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Dissertations / Theses on the topic 'TGA/DSC'

Author: Grafiati

Published: 10 September 2021

Last updated: 29 July 2025

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1

Hoffman, Roland. "Measuring ΔH Using DSC, TGA & DTA". TopSCHOLAR®, 1990. https://digitalcommons.wku.edu/theses/2500.

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The purpose of this study was to obtain greater accuracy in the measurement of the heat of reaction by combining data from various thermal analysis techniques. Conventional equations that calculate heat of reaction are limited because they do not take in to account mass change. Therefore, an enhanced equation was developed to integrate mass (weight) change to provide greater accuracy. The path chosen to implement this new equation employed simultaneous Thermogravimetric / Differential Thermal Analysis (TG/DTA) that could provide both ΔT and weight data simultaneously. Computer programs were wr

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2

Gundogar, Sati Asli. "Thermal Characterization And Kinetics Of Crude Oils By Tga And Dsc Methods." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611502/index.pdf.

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In recent years, the application of thermal analysis to study the combustion and pyrolysis behavior of fossil fuels has gained a wide acceptance because of its significance for industry and economy. In this thesis, the thermal and kinetic analysis of different origin crude oil samples are performed by two well-known thermal analysis techniques: Differential Scanning Calorimetry (DSC) and Thermogravimetry (TG/DTG). The investigation of combustion and pyrolysis behaviors, kinetic analysis of oil samples and the determination of heating rate effect are the main objectives of this study. Six diffe

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3

Gul, Kiymet Gizem. "Thermal Characterization And Kinetic Analyis Of Sara Fractions Of Crude Oils By Tga And Dsc Methods." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613614/index.pdf.

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In this thesis, four different crude oil samples and their saturate, aromatic and resin fractions were analyzed by two different thermoanalytical methods, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The experiments were performed at three different heating rates (5, 10 and 15 &deg<br>C/min) under air atmosphere. Same gas flow rate and same pressure were applied to all samples. The aim is to determine the kinetic analysis and combustion behavior of crude oils and their fractions and also determining the effect of heating rate on all samples. For all samples

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4

Le, Tan. "Kemin bakom framtidens avgasrening : En studie av ureasönderfall under kvävgasatmosfär." Thesis, Uppsala universitet, Institutionen för materialkemi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-155896.

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The purpose of this work was to provide a better understanding of urea’s decomposition and byproduct formation in an SCR system on heavy trucks. In my experimental setup with TGA-DSC-FTIR (a combination of two thermal analysis methods and a method for gas phase detection), an FTIR method for urea in the gas phase was developed for the qualitative and quantitative determination of urea and its decomposition products. Chemicals such as urea, biuret, cyanuric acid and melamine of p.a. quality were used in this method development. Beforehand, there was no FTIR method available to detect these subs

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5

Lucius, Ruth A. "Assessing Corn Quality And Transformation During Nixtamalization: A Physico-Chemical Approach." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1231442056.

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6

Mazzon, Elena. "Développement, étude physico-chimique et optimisation de mousses polymères biosourcées." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT197.

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Ce travail de thèse porte sur le développement d’une nouvelle génération de mousses polymères biosourcées capables de satisfaire la fonction d’âme alvéolaire et structurale de pièces automobiles. Les formulations époxy choisies comme base polymère reposent sur deux différents prépolymères époxy, l’huile de lin époxydée (ELO) et le glycérol époxydé (GE). Ces derniers, associés en proportions variables, sont réticulés avec deux différents durcisseurs : l’isophorone diamine (IPDA) ou l’anhydride méthyl tétrahydrophtalique (MTHPA). Les formulations ternaires « ELO – GE – durcisseur » ont été carac

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7

Fournier, Teddy. "Les mélanges polyamides et lignine, une alternative renouvelable pour la réalisation de nouvelles fibres organiques et de précurseurs pour fibres de carbone." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0866/document.

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La fibre de carbone (FC) est un matériau incontournable de l’industrie composite haute performance. Elaborée dans sa grande majorité à partir d’un précurseur couteux et d’origine fossile, le Polyacrylonitrile (PAN), elle est principalement utilisée dans des secteurs à forte valeur ajoutée. Des précurseurs bio-sourcés et peu couteux alternatifs sont envisagés afin de s’affranchir du PAN pour l réduction de poids dans l’industrie automobile. La lignine, depuis longtemps identifiée parmi les précurseurs d’origine renouvelable bon marché, est aujourd’hui disponible en quantité et qualité industrie

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8

Topa, Ece Hatice. "Thermal Characterization And Kinetics Of Diesel, Methanol Route Biodiesel, Canola Oil And Diesel-biodiesel Blends At Different Blending Rates By Tga And Dsc." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612460/index.pdf.

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Application of thermogravimetric analysis to the renewable energy sources is a novel study and it has been becoming attractive by the researchers in recent years. In this thesis, thermal and kinetic properties of biodiesel as new energy source, diesel and canola oil have been analyzed by using very popular thermogravimetric analysis methods which are<br>Differential Scanning Calorimetry (DSC) and Thermogravimetry (TGA/DTG). The main aim of the study is to observe the combustion and pyrolysis behaviour of methanol route biodiesel and diesel blends at different blending rates. Additionally, comb

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9

Cristallini, Pietro Paolo. "Atom transfer radical polymerization di monomeri polari: studio delle condizioni utili per uno scale-up industriale." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13377/.

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In questo progetto è stata studiata la sintesi di copolimeri a blocchi poli(N-vinil caprolattame)-b-poli(vinil acetato) (PNVCL-b-PVAc) mediante Atom Transfer Radical Polymerization (ATRP). In visione di una futura produzione di questi materiali a livello industriale, è stato ritenuto interessante studiare questo processo utilizzando un solvente con alto valore di flash point, in particolare il polipropilen glicole Mn=1000g/mol (PPG-1000) (flash point 229°C). Inoltre, si è scelto di lavorare a temperature comprese tra 50 e 80°C, in modo da poter asportare il calore di reazione utilizzando sempl

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10

Paliwal, Vaishali. "Study of lead sorption on magnetite at high temperatures." Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5445/.

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Lead's uptake on magnetite has been quantitatively evaluated in the present study at a temperature of 200°C and pH of 8.5 with lead concentrations ranging from 5 ppm to175 ppm by equilibrium adsorption isotherms. The pH independent sorption behavior suggested lead sorption due to pH independent permanent charge through weak electrostatic, non-specific attraction where cations are sorbed on the cation exchange sites. The permanent negative charge could be a consequence of lead substitution which is supported by increase in the lattice parameter values from the X-ray diffraction (XRD) results. D

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11

Plunkett, Richard. "Assessment of residual composite properties as influenced by thermal mechanical aging." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-11072008-063142/.

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12

Jeske, Helene [Verfasser], and Rainer [Akademischer Betreuer] Marutzky. "Methodenetablierung und Untersuchungen der Pyrolyseprozesse intumeszierender Brandschutzbeschichtungen mittels gekoppelter thermogravimetrischer und -mechanischer Analyse (TGA-FTIR-MS und TMA) sowie DSC-Mikroskopie / Helene Jeske ; Betreuer: Rainer Marutzky." Braunschweig : Technische Universität Braunschweig, 2012. http://d-nb.info/1175823155/34.

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13

Lenti, Mattia. "Triethyl citrate-based oligomeric plasticizers for poly(lactic acid)." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15760/.

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Poly(lactic acid) (PLA) is a bio-based, biocompatible, biodegradable polymer that can be produced from renewable resources including starch from corn and potatoes, sugar from beets and sugar cane. Poly(lactic acid) and its copolymers have attracted significant attention in environmental, biomedical, and pharmaceutical applications and as alternatives to petroleum-based polymers. Due to the relatively high glass transition temperature (55°C) and low crystallization rate which respectively result in a brittle behaviour and low production efficiency, the use of a plasticizer is critical to meet t

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14

Kostková, Jana. "Porovnání vlastností dvou výrobků pro umělá kluziště na bázi kaučuku etylén-propylen-dien." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2015. http://www.nusl.cz/ntk/nusl-217150.

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This master thesis deals with characterization of two black and white products based on ethylene-propylene-diene rubber (EPDM) used for skating rink. Products marked with A and are different in their diameter of circular tubes trough which cooling medium passes and also in the distance of these tubes. Both of materials were characterized in order to determine whether it is the EPDM and how are they different. The characterization methods were used: differential scanning calorimetry, thermogravimetric analysis, attenuated total reflectance Fourier transform infrared spectroscopy, tensile test,

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15

Alasaad, Khatoon Hamza. "Kanamycin: Solid-State Characterization and Hydrate Formation." University of Toledo Health Science Campus / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=mco1576193333612323.

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16

Canto, Rodrigo Bresciani. "Estudo teórico e experimental dos processos de compactação e sinterização do politetrafluoretileno (PTFE)." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/18/18135/tde-10022017-123542/.

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Este trabalho apresenta um estudo dos processos de prensagem e sinterização do politetrafluoretileno (PTFE) com o objetivo principal de investigar a influência dos parâmetros desses processos na microestrutura e nas propriedades mecânicas do material após sinterização. O PTFE faz parte do grupo dos termoplásticos, mas assim como outros polímeros de alto peso molecular, apresenta elevada viscosidade no estado fundido que impede sua utilização em moldagem por injeção, e seu processamento é realizado por compactação a frio do pó polimérico seguida de sinterização. No processo de sinterização é ap

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17

Venumuddala, Hareesha Reddy. "Study of Drug Delivery Behavior Through Biomembranes Using Thermal And Bioanalytical Techniques." Cleveland State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=csu1295472144.

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18

Askanian, Haroutioun. "Etude de la durabilité de matériaux respectueux de l'environnement / biocomposites." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2011. http://tel.archives-ouvertes.fr/tel-00661106.

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Ce travail de thèse s'inscrit dans les thèmes de la photodégradation et de la biodégradation de polymère pouvant être ou non d'origine renouvelable. Il a pour principal objectif d'étudier la durabilité photochimique de différents polymères ou mélanges de polymères utilisés en particulier dans l'agriculture et donc soumis à un vieillissement climatique. La structure chimique des polymères est un des principaux paramètres susceptible d'influencer la photodégradation. Un ensemble de (co)polyesters comportant des unités aliphatiques, cycliques et / ou aromatiques a été sélectionné dans le but d'ex

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19

Lenzi, Luca. "Valutazione dell’adenina come indurente da fonte rinnovabile per resine epossidiche commerciali e per la produzione di materiali compositi." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19228/.

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Le resine più utilizzate industrialmente per la produzione di materiali compositi sono quelle epossidiche a base di diglicidil etere del bisfenolo A. Tipicamente, a livello industriale vengono utilizzate diammine sintetizzate da precursori tossici per l’ambiente e per l’uomo. Prendendo atto dell’intrinseca pericolosità di questi sistemi, sono state valutate delle alternative per rendere il processo di produzione dei materiali compositi più sostenibile e sensibile verso l’ambiente e la salute degli operatori. Questo progetto di tesi di laurea sperimentale è il proseguimento di un lavoro precede

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20

Gherase, Dragos. "TADDOLs and derivatives : synthesis and applications in enantioselective processes." Thesis, Aix-Marseille 3, 2011. http://www.theses.fr/2011AIX30040.

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Dans cette thèse les résultats dans le domaine de la synthèse des dérivée des TADDOL et leur capacité d’induction chirale sont présentés. Une librairie des TADDOLs a été synthétisée et une analyse conformationnelle par VCD a été faite. Ces composés enantiopurs ont été testés dans la réaction de cyanosilylation enantioselective en donnant des résultats moyens. En partant de TADDOL nous avons synthétisé des dérivée phosphorés, des amines et des (thio)urées. Les dérivés de P(III) ont été utilisés comme ligands pour le palladium dans l’alkylation allylique asymétrique et les amines dans le réarran

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21

Morais, Inês Machado Sousa de. "Influência da dessilicação de zeólitos na pirólise catalítica do polietileno." Master's thesis, Faculdade de Ciências e Tecnologia, 2014. http://hdl.handle.net/10362/13100.

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Dissertação para obtenção do Grau de Mestre em Engenharia Química e Bioquímica<br>Neste trabalho foram realizadas análises à degradação térmica e degradação catalítica de polietileno de alta densidade (PEAD) e de resíduos plásticos de cabos eléctricos, utilizando técnicas de Termogravimetria (TGA) e Calorimetria Diferencial de Varrimento (DSC). Analisaram-se amostras de polietileno de alta densidade puro e do mesmo polímero com vários catalisadores. Analisaram-se também amostras de resíduos plásticos de cabos eléctricos (mistura de polietileno, polipropileno e outros compostos), sem e com ca

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22

Spier, Vivian Cristina. "Caracterização espectroscópica e cromatrográfica de copoliésteres biodegradáveis." Universidade do Estado de Santa Catarina, 2005. http://tede.udesc.br/handle/handle/1596.

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Made available in DSpace on 2016-12-08T17:19:14Z (GMT). No. of bitstreams: 1 Capa.pdf: 33668 bytes, checksum: d1e9564709d38250640540f84c86c175 (MD5) Previous issue date: 2005-07-29<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The recycling of poly(ethylene terephthalate) (PET) can be carried through by different techniques, one of them is the chemical recycling, where new aliphatic-aromatic copolymers are synthesized from melt reaction of the PET post-consumer with aliphatic homopolymers. The aliphatic polyesters, such as the poly(ethylene adipate) (PEA) are biodegradabl

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23

Šméralová, Ester. "Hydratace biokolidů - kalorimetrická studie." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-402122.

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Presented master's thesis focuses on the study of hydration of selected biocolloid substances, specifically humic substances (humic acids and fulvic acids), hyaluronic acid with three different molecular weight, chitosan and dextran. Interaction of biocolloids with water was studied by different methods. The effect of solubility, structure, functional groups in molecule on sorption and hydration ability of these biocolloids was investigated. In the case of hyaluronan the influence of molecular weight was also study. Differential scanning calorimetry DSC and perfusion calorimetry give results o

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24

Pelat, Giulia. "Analisi Calorimetrica di esplosivi non convenzionali utilizzati per atti malevoli." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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L’obiettivo della tesi è stato la valutazione dell'efficienza di un IED (Improvised Explosive Device), ossia esplosivi realizzati artigianalmente. Da una analisi bibliografica è emerso che uno dei più comuni IED è l’ANFO (Ammonium Nitrate + Fuel Oil). Si è analizzato inizialmente una miscela costituita da Nitrato di Ammonio e Nonano, scelto come componente rappresentativo dei combustibili, a cui è stato aggiunto Carbonato di Calcio per valutare il suo effetto inertizzante. Analizzando infine un fertilizzante industriale (BCR178) composto principalmente da Carbonato di Calcio e Nitrato di A

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25

Zanini, Riccardo. "Studio dell’adenina come indurente per resine epossidiche e produzione di materiali compositi da fonti rinnovabili." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19235/.

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A causa di una maggiore preoccupazione ambientale, la ricerca si sta muovendo verso lo sviluppo di nuovi prodotti bio-based. Il progetto è stato incentrato sulla possibilità di produrre materiali compositi utilizzando un sistema resina-indurente interamente ottenuto da fonti rinnovabili con fibre naturali totalmente green e sintetiche. In particolare, è stata studiata la possibilità di utilizzare l’adenina, una molecola atossica e derivante da fonte rinnovabile, per la produzione di compositi con fibre di lino, juta, carbonio vergine e riciclato con resina epossidica da fonte bio. In particola

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26

Si, Kun. "Kinetics and Mechanism of Vinyl Chloride Polymerization: Effects of Additives on Polymerization Rate, Molecular Weight and Defect Concentration in the Polymer." online version, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=case1168382967.

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27

Mohammadzadeh, Maryam. "Characterization of recycled thermoplastic polymers." Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-19650.

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In this study thermal and mechanical properties and chemical structure of four differentpolymers (PE, PP, polyASA and PVC) were investigated to find out if the recycled polymershad the same properties and can be used in the same applications as the virgins or not.FT-IR was used for investigation of chemical structure. TGA, DSC and thermal stability wereused to compare the thermal properties. Tensile test also used to examine the mechanicalproperties.All the tests showed the recycling process is not done completely well. The differences inresults for virgins and recycled samples are the reasons

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28

Ricci, Andrea. "Thermoplastic lignin esters as polymeric plasticizers for bioplastics." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/24906/.

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In this thesis, a sustainable and scalable process for modifying the structure of technical lignin to make it suitable for mixing with common bioplastics is studied. More specifically, this project deals with the development of a method of grafting fatty acids onto lignin. First, an updated state of the art concerning the processes for lignin production and its esterification is introduced and thoroughly discussed. Next, the materials and methods used to perform one-pot synthesis on lignin are described. The grafting process is initially optimized using a model reaction; afterwards, these cond

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Antoni, Per. "Functional Dendritic Materials using Click Chemistry : Synthesis, Characterizations and Applications." Doctoral thesis, KTH, Fiber- och polymerteknik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4808.

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Förfrågan efter nya och mer avancerade applikationer är en pågående process vilket leder till en konstant utveckling av nya material. För att förstå relationen mellan en applikations egenskaper och dess sammansättning krävs full förståelse och kontroll över materialets uppbyggnad. En sådan kontroll över uppbyggnaden hos material hittas i en undergrupp till dendritiska polymerer som kallas dendrimerer. I den här doktorsavhandlingen belyses nya metoder för att framställa dendrimer med hjälp av selektiva kemiska reaktioner. Sådana selektiva reaktioner kan hittas inom konceptet klickkemi och har i

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Gomes, Hastenreiter Lara Lopes. "Biodegradation and ageing of bio-based thermosetting resins from lactic acid." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-23320.

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The need for replacing petroleum-based polymers has been increasing and bio-based polymers prove to be a suitable solution. The aim of this thesis was to synthesize bio-based resins with different chemical architectures to evaluate the effect of the structure on the properties and on their response to ageing and biodegradation. For this, three different bio-based thermoset resins have been synthesised by reacting one of three distinct core-molecules with lactic acid. The options of core-molecules chosen for this work were ethylene glycol, glycerol and pentaerythritol. Lactic acid was first rea

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Pampanini, Marco. "Caratterizzazione di materiali compositi rinforzati con fibra naturale." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/22101/.

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Questa tesi si pone l'obiettivo di studiare e caratterizzare materiali compositi rinforzati con fibra di lino, con particolare attenzione rivolta al confronto tra due diversi tessuti pre-impregnati in resina epossidica. Questi materiali stanno avendo una grande importanza in settori come quello automotive, dove la loro leggerezza e le proprietà meccaniche discrete si stanno facendo spazio tra le ormai usatissime fibre di carbonio e di vetro. Inoltre, il fattore principale per cui molte organizzazioni sportive e produttori di veicoli sono interessati a questi materiali, è sicuramente quello a

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Draghetti, Michela. "Fibre naturali nel settore dei compositi: confronto fibre di lino vs. fibre di carbonio." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18602/.

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I materiali compositi possiedono proprietà funzionali e di resistenza sempre più performanti grazie alla natura dei rinforzanti in fibra di carbonio, i quali però sono caratterizzati da criticità relative al processo di trasformazione altamente energivoro e dispendioso, all’inquinamento collegato alla produzione delle fibre e al trattamento di sizing, nonché alla difficoltà nello stadio di separazione dei costituenti del manufatto composito e del conseguente riciclo. A causa di queste problematiche sono stati introdotti in produzione materiali a matrice epossidica rinforzata con fibre di lino

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33

Bondi, Edoardo. "Membrane elettrofilate di cheratina e poli(butilene succinato): effetti della composizione della miscela sulle proprietà chimico-fisiche delle membrane e sulla cinetica di rilascio di farmaci." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23187/.

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In ambito biomedicale una delle applicazioni che ad oggi sta riscuotendo un interesse crescente è lo studio di dispositivi performanti per il rilascio controllato di farmaci. La realizzazione di materiali nanofibrosi a base di polimeri di origine naturale e sintetica costituisce una strada molto interessate. In particolare, la cheratina, che può essere ricavata da un’ampia quantità di sottoprodotti delle industrie zootecniche e tessili, presenta ottima biocompatibilità e caratteristiche che le consentono di svolgere il ruolo di carrier per molteplici tipologie di sostanze. La fragilità e la di

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Jadhav, Abhijit V. "Crosslinking of polyaniline with aryl azides and the photolysis of vinyl azides and azidopropanones." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1204666531.

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Mazzon, Elena. "Développement, étude physico-chimique et optimisation de mousses polymères biosourcées." Electronic Thesis or Diss., Montpellier, 2016. http://www.theses.fr/2016MONTT197.

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Ce travail de thèse porte sur le développement d’une nouvelle génération de mousses polymères biosourcées capables de satisfaire la fonction d’âme alvéolaire et structurale de pièces automobiles. Les formulations époxy choisies comme base polymère reposent sur deux différents prépolymères époxy, l’huile de lin époxydée (ELO) et le glycérol époxydé (GE). Ces derniers, associés en proportions variables, sont réticulés avec deux différents durcisseurs : l’isophorone diamine (IPDA) ou l’anhydride méthyl tétrahydrophtalique (MTHPA). Les formulations ternaires « ELO – GE – durcisseur » ont été carac

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36

Breyer, Sacha. "Etude du procédé de co-pyrolyse de déchets plastiques et d’huiles de lubrification usagées dans le but de produire un combustible liquide alternatif." Doctoral thesis, Universite Libre de Bruxelles, 2016. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/238688.

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Cette étude s’inscrit dans le cadre du projet MINERVE de la région wallonne quivise notamment à valoriser les anciens centres d’enfouissement technique et leur contenuau travers de la production de matières premières et de sources d’énergie. Plus particulièrement,l’objectif de ce travail est d’étudier un procédé de co-pyrolyse de déchetsplastiques et d’huiles de lubrification usagées, ayant pour finalité la production d’uncombustible alternatif liquide pour l’industrie, en vue d’une future montée en échelledu procédé.Pour ce faire, différentes approches ont été poursuivies. Premièrement, nous

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37

Chavan, Vijay S. "Controlled Synthesis and Characterization of Branched, Functionalized, and Cyclic Polymers." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1304550167.

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38

Modi, Sunny J. "Assessing the Feasibility of Poly-(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and Poly-(lactic acid) for Potential Food Packaging Applications." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1268921056.

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39

Benhadia, Abrehem M. A. "Evaluation of the critical parameters and polymeric coat performance in compressed multiparticulate systems." Thesis, University of Bradford, 2019. http://hdl.handle.net/10454/17459.

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Compression of coated pellets is a practical alternative to capsule filling. The current practice is to add cushioning agents to minimize the stress on the coated pellets. Cushioning agents however add bulkiness and reduce the overall drug loading capacity. In this study, we investigated the performance of compressed coated pellets with no cushioning agent to evaluate the feasibility of predicting the coat behaviour using thermo-mechanical and rheological analysis techniques. Different coating formulations were made of ethyl cellulose (EC) as a coating polymer and two different kinds of

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Devadas, Suchitha. "Fabrication of Lignin-Based Nanofibers: Influence of Lignin Type, Blend Ratios, and Total Polymer Concentration." University of Dayton / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=dayton160831003121355.

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41

Bryson, Latoya G. "Monomer recovery from nylon carpets via reactive extrusion." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22618.

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Thesis (Ph. D.)--Chemical and Biomolecular Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Muzzy, John D.; Committee Member: Cook, Fred L.; Committee Member: Jones, Christopher W.; Committee Member: Mayor, J. Rhett; Committee Member: Realff, Matthew J.; Committee Member: Schork, F. Joseph.

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Casadei, Riccardo. "Membrane composite a base di Lupamin 9095, grafene e grafene ossido per applicazioni carbon capture: purificazione del materiale, sintesi e caratterizzazione delle membrane." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14386/.

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Il progetto di questa tesi sperimentale riguarda la preparazione di membrane polimeriche composite per separazione di gas, nello specifico per applicazioni di carbon capture, ovvero il sequestro di anidride carbonica. Come matrice è stato utilizzato un polimero a base di polivinilammina in quanto riesce a esplicare il così detto "trasporto facilitato" della CO2; come rinforzanti sono stati utilizzati grafene e grafene ossido, per via delle loro eccezionali caratteristiche di rigidità e resistenza meccanica. Il lavoro di tesi sperimentale si è articolato attorno 3 attività principali: 1) purif

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Gherase, Dragos. "TADDOLs and derivatives : synthesis and applications in enantioselective processes." Electronic Thesis or Diss., Aix-Marseille 3, 2011. http://www.theses.fr/2011AIX30040.

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Dans cette thèse les résultats dans le domaine de la synthèse des dérivée des TADDOL et leur capacité d’induction chirale sont présentés. Une librairie des TADDOLs a été synthétisée et une analyse conformationnelle par VCD a été faite. Ces composés enantiopurs ont été testés dans la réaction de cyanosilylation enantioselective en donnant des résultats moyens. En partant de TADDOL nous avons synthétisé des dérivée phosphorés, des amines et des (thio)urées. Les dérivés de P(III) ont été utilisés comme ligands pour le palladium dans l’alkylation allylique asymétrique et les amines dans le réarran

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Signorini, Virginia. "Hybrid polymer-based membranes with graphene oxide nanoparticles for carbon dioxide capture." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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The project focuses on the development of hybrid polymer/inorganic membranes with aligned nanoparticles within the polymeric matrix for CO2 separation membrane fabrication. The investigated polymer is the PEG3A, while the inorganic particles are the Graphene Oxide (GO). The addition of the GO nanoparticles is done due to a UV-light cross-linking reaction between the polymer, the polymer solvent and the solvent in which nanoparticles are dispersed in different concentration. The solvents used for the incorporation of GO into the membrane matrix are Water, Ethanol and Acetone since these filler

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Juárez, Varón David. "Procesado, modelización y caracterización de mezclas industriales de SEBS con materiales con cambio de fase (PCM) para la mejora del confort térmico en aplicaciones de ortopedia y puericultura." Doctoral thesis, Editorial Universitat Politècnica de València, 2011. http://hdl.handle.net/10251/11551.

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El sector de puericultura y ortopédico son sectores de gran relevancia, donde aspectos como el confort, adaptabilidad, calidez, etc. adquieren sentido. Los cauchos basados en silicona líquida (LSR) son clave en estos sectores, ofreciendo interesantes propiedades tanto a nivel técnico como de percepción positiva por parte del usuario. No obstante, la transformación de estos materiales es algo más compleja que el conjunto de plásticos de uso común y además, debido a su naturaleza reticular, resulta un material difícil de reciclar. El proceso de inyección es un proceso de conformado de los mate

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Watson, Venroy George. "Decoration of Graphene Oxide with Silver Nanoparticles and Controlling the Silver Nanoparticle Loading on Graphene Oxide." University of Dayton / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1396879714.

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Damadzadeh, Behzad, and Hamideh Jabari. "Biodegradable Composites : Processing of thermoplastic polymers for medical applications." Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-19329.

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Despite the recent development in PLA and PLGA based medical devices, there are still needs to further improve the mechanical performance of bioresorbable medical implants and their bioactivity. This is normally done by optimizing the filler compositions in selected groups ofbiodegradable polymer matrices. In this study, the effects of various filler levels on mechanical strength and thermal properties of PLA and PLGA composites were investigated. Composites containing different dosage of osteoconductive HAp with various particles size (0-5μm, 0-50 μm, nano size), β-TCP, bioactive glass and bi

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Krishnamoorthi, Ramesh, and Zhang Shinzhao. "Recycling of Glass Fiber Composites." Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-16494.

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Composites are the materials which can be used for a wide variety of applications andproducts such as sports equipment, aerospace and marine because of light and stiffnessproperties. Composites are often made from thermoset resin with glass fibers.In this study, two ways of recycling composites were evaluated, which are microwavepyrolysed composites (MGC) and mechanical composites (GC). These glass fibers weregoing to be compounded with Polypropylene (PP) or Maleic Anhydride ModifiedPolypropylene (MAPP) and then injection moulded the sample by Micro-compounder.In order to get better adhesion t

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Do, Tuyet-Trinh. "Thermal degradation of polyvinyl chloride blends / by Tuyet-Trinh Do." Thesis, Queensland University of Technology, 2000.

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Schmidt, Marek Wojciech, and Marek Schmidt@rl ac uk. "Phase formation and structural transformation of strontium ferrite SrFeOx." The Australian National University. Research School of Physical Sciences and Engineering, 2001. http://thesis.anu.edu.au./public/adt-ANU20020708.190055.

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Non-stoichiometric strontium iron oxide is described by an abbreviated formula SrFeOx (2.5 ≤ x ≤ 3.0) exhibits a variety of interesting physical and chemical properties over a broad range of temperatures and in different gaseous environments. The oxide contains a mixture of iron in the trivalent and the rare tetravalent state. The material at elevated temperature is a mixed oxygen conductor and it, or its derivatives,can have practical applications in oxygen conducting devices such as pressure driven oxygen generators, partial oxidation reactors in electrodes for solid oxide fuel cells (SOFC).

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