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Relevant bibliographies by topics / PVA Nanocomposite

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Dissertations / Theses

Academic literature on the topic 'PVA Nanocomposite'

Author: Grafiati

Published: 7 September 2023

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Dissertations / Theses on the topic "PVA Nanocomposite"

1

Busu, Alice. "Development of PVA/PDA nanocomposite membranes for CO2 capture." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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In this project, composite membranes containing nanoparticles of polydopamine PDA (dopamine polymer) will be manufactured and characterized in view of their use for the separation of CO2. Polysulfone will be used as a polymer matrix support while poly(vinyilalcohol) has been chosen as selective layer material. The work will first focus on the optimization of the manufacturing parameters of nano composite membranes and then on the influence of the integration of PDA nanoparticles in the polymeric support at different concentrations. The final objective is to test the material properties, with

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2

Coskun, Temmuz. "Investigating solid-state supercapacitors constructed with PVA/CNT nanocomposite electrolytes." Thesis, Wichita State University, 2014. http://hdl.handle.net/10057/10951.

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The search for alternative energy generation methods requires development for new energy storage methods as well. The ability to use nanotechnology to achieve high surface area, which is correlated to increased energy storage, brought advancements in supercapacitor applications. Supercapacitors have the potential to charge and discharge quickly and hold as much energy as batteries and other chemical storage devices. By having a completely solid-state supercapacitor, problems with leakage and decay could be avoided. Supercapacitors were assembled from electrodes made by reducing graphene oxide

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3

Gaume, Julien. "Etude du photovieillissement de matériaux nanocomposites pour l'encapsulation de cellules solaires organiques." Thesis, Clermont-Ferrand 2, 2011. http://www.theses.fr/2011CLF22173.

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Ce travail est consacré à l‟étude de la stabilité photochimique de nanocomposites polymère / argile en vue de leur insertion dans un système multicouche organique / inorganique pour l‟encapsulation des cellules solaires organiques. L‟objectif est d‟obtenir des films de nanocomposites polymère / argile flexibles, transparents, pouvant être mis en oeuvre par voie liquide, et photochimiquement stables. Dans une première partie, la caractérisation de nanocomposites à base d‟alcool polyvinylique (PVA) a montré leur aptitude à être insérés dans un système multicouche, notamment en ce qui concerne le

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4

Mabrouk, Mohamed Mostafa. "Preparation of PVA / Bioactive Glass nanocomposite scaffolds : in vitro studies for applications as biomaterials : association with active molecule." Thesis, Rennes 1, 2014. http://www.theses.fr/2014REN1S063/document.

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Le Poly Vinyl Alcohol (PVA) a été associé aux verres élaborés dans un système quaternaire (BG) 46S6 par les procédés cités (fusion, sol-gel et sacffolds). Différents paramètres intervenant dans les synthèses des verres bioactifs ont été étudiés, nous citons à titre d’exemple : la température, le pH, la taille des particules, le rapport Polymère / verres, la microstructure, la porosité et la biodégradation. Les caractéristiques thermiques des verres élaborés ont été également déterminées après chaque synthèse par analyse thermique différentielle (DSC/TG, DTA/TG). Ainsi, la température de fusion

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5

Silva, Dany Geraldo Kramer Cavalcanti e. "Desenvolvimento de nanocomp?sito (hidroxiapatita/ poliuretano) pela gela??o (gelling) de poli ( ?lcool vin?lico) (PVA) para remo??o de metais pesados." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15605.

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Made available in DSpace on 2014-12-17T14:57:57Z (GMT). No. of bitstreams: 1 DanyGKCS_TESE.pdf: 7629414 bytes, checksum: 0319ec74d00ba690b4f1a60f7aab52d1 (MD5) Previous issue date: 2013-10-18<br>Removing microcontaminants from effluents is a challenge today, because of its high cost and low efficiency, especially in the treatment of effluents containing heavy metals. An alternative that has emerged is the use of biodegradable nanocomposites, which exhibit good removal and recovery performances, in addition to its low cost. With this in mind, the present study aimed to develop and chara

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6

Souza, Sivoney Ferreira de [UNESP]. "Obtenção de nanofibras de curauá e aplicação como reforço em compósitos baseados em PVA." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/90547.

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Made available in DSpace on 2014-06-11T19:24:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-09-03Bitstream added on 2014-06-13T18:52:26Z : No. of bitstreams: 1 souza_sf_me_botfca.pdf: 1653750 bytes, checksum: 3aa87de3ba9ede42d6a64a6e7aef2e61 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>O momento atual de maior preocupação ambiental global, a crescente escassez dos recursos fósseis, bem como as novas regulagens ambientais força a busca por materiais que sejam renováveis e compatíveis com o ambiente. Novos materiais estão sendo desenvolvidos a partir de

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7

Souza, Sivoney Ferreira de 1982. "Obtenção de nanofibras de curauá e aplicação como reforço em compósitos baseados em PVA /." Botucatu : [s.n.], 2010. http://hdl.handle.net/11449/90547.

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Orientador: Alcides Lopes Leão<br>Banca: Elisabete Frollini<br>Banca: Pedro de Magalhães Padilha<br>Resumo: O momento atual de maior preocupação ambiental global, a crescente escassez dos recursos fósseis, bem como as novas regulagens ambientais força a busca por materiais que sejam renováveis e compatíveis com o ambiente. Novos materiais estão sendo desenvolvidos a partir de várias fontes naturais e, entre eles a celulose é o mais abundante dos polímeros naturais e um dos mais utilizados. Logo, o objetivo desta dissertação de mestrado foi obter nanofibras de celulose tendo como fonte a fibra

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8

Rasselet, Damien. "Etude de nanocomposites basés sur des alliages PLA/PA11." Thesis, IMT Mines Alès, 2019. http://www.theses.fr/2019EMAL0001/document.

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L’acide polylactique (PLA) est l’un des polymères biosourcés qui suscite le plus d’intérêt, mais ses propriétés thermomécaniques nécessitent d’être améliorées. Pour ce faire, les méthodes les plus utilisées et étudiées sont de le mélanger avec d’autres polymères ou bien d’y ajouter des charges minérales nanométriques (nanoparticules), afin de constituer un nanocomposite à matrice PLA. C’est dans la combinaison de ces deux approches que s’inscrivent ces travaux de thèse, consacrés à l’élaboration et à la caractérisation des propriétés de nanocomposites à base d’un alliage de PLA et de polyamide

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9

Piao, Haiyuan. "Microbial-derived cellulose-reinforced biocomposites." Thesis, University of Canterbury. Mechanical Engineering, 2006. http://hdl.handle.net/10092/1139.

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The preparation and characterisation of novel nano-scale biodegradable biocomposite materials, consisting of bacterial cellulose (BC) in a poly(lactic acid) (PLA) matrix, are investigated. BC exhibits high purity, high mechanical strength and an ultra-fine fibrous 3D network structure, while PLA is low cost, biodegradable matrix material derived from natural resources. In this work, composites of BC reinforced PLA were prepared using a solution exchange process and compression molding. The microstructure of the raw materials and composites was characterised using scanning electron microscopy (

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10

Ocwelwang, Atsile Rosy. "Photocatalytic activity and antibacterial properties of Ag/N-doped TiO2 nanoparticles on PVAE-CS nanofibre support." Thesis, University of Fort Hare, 2012. http://hdl.handle.net/10353/d1006794.

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Lack of potable water is one of the major challenges that the world faces currently and the effects of this are mainly experienced by people in developing countries. This has therefore propelled research in advanced oxidation technologies AOTs to improve the current water treatment methods using cost effective, non toxic and efficient treatment methods. Hence, in this study the sol-gel synthesis method was used to prepare TiO2 nanoparticles that were photocatalytically active under UV and visible solar light as well as possessing antibacterial properties. Silver and nitrogen doping was carried

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