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Dissertations / Theses on the topic 'Urethane A'

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Published: 4 June 2021

Last updated: 10 February 2022

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1

Xiong, Cher. "A study of two-component clear casting urethanes, urethane catalysts, and related processes." Online version, 1998. http://www.uwstout.edu/lib/thesis/1998/1998xiongc.pdf.

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2

Clayton, Anthony Brian. "Photopolymerised urethane acrylates /." Title page, contents and summary only, 1992. http://web4.library.adelaide.edu.au/theses/09PH/09phc622.pdf.

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3

Alshuiref, Abubaker. "Synthesis and characterization of two novel urethane macromonomers and their methacrylic/urethane graft copolymers." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4022.

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Thesis (PhD (Chemistry and Polymer Science))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Polymethacrylates are well known adhesives and can carry specific functionality, but have the disadvantage that their flexible backbones impart limited thermal stability and mechanical strength. Polyurethanes (PUs) are finding increasing application and use in many industries due to their advantageous properties, such as a wide range of flexibility combined with toughness, high chemical resistance and excellent weatherability. PUs do however have some disadvantages, for instance, PU is co

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4

Cobaj, Anisa. "The Effects of Urethane Methacrylates on the Film Properties of Acrylic-Urethane Hybrid Latexes." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1560335362557041.

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5

Kitson, Sean Leslie. "The mechanism of carcinogenesis by urethane." Thesis, University of Newcastle Upon Tyne, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242359.

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6

Zhang, Xiangcheng. "Fracture of modified urethane-methacrylate resins." Thesis, Cranfield University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358297.

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7

Van, Clack Ralph Vincent. "Non-isocyanate routes to urethane-polymers." Thesis, University of Central Lancashire, 2007. http://clok.uclan.ac.uk/20700/.

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The conventional synthetic route to urethane polymers involves the use of hazardous dflsocyanates which are synthesised using phosgene, the use of which produces a significant chlorine-waste stream. The processing of high molecular mass specialty polyurethanes regularly requires the use of organic solvents. This research aims to address these issues by separately employing enzyme-catalysis in order to synthesise high molecular mass polyurethanes and by investigating the use of high pressure CO2 as an alternative to the use of organic solvents in the synthesis of urethane polymers. The main bui

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8

Degrandi, Elise. "LATEX HYBRIDES URETHANE/ACRYLIQUE POUR APPLICATIONS ADHESIVES." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2009. http://tel.archives-ouvertes.fr/tel-00465348.

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Cette thèse a pour objet l'étude de films adhésifs obtenus par le séchage de particules de latex hybrides uréthane/acrylique. Ces latex ont été préparés par polymérisation en miniémulsion pour assurer une incorporation homogène du polyuréthane dans chaque particule. L'étude de la morphologie des particules et des films a montré que le greffage du polyuréthane sur le réseau acrylique est essentiel pour éviter une séparation de phase à l'échelle du film, néfaste pour les propriétés macroscopiques. Les propriétés mécaniques de ces films hybrides sont contrôlés par deux paramètres indépendants : L

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9

Wu, Yong Kang. "Biostability/biodegradation of poly(ether urethane)s." Case Western Reserve University School of Graduate Studies / OhioLINK, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=case1061314415.

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10

Todd, Jordana Louise. "UV-initiated synthesis of novel urethane polymers." Thesis, University of Central Lancashire, 2007. http://clok.uclan.ac.uk/20200/.

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The Barton reaction involves the photoinitiated rearrangement of nitrite esters and is used primarily in the synthesis of complex steroidal structures. The rearrangement results in the introduction of active hydrogen atoms into the molecule and a novel use of this reaction for the production of polyurethane coatings through a photopolymerisation reaction with isocyanates has been discovered. The nitrite esters were synthesised from nitrous acid produced in situ from sodium nitrite and sulfuric or nitric acid. Yields of 79.5 and 76.4% were obtained in the synthesis of the mononitrite esters but

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11

Hunt, Jason Patrick. "Synthesis and dynamic mechanical studies of a urethane-based polyrotaxane." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/8553.

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12

Alshuiref, Abubaker. "Synthesis and characterization of urethane-acrylate graft copolymers." Thesis, Link to the online version, 2006. http://hdl.handle.net/10019/491.

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13

Christenson, Elizabeth. "Biostability and Biocompatibility of Modified Polyurethane Elastomers." Case Western Reserve University School of Graduate Studies / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=case1118268387.

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14

Abd, Elrehim Mona Hassan Mohammed. "Synthesis and characterization of hyperbranched poly(urea-urethane)s." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2004. http://nbn-resolving.de/urn:nbn:de:swb:14-1091096011203-44194.

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The thesis aims to synthesize hyperbranched poly(urea-urethane) polymers (HPU) in one-pot method using commercially available monomers which are 2,4-toluylene diisocyanate (TDI) as aromatic diisocyanate and isophorone diisocyanate (IPDI) and 2(3-isocyanatopropyl) cyclohexylisocyanate (IPCI) as aliphatic diisocyanates. Those proposed diisocyanates were reacted with diethanolamine (DEA) or diisopropanolamine (DIPA). Conditions of polymerisation reactions were optimised. Complete structural analysis using 1H and 13C NMR for the obtained aromatic polymers was carried out. Degree of branching up to

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15

Kiziltay, Aysel. "Biodegradable Poly(ester-urethane) Scaffolds For Bone Tissue Engineering." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613811/index.pdf.

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During last decade, polyurethanes (PUs) which are able to degrade into harmless molecules upon implantation have received a significant level of attention as a biomaterial in tissue engineering applications. Many studies are focused especially on development of PUs based on amino acid derivatives<br>however, there are only few applications of amino acid based PUs in tissue engineering. In this study, a biocompatible and biodegradable thermoplastic poly(ester-urethane) (PEU) based on L-lysine diisocyanate (LDI) and polycaprolactone diol (PCL) was synthesized and used for the preparation of two

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16

Preston, Christopher M. L. "Poly(dimethylsiloxane) : blends with poly(urethane) & radiation chemistry /." [St. Lucia, Qld.], 2000. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16169.pdf.

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17

Hsu, Tze-Chien Jeffrey. "Urethane-based IPNs and polyureas in reactive polymer processing /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487331541711679.

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18

Lau, Soo-Khim. "The structure-property relationships of urethane-acrylic thermosetting systems." Thesis, Loughborough University, 1995. https://dspace.lboro.ac.uk/2134/27415.

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Urethane-acrylic copolymers have found increasing use as a radiation curable materials in the recent years. These copolymers are highly crosslinked through the use of acrylic monomers having more than one double bond. Stirling Lloyd had discovered such materials to be a successful alternative to the urethane or acrylics coatings as waterproof membrane coatings. In this project, structure-property relationships of UA copolymer systems were studied. These were peroxide cured at room temperature.

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19

Wintersgill, S. "Reactions of group IV metal compounds with isocyanates, and their catalytic applications." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311171.

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20

Gibb, Jack Nicholas. "The competing reactions of polyurethane foam formation : a computational and experimental study." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648568.

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21

Fallon, Jake Jeffrey. "Structure-Process-Property Relationships of Cellulose Nanocrystal Thermoplastic Urethane Composites." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/103053.

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Nanomaterials are becoming increasingly prevalent in final use products as we continue to improve our understanding of their structure and properties and optimize their processing. The useful applications for these materials extend from new drug delivery systems to improved materials for various transport industries and many more. Nanoscale materials which are commonly used include but are not limited to carbon nanotubes, graphene, silica, nanoclays, and cellulose nanocrystals. The literature presented herein aims to investigate structure-process-property relationships of cellulose nanocrystal

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22

Bakhshi, R. "Coating stent materials with polyhedral oligomeric silsesquioxane-poly(carbonateurea)urethane nanocomposites." Thesis, University College London (University of London), 2009. http://discovery.ucl.ac.uk/18987/.

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The long-term efficacy of coronary or peripheral stenting is limited by in-stent restenosis (ISR), which occurs in 15 to 30% of patients and is attributed primarily to neointimal hyperplasia. By adding a drug-eluting coating, this rate has been reduced to about 5% or less. However, recently longer-term follow-up data has highlighted problems with drug-coated stents, including late stage thrombosis. A bio-stable poly(carbonate-urea)urethane has been used for stent coating and the surface properties of the polymer have been optimised by incorporating the polyhedral oligomeric silsesquioxane mole

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23

Hullard, Stephen Mark. "Studies towards siloxane-urethane elastomers for upper extremity prosthesis cosmetic gloves." Thesis, Cardiff University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316357.

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24

Anderson, Gabriel Donn. "Long-term Durability Characterization and Prediction of a Urethane-based Adhesive." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/98825.

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Polymeric adhesives play an increasingly critical role in today's engineering designs. When used, adhesively bonded components reduce or eliminate the need for bolted or welded connections. In many cases, this can reduce stress concentrations and weight. With energy dissipating adhesives, noise and vibration reduction are possible, as is the use of unique or complicated designs that could not otherwise be constructed. Adhesive properties however, can vary greatly with time, temperature, and environmental exposure conditions such as moisture. It is therefore critical, to understand the behavior

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25

Klepáč, Patrik. "Výroba mělkého výtažku pryží." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228146.

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An object of this master thesis is the proposal of variants solving a manufacturing of required part and the selection right technology for single part production of required part from stainless steel 17240 (DIN 1.4301). At the first part of this thesis is briefly reviewed conventional forming and at rest of this thesis is closely reviewed the technology using the elastic tools (rubber, urethane), hydroforming technology and design of proper tool for required part. At the end of this work will be release economics estimation of fine technology and designed tool.

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26

Bass, Roger Wesley. "Synthesis and Characterization of Self-Healing Poly (Carbonate Urethane) Carbon-Nanotube Composites." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/2999.

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Synthesis of high molar mass polycarbonate polyurethanes using a novel polyol is described. The resulting elastomers demonstrate excellent mechanical properties as well as the capability to re-heal after rupture without the addition of additives or imbedded healing agents. The self-healing functionality is shown to greatly improve with the addition of up to 1% single and multi-walled carbon nanotubes. The interface of the carbon nanotubes and self-healing polymer are probed using Raman techniques and provide an insight into how the self-healing actions are improved with the addition of carb

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27

Tipton, Allison Breanne. "An investigation into the imaging properties of semi-rigid urethane casting resin." Thesis, University of Iowa, 2011. https://ir.uiowa.edu/etd/1271.

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Imagemaking is a universal impulse experienced by all human cultures. In the continual pursuit to create compelling and engaging forms, efforts to permit images to interact in dynamic ways in extended space have been the subject of considerable exploration. The often sought-after goal is to break the surface of the paper without sacrificing the essence of the image. My current research is the investigation of Smooth-On 300 series Semi-Rigid Urethane Casting Resin and its interaction with various laser jet inks on diverse paper or paper analogous mediums. Purely on accident, it was discovered t

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28

Meng, Lei. "Investigation of non-isocyanate urethane functional latexes and carbon nanofiller/epoxy coatings." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1445733724.

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29

QUINI, JOSUE G. "Adesivos estruturais uretânicos aplicados a combinações de compósitos plásticos e metais." reponame:Repositório Institucional do IPEN, 2011. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9995.

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Made available in DSpace on 2014-10-09T12:33:38Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:04:04Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP

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30

Barnes, Dunstan Henry. "Calcium phosphate coatings on polycarbonate urethane substrates for artificial spinal disc replacement devices." Thesis, University of Cambridge, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608917.

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31

O'Sickey, Matthew J. "Characterization of Structure-Property Relationships of Poly(urethane-urea)s for Fiber Applications." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/26792.

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Poly(urethane)s and poly(urethane-urea)s (PUU) are nearly ubiquitous, having been in existence since before the Second World War. Spandex, a poly(urethane-urea) elastomeric fiber, is found in nearly all articles of apparel as well as in an increasing array of other consumer items. The technology and chemistry of spandex is largely unchanged since its inception in the late 1950s, with the majority of spandex employing poly(tetramethylene ether glycol) as soft segments. Recent developments in catalyst technology have resulted in the production of ultra-low monol content poly(propylene glycol) (P

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32

Asplund, Basse. "Biodegradable Thermoplastic Elastomers." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis Acta Universitatis Upsaliensis, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7434.

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33

Nebipasagil, Ali. "Chemically and Photochemically Crosslinked Networks and Acid-Functionalized Mwcnt Composites." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/42703.

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PTMO-urethane and urea diacrylates (UtDA, UrDA) were synthesized from a two-step reactions of bis (4-isocyanatocyclohexyl) methane (HMDI) with either Î±,Ï -hydroxy-terminated poly (tetramethylene oxide) (PTMO Mn 250, 1000, 2000 and 2900 g/mol) or Î±,Ï -aminopropyl-terminated PTMO and 2-hydroxyethyl acrylate (HEA). PTMO-based ester precursors (EtDA) were also synthesized from Î±,Ï -hydroxy-terminated PTMO (Mn 1000 and 2000 g/mol). Two bis acetoacetates were synthesized from acetoacetylation of 1,4-butanediol and 250 g/mol hydroxy-terminated PTMO with tert-butyl acetoacetate. 1H NMR spectroscopy

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34

Cornish, Martyn Christopher. "Role of chemical architecture on the physical properties of model poly(urethane-urea) elastomers." Thesis, University of Manchester, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.705546.

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35

BOHN, VERONIQUE. "Contribution a l'etude du carbamate d'ethyle (urethane) dans les eaux de vie de fruits." Strasbourg 1, 1987. http://www.theses.fr/1987STR10771.

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36

Nishioka, Marcia G. "Identification of Carcinogenic Di-amines in the Indoor Environment from Common Urethane Polymer Products." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu148344608670484.

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37

Borth, David J. "Non-Destructive Evaluation of Urethane-Ester Coating Systems Using the Scanning Kelvin Probe Technique." University of Dayton / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1524749968517527.

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38

Sasubilli, Ramakrishna Gutheil William G. "Solid-phase synthesis of peptides and peptide mimetics using urethane and backbone amide linker strategies." Diss., UMK access, 2006.

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Thesis (M.S.)--School of Pharmacy. University of Missouri--Kansas City, 2006.<br>"A thesis in pharmaceutical sciences." Typescript. Advisor: William G. Gutheil. Vita. Title from "catalog record" of the print edition Description based on contents viewed Nov. 9, 2007. Includes bibliographical references (leaves 63-73). Online version of the print edition.

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39

Carpenter, Phillip P. "Examination of the surface and interfacial properties of an epoxide-urethane resin for surface coatings." Thesis, Loughborough University, 1997. https://dspace.lboro.ac.uk/2134/32637.

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Electrodepositable paints are used in the auto industry to provide the majority of the protection against corrosion to mild steel car body shells. They are generally epoxy/blocked isocyanate resins systems which are applied by action of an electropotential between the car and an anode. Upon heating to 175°C the blocked isocyanate deblocks, and crosslinking occurs predominantly via the formation of urethane and urea linkages. The aim of the project was to gain a better understanding of the factors which may affect the adhesion of the electrocoat resin polymer to a steel surface, to investigate

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40

Iurzhenko, Maksym. "Electrical, thermomechanical and sorption properties of hybrid organic-inorganic systems based on urethane oligomers and silicates." Phd thesis, Université Claude Bernard - Lyon I, 2009. http://tel.archives-ouvertes.fr/tel-00689865.

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L'objectif de cette recherche est d'établir des mécanismes de formation de la structure des systèmes hybrides organique-inorganique à base des oligomères uréthane et silicates en fonction de la réactivité de la composant organique, d'identifier l'impact de l'organisation structurelle du OIS obtenue sur leurs propriétés électriques et thermomécaniques, de sorption et de l'activité du capteur. La signification pratique des résultats est la détermination de l'impact de la réactivité composant organique sur la structure des systèmes hybrides polymère organique-inorganique avec la possibilité d'obt

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Li, Mei. "Preparation of urethane-acrylic hybrid miniemulsion nanoparticles /." Diss., 2002. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3048964.

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42

Lin, Yo-Shao, and 林育劭. "Phase Transitions and Morphology Siloxane-Ether Urethane Copolymer." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/19563698741778077006.

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碩士<br>萬能科技大學<br>工程科技研究所<br>93<br>Siloxane-ether urethane (PDMS/PTMG-PUBD) and siloxane-ether-imide urethane (PDMS/PTMG-PUIM) copolymers prepared from a one step method in the N,N-Dimethyformamide(DMF)/tetrahydrofuran(THF) mixed solvent. The soft-segment of PDMS/PTMG-PU copolymers consist of polydimethylsiloxane (PDMS) and polytetramethylene glycol (PTMG) and hard-segment is urethane segment reacting from 1,4-butane diol(1,4-BD) and 4,4-diphenylmethane diisocyanate(MDI). The soft segment of PDMS/PTMG-PUIM was similar to PDMS/PTMG-PUBD but hard-segment is a imide segment consisting of 3,3', 4,4'

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Chiu, Hsien-Chang, and 邱憲章. "Thermal Degradation Characteristics of Siloxane-Ether Urethane Copolymer." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/36760374872465685986.

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碩士<br>萬能科技大學<br>工程科技研究所<br>94<br>Siloxane-ether urethane (PDMS/PTMG-PU) and siloxane-ether-imide urethane (PDMS/PTMG-PUIM) copolymers were synthesized in this study. The hard segments consisted of 4,4-diphenylmethane diisocyanate (MDI) and 1,4-butane diol (1,4-BD) or MDI and 3,3’,4,4’-diphenylsulfone tetracarboxylic dianhydride (DSDA). The soft segments were mixture of poly(tetramethylene glycol) (PTMG) and polydimethylsiloxane diol (PDMS). TGA measurement indicated that the degradations of copolymers were obviously distinguished into two stages. The degradation in the first stage was the deco

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Cheng, Wei-Yuan, and 鄭磑元. "Study of Aliphatic Urethane Acrylate UV-curing Coatings." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/b38ybp.

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碩士<br>國立臺北科技大學<br>有機高分子研究所<br>105<br>This purpose is discussed the physical properties of the radical light-cured coating performance on ABS materials. Use with different acrylic monomers and acrylic resin light curable coatings reach on the physical properties of ABS materials adhesion, hardness, abrasion more improved. Radical curing system having acrylic group 1,6-Hexanediol Diacrylate(HDDA)、Dipentaerythritol Hexaacrylate(DPHA), added photoinitiator (1-hydroxycyclohexyl phenyl ketone) and leveling agent(Polyether modified silicone), and is to 600mj/cm2 of UV light energy. Cross hatch test p

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Jang, Shin-Cheng, and 張欣程. "Synthesis and Physical Properties of Siloxane-Urethane Copolymer." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/22519219672495032590.

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博士<br>逢甲大學<br>紡織工程所<br>96<br>Siloxane-urethane copolymers and siloxane-urethane-imide copolymers were synthesized by one-step process. Siloxane-urethane copolymers prepared from polydimethylsiloxane diol (PDMS) with a molecular weight 1000 or 1800 which was used as a soft segment, 4,4''-diphenylmethane diisocyanate (MDI) and 1,4-butanediol (1,4-BD). Siloxane-urethane-imide copolymers prepared from PDMS with a molecular weight 1000 or 1800, MDI and pyromellitic dianhydride (PMDA). The hard segment of conventional polyurethane displayed one stage of degradation. Siloxane-urethane copolymers ex

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Tzeng, Shr-Gung, and 曾士恭. "Studies on UV-curable Poly(urethane acrylate) Resin." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/93735945589867174545.

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碩士<br>國立臺灣大學<br>化學工程學研究所<br>92<br>UV curable polyurethane acrylate resins based on polyoxypropylene glycol(PPG) soft segment with different molecular weights were synthesized in this study. The kinetics of UV curing under different UV exposure doses, at various photoinitiator concentration was investigated and the kinetic equation was derived. In addition, UV curable urethane-acrylate resins were considered as reactive acrylate monomers as reactive diluents: Tripropylene Glycol Diacrylate(TPGDA) and Acrylic acid(AA). Further more, physical properties of this type of UV curable material, the ef

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Lin, Shih Jyun, and 林士君. "Synthesis and Characterizations of New Poly(urethane-amine)Dendrimer." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/60691526534778373735.

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碩士<br>嘉南藥理科技大學<br>生物科技系<br>101<br>The aim of this study is preparation of polyurethane dendrimers (PUAD-EIA, PUAD-OH,PUAD-NH2) by divergent method.The chemical structure of the dendrimer was indentified by fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance spectroscopy (NMR).To evaluate their physical and chemical properties, we executed a series of experiments. The particles size was characterized by transmission electron microscopy (TEM). Zeta-potential analyzer was also performed to understand surface properties of polymer. Acid-base titration studies was perform

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Chen, Yen-Jung, and 陳妍蓉. "Novel Urethane-acrylate Root Canal Sealer:Cytotoxicity and Antibacterial Effect." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/20050485394139068873.

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碩士<br>國立臺灣大學<br>臨床牙醫學研究所<br>99<br>For sealing off of the root canal system after completely cleaning and shaping, the standard root canal filling is a combination of sealers with gutta-percha cone. The ideal root canal sealer needs good biocompatibility and antibacterial effect. Our research team has developed dual-cured urethane-acrylate (UA) sealer. Theses materials have good handling characteristics and bonding strength. For further research about the safety of urethane-acrylate sealer. The purposes of this study were to investigate the cytotoxicity and antibacterial effect of UA sealer. Th

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WANG, HSING-LUNG, and 王興龍. "Study on Polyether Poly(urethane-urea) as Polymer Electrolyte." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/95147117805778380880.

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Abstract:

碩士<br>國立成功大學<br>化學工程學系<br>88<br>The behaviors of lithium ions in a polyether poly(urethane urea) (PEUU) were investigated by Differential Scanning Calorimetry (DSC), Fourier Transform Infra-Red (FTIR) spectroscopy, AC Impedance and magic angle spinning (MAS) solid state NMR measurements. The PEUU, used in this study, is composed of polyethylene glycol (PEG, mol. wt. 1000) as the soft segment and 4,4’-methylene bis(cyclohexyl isocyanate) extened with ethylene diamine (EDA) as hard segment. DSC experiments indicate the formation of transient cross links between Li+ ions and the ether oxygens on

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Lin, Mai-Jane, and 林美珍. "Mechanistic Studies of Rhenium Complexes Catalyzed Urethane Formation Reaction." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/00601543321349084470.

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