisilocane(UCT) was used to control the toughness of EPI film. In other way, the porous EPI with ultra low dielectric constant was prepared by using particulate leaching method. Different electroactive, thermal properties, thermal conductivity, and dielectric propertie
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14

Kuan, Chi-En, and 官祺恩. "Preparation and Dielectric Properties of Polyaniline Oligomers Modified Barium Titanate Electroactive Polyimide Membranes." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/pt752b.

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碩士<br>中原大學<br>化學研究所<br>103<br>This paper presents a method for the production of high dielectric constant substrate. A non-coplanar dianhydride molecule (4,4-bis [4 - (dicarboxyphenoxy) phenyl] propane anhydride (BSAA) and emeraldine base (EB) were reacted by oxidative coupling of anti-step synthesis. In the manufacturing process, there are 2 kinds pure bariµm titanate and modified bariµm titanate were synthesized with polyimide, the particle size of the batio3 was 0.1 and 0.7 µm, respectively Dielectric constant of 32 and 49 are obtained at 50 Vol% content under 0.1 and 0.7 µm in particle s
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15

Su, Yu-An, and 蘇佑安. "Preparation and Application Studies of Electroactive Polymer Functioned as Gas Separation Membranes and Anticorrosion Coatings." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/75512508419099182878.

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碩士<br>中原大學<br>化學研究所<br>96<br>This work reports the preparation and application studies of electroctive polymer, and this thesis can be mainly divided into two parts. The first part reports the free-standing membrane, a serious of electron withdrawing group substitution aniline and its dervivatives copolymer. Those membranes which have been characterized by Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR-FTIR), 1H-Nuclear magnetic resonance (1H-NMR), element analyzer (EA), gel permeation chromatography (GPC), UV-Visible and Conductivity via addition CaCl2/HCl(aq) by ch
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16

Chamiço, Sofia Amorim Almeida. "Development and characterization of poly-meric membranes for electromechanical actuation." Master's thesis, 2016. http://hdl.handle.net/10362/97474.

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Bioelectronics is a field still in development that will have a positive impact in individuals’ life worldwide creating promises and excitement. The organic materials “soft” nature offers better mechanical compatibility with tissue than traditional electronic materials, and have natural com-patibility with mechanically flexible substrates. One of those organic materials, PEDOT:PSS, has emerged in recent years as a champion material in some applications such as artificial muscles and as bending actuators for autofocus micro lens applications. This work aims at the research and production of th
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17

Huang, Jane-Yu, and 黃貞瑜. "Preparation and Properties of Electroactive Polyimide-Titania Hybrid Sol-Gel Membranes Through Small Basic Molecule-Catalyzed Route." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/64805496994335423647.

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碩士<br>中原大學<br>化學研究所<br>98<br>In this study, a series of elctroactive polyimide-titania hybrid sol-gel materials were first successfully prepared under the incorporation of small basic molecules-catalyzed route through conventional thermal imidization reactions. Typically, tetraethyl orthotitanate (Ti(OEt)4) was used as inorganic sol-gel precursor reacting with coupling agent (acetylacetone; ACAC) to give inorganic solution. Subsequently, amine-capped aniline trimer (ACAT) functioned as small organic base catalyst for sol-gel reaction and diamine monomer for the preparation of electroactive pol
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18

LI, Yu-Min, and 李煜閔. "Synthesis, characterization of Solvent-based and Water-based electroactive polyurethane elastomer membrane and their application in Gas separation and pervaporation." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/57vv4u.

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碩士<br>中原大學<br>化學研究所<br>102<br>In this study, the electroactive amine-capped aniline trimer (ACAT) was incorporated into solvent-based and waterborne polyurethane (PU) to give several electroactive PU membranes, which with high mechanical strength, better air permeability, simultaneously. For the synthesis of ACAT, aniline was reacted with 4,4-Aminodiphenylamine followed by characterized by Fourier transform infrared spectroscopy (FTIR), proton-nuclear magnetic resonance (1H NMR) spectroscopy and mass spectrometry (ESI-TOF-MASS). Subsequently, for the preparation of electroactive waterborne po
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