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Dissertations / Theses on the topic 'Ethylene copolymer'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Glikman, Jean-François. "Oxydation photo-thermique des copolymeres ethylene-acetate de vinyle, ethylene-acrylate d'ethyle, ethylene-acide acrylique." Clermont-Ferrand 2, 1987. http://www.theses.fr/1987CLF21050.

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Irradiation sous vide et dans l'air. La vitesse d'apparition des produits de photooxydation depend du type de copolymere. Cinetique et mecanisme. Mise en evidence de la labilite croissante de l'atome d'hydrogene tertiaire situe en position alpha des groupes substituants quand on passe de l'acetate a l'ethylate et a l'acide. Influence de charges et de stabilisants

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2

Clough, Norman E. "Thermodynamics of ethylene-vinyl acetate copolymer blends." Thesis, Durham University, 1994. http://etheses.dur.ac.uk/5489/.

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The purpose of this study was to characterise the miscibility of several poly(ethylene-co-vinyl acetate), EVA, based polymer blends. EVA has many industrial applications and is often present as one of several polymeric components. Consequently, there is considerable interest in the thermodynamics of these blend systems. The thermodynamics of these blends was studied using several techniques: differential scanning calorimetry; phase contrast optical microscopy; small angle neutron scattering and wide angle X-ray scattering. Characterisation was also to include assessing the relative enthalpic a

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3

Qureshi, M. S. "A study of styrene-ethylene oxide diblock copolymers." Thesis, University of Strathclyde, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292269.

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4

Bellahdeb, Fatima. "Compatibilisation of poly(ethylene terephthalate) and polyolefins with mixtures of phenoxy and acid functionalised ethylene copolymer." Thesis, Loughborough University, 1993. https://dspace.lboro.ac.uk/2134/12009.

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Polyethylene terephthalate (PET) and polyolefins, such as high density polyethylene (HDPE), are important commodity polymers. PET is widely used for fibres and fllms but is also an attractive material for moulded products, owing to its high melting point and solvent resistance. Crystalline PET, however, is brittle and susceptible to hydrolytic degradation through water absorption. Polyolefins, on the other hand, are tough materials with low water absorption but have a relatively low melting point. Blending these two materials is expected to produce an attractive combination of properties. Blen

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5

Okpe, Owoicho. "Alumina trihydrate as a fire retardant for ethylene vinyl acetate copolymer." Thesis, University of Manchester, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339740.

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6

Bazaz, Abdolrahim. "Synthesis and solution properties of hydrophobically associating heptadecanamide poly(ethylene glycol) copolymer." Thesis, University of Bristol, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295100.

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7

Fratini, Christopher M. "Study of the Morphology and Optical Properties of Propylene/Ethylene Copolymer Films." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/27211.

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The development of a new catalyst system by The Dow Chemical Company has resulted in the production of isotactic polypropylene and propylene/ethylene copolymers with a unique defect and comonomer distribution. This work investigated the morphology and optical properties of cast and compression molded films made from the homopolymer and copolymers with up to 20 mol% ethylene comonomer. The defect distribution of the Dow Chemical copolymers resulted in materials with lower crystallinity than Ziegler-Natta or metallocene-made materials of similar ethylene content. These materials exhibited a gamm

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8

Zhang, Qian. "Synthesis and Characterization of Novel Magnetite Nanoparticle Block Copolymer Complexes." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/27327.

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Superparamagnetic Magnetite (Fe3O4) nanoparticles were synthesized and complexed with carboxylate-functionalized block copolymers, and aqueous dispersions of the complexes were investigated as functions of their chemical and morphological structures. The block copolymer dispersants possessed either poly(ethylene oxide), poly(ethylene oxide-co-propylene oxide), or poly(ethylene oxide-b-propylene oxide) outer blocks, and all contained a polyurethane center block with pendant carboxylate functional groups. The complexes were formed through interactions of the carboxylates with the surfaces of t

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9

Burgess, Steven K. "Fundamentals of transport in poly(ethylene terephthalate) and poly(ethylene furanoate) barrier materials." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54887.

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The increasing use of polymeric materials in food packaging applications is due to many factors; however, most are related to cost. While poly(ethylene terephthalate) (PET) is currently the industry standard for soft-drink bottles, more stringent requirements on the barrier properties to oxygen are needed for PET to expand further into more demanding markets (i.e., juice, etc). The current work examines the fundamental oxygen and carbon dioxide permeation and sorption properties of amorphous, caffeine antiplasticized PET and amorphous poly(ethylene furanoate) (PEF), which is a new biologically

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10

Walling, Nadja. "Phase morphology and properties of injection moulded polypropylene-ethylene vinyl alcohol copolymer blends." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22840.

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The phase morphology of injection moulded blends of polypropylene (PP) and ethylene vinyl alcohol copolymer (EVOH) changes dramatically throughout the sample and especially across the sample thickness. In particular, the development of a laminar structure was evaluated by image analysis of scanning electron micrographs. The results indicate that a laminar morphology is most likely to develop in the shear zone, as maxima in particle size and aspect ratio are observed in directions parallel and transverse to flow in this region of the sample. This laminar structure is more pronounced at high con

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11

Lepoutre, Priscilla. "The microstructure of polypropylene blends with ethylene vinyl alcohol copolymer and maleated polypropylene /." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61816.

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12

Khunniteekool, Chonlada. "Structure/property relationships of cross-linked polyethylene and ethylene vinyl acetate copolymer foams." Thesis, University of Manchester, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390453.

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13

Briceno, Garcia Ruben Dario. "Crosslinking of ethylene copolymers from epoxy chemistry." Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0037.

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La plupart des couches d'isolation de câbles pour la moyenne tension "MV" et haute tension "HV" sont fabriquées en polyéthylène réticulé (XLPE) par voie peroxyde. L'impact des sous-produits de réaction sur les propriétés et la nécessité d'une étape de dégazage au cours du processus sont les principaux problèmes liés à cette technologie. Cette étude se concentre sur le développement d'une méthode de réticulation alternative sans les problèmes liés aux sous-produits. Des copolymères d’éthylène/époxy ont été réticulés thermiquement en utilisant un agent aminoacide pour créer des liaisons covalent

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14

Godbout, Chris. "Poly(ethylene glycol-co-lactic acid) block copolymer micelles : synthesis, physicochemical characterization, and degradation." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101129.

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The goal of this thesis was to synthesize two poly(lactic acid)-co-poly(ethylene glycol) biodegradable amphiphilic block copolymers that can self-assemble in an aqueous environment into a micellar morphology. Also, the physicochemical characteristics of both the copolymers and resultant micelles were studied using a variety of chemical characterization techniques to gain insight into the factors that are important in the formation and function of the micelles. Two copolymers were synthesized which had different sizes and relative block lengths. These copolymers were characterized using NMR spe

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15

Yang, Jinhai. "Phase Morphology and Orientation Development of Polymer Blends in Melt Processing." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1200460579.

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16

Allen, Christine Jane. "Polycaprolactone-♭-poly(ethylene oxide) copolymer micelles : physico-chemical characterization and application in drug delivery." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=35557.

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This thesis describes the preparation, characterization and biological study of block copolymer aggregates as drug delivery vehicles. A novel method is described for the synthesis of biodegradable and biocompatible copolymers of polycaprolactone-b-poly(ethylene oxide). The copolymers and their aggregates are then characterized with special attention given to properties which are of most interest to applications in drug delivery such as copolymer composition, thermal behavior, critical water content, critical micelle concentration, partition coefficient of hydrophobic solubilizates, morphology

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17

Hozhabr, Sassan. "Enhancement of interfacial adhesion in polymer blends of polypropylene and poly (ethylene vinyl alcohol copolymer)." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60598.

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In the present study a blend system containing polypropylene (PP) and ethylene vinyl alcohol copolymer (EVOH) was considered. Maleic anhydride grafted polypropylene (MAH-g-PP) was used to improve adhesion at the interface. The preliminary work was conducted in a batch mixer and then extended to a single and a twin screw extruders.<br>The results in the batch mixer demonstrated that blends containing high levels of MAH have well bonded morphology and impact strengths comparable to pure materials. Statistical analysis of the results showed that at processing temperature of 200$ sp circ$C and mix

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18

Ranganathan, Sumita Sanjeevi. "Grafting of maleic anhydride onto model esters and ethylene methyl acrylate copolymer, kinetics and structure." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ31952.pdf.

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19

Allen, Christine Jane. "Polycaprolactone-b-poly(ethylene oxide) copolymer micelles, physico-chemical characterization and application in drug delivery." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0029/NQ64495.pdf.

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20

Hoza, Adam. "Effect of Ethylene and Propylene on Performance of Ziegler - Natta Catalyst in Stopped - Flow Polymerization." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-320775.

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Výzkum v této práci byl zaměřen na přípravu a charakterizaci blokových kopolymerů typu polypropylen-blok-poly(propylenu-co-ethylenu) (dále jen PP-blok-EPR). Tyto materiály jsou považovány za účinné kompatibilizátory mezi semi-krystalickou polypropylenovou (PP) matricí a amorfními doménami statistického kopolymeru propylenu a etylenu (EPR) v rázuvzdorném sekvenčním kopolymeru (ICP) a proto byl výzkum zaměřen na zkoumání vlivu přídavku blokového kopolymeru PP-blok-EPR na vlastnosti komerčního ICP. Blokové kopolymery byly připraveny za použití techniky „stopped-flow“. Pro tento účel byla zkonstru

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21

Mouflou, Zoubida. "Reseaux polymeres hydrophiles : synthese et application en chromatographie d'exclusion sterique en milieu aqueux." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13150.

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Polymeres tridimensionnels non ioniques presentant une bonne tenue mecanique constitues par un squelette hydrophobe rigide reticule, dotes de greffons hydrophiles polyoxiranne. Broyage des gels et tamisage des grains

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22

Schofield, Wayne Christopher Edward. "Factors affecting the performance of magnesium hydroxide flame retardant fillers in an ethylene vinyl acetate copolymer." Thesis, Manchester Metropolitan University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297579.

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23

Bernard, Sophie. "Blends of a polystyrene-block-poly(ethylene oxide) copolymer and its corresponding homopolymers at the air-water interface." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0012780.

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24

Muriel, Galet Virginia. "Novel antimicrobial films based on ethylene-vinyl alcohol copolymers for food packaging application." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/48522.

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This PhD dissertation thesis has been focus on the development and characterization of antimicrobial packaging films based on the incorporation in the polymer matrix or on the attachment to the film surface of naturally occurring antimicrobial compounds with the purpose of inhibiting the proliferation of microorganisms and extend the microbiological shelf life of packaged food products. The studied active films are based on the use of ethylene vinyl copolymers (EVOH) containing 29% (EVOH29) or 44% (EVOH44) molar percentage of ethylene as polymeric vehicle for the incorporation of severa

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25

Bhargava, Prachur. "SELF-ASSEMBLED POLYSTYRENE-BLOCK-POLY (ETHYLENE OXIDE) (PS-b-PEO) MICELLE MORPHOLOGIES IN SOLUTION." University of Akron / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=akron1171733030.

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26

Rodriguez-Vazquez, Miguel. "Thermal and photo degradation and stabilisation of an ethylene vinyl acetate copolymer in the presence of air." Thesis, Manchester Metropolitan University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289615.

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27

Feng, Jiawei. "Compatibility and Shape Memory Effect Study of Maleated Ethylene Propylene Copolymer(MAn-g-EPM)/Fatty Acid Blends." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1500514544100023.

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28

Katakura, Hiromichi. "Improvement of retroviral vectors by coating with poly(ethylene glycol)-poly (L-lysine) block copolymer (PEG-PLL)." Kyoto University, 2004. http://hdl.handle.net/2433/147520.

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29

Sapkota, Dol Raj. "Single molecule tracking studies of solvent-swollen microdomains in cylinder-forming polystyrene-Poly (ethylene oxide) diblock copolymer films." Thesis, Kansas State University, 2016. http://hdl.handle.net/2097/35763.

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Master of Science<br>Department of Chemistry<br>Takashi Ito<br>Solvent swelling of block copolymer microdomains plays an essential role in the improvement of microdomain alignment by solvent vapor annealing and in chemical separations using block copolymer monoliths. Here, investigation of the effects of solvent swelling on the molecular permeability and dimensions of cylindrical microdomains in polystyrene-block-poly(ethylene oxide) (PS-b-PEO) films is done by using single molecule tracking. These films are prepared by sandwiching benzene (with/without methanol) or THF (with/without methanol)

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30

Chen, Alfred Yuen-Wei. "Synthesis and Functionalization of Poly(ethylene oxide-b-ethyloxazoline) Diblock Copolymers with Phosphonate Ions." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/23930.

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Poly(ethylene oxide) (PEO) and poly(2-ethyl-2-oxazoline) (PEOX) are biocompatible polymers that act as hydrophilic "stealth" drug carriers. As block copolymers, the PEOX group offers a wider variety of functionalization. The goal of this project was to synthesize a poly(ethylene oxide)-b-poly(2-ethyl-2-oxazoline) (PEO-b-PEOX) block copolymer and functionalize pendent groups of PEOX with phosphonic acid. This was achieved through cationic ring opening polymerization (CROP) of 2-ethyl-2-oxazoline monomer onto PEO. These polymerizations used tosylsulfonyl chloride as initiator. Size-exclusion chr

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31

Huang, Zhenyu. "Crystallization and Melting Behavior of Linear Polyethylene and Ethylene/Styrene Copolymers and Chain Length Dependence of Spherulitic Growth Rate for Poly(Ethylene Oxide) Fractions." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/29211.

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The crystallization and melting behavior of linear polyethylene and of a series of random ethylene/styrene copolymers was investigated using a combination of classical and temperature modulated differential scanning calorimetry. In the case of linear polyethylene and low styrene content copolymers, the temporal evolutions of the melting temperature, degree of crystallinity, and excess heat capacity were studied during crystallization. The following correlations were established: 1) the evolution of the melting temperature with time parallels that of the degree of crystallinity, 2) the excess h

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32

Serpe, Gaétan. "Morphologie et permeabilite des melanges polyethylene-polyamide." Paris 6, 1988. http://www.theses.fr/1988PA066536.

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Etude des proprietes hydrodynamiques du melange (vitesse de cisaillement, temperature, tension interfaciale, viscosite) et de la technique de mise en forme utilisee en relation avec la taille moyenne de la dispersion. Analyse de la morphologie montrant que la taille moyenne de la phase dispersee resulterait d'un equilibre entre un effet de fragmentation et un effet de coalescence des nodules. Formation d'un copolymere greffe par addition au melange d'un copolymere ethylene-anhydride maleique

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33

Letchford, Kevin John. "Development of methoxy poly(ethylene glycol)-block-poly(caprolactone) amphiphilic diblock copolymer nanoparticulate formulations for the delivery of paclitaxel." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2487.

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The goal of this project was to develop a non-toxic amphiphilic diblock copolymer nanoparticulate drug delivery system that will solubilize paclitaxel (PTX) and retain the drug in plasma. Methoxy poly(ethylene glycol)-block-poly(ε-caprolactone) (MePEG-b-PCL) diblock copolymers loaded with PTX were characterized and their physicochemical properties were correlated with their performance as nanoparticulate drug delivery systems. A series of MePEG-b-PCL was synthesized with PCL blocks ranging from 2-104 repeat units and MePEG blocks of 17, 44 or 114 repeat units. All copolymers were water soluble

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34

Shan, Haifeng. "Structure development in melt spinning, cold drawing and cold compression of poly(ethylene-co-octene) with different octene content." Akron, OH : University of Akron, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1137341440.

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Dissertation (Ph. D.)--University of Akron, Dept. of Polymer Engineering, 2006.<br>"May, 2006." Title from electronic dissertation title page (viewed 10/11/2006) Advisor, James L. White; Committee members, Avraam I. Isayev, Thein Kyu, Darrell H. Reneker, Shing-Chung "Josh" Wong; Department Chair, Sadhan C. Jana; Dean of the College, Frank N. Kelley; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.

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35

Cham, Pak-Meng. "Study of the miscibility, crystallization and morphology in poly(propylene) based blends and copolymers." Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-06062008-151359/.

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36

McShane, P. M. "Optimization of the morphological, mechanical and rheological properties of novel polypropylene/ethylene-octene copolymer blends for automotive fuel line protection applications." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268405.

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37

Wang, Tong Kuan. "Adsorption de quelques polymeres a l'interface silice-eau : approche experimentale de leur conformation, correlation avec les mecanismes de floculation des suspensions colloidales." Paris 6, 1987. http://www.theses.fr/1987PA066221.

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Synthese de copolymeres d'acrylamide et d'un monomere acrylique porteur d'un groupement ammonium quaternaire. Comportement de ces polyelectrolytes et de quelques polymeres neutres (poe) vis a vis de suspensions colloidales de silice. Influence de la cationicite sur les isothermes d'adsorption. Influence de la conformation de chaines aux interfaces sur la stabilite des suspensions colloidales

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38

Erickson, David. "Viscosity of radial hydrogenated styrene-isoprene and block ethylene-propylene copolymer solutions under conditions of high shear rate and small channel size." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ63119.pdf.

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39

Ping, Zhenghua. "Déshydratation des alcools par pervaporation sur membranes hydrophiles : relation entre la nature et la structure des matériaux membranaires et le pouvoir séparateur des films." Vandoeuvre-les-Nancy, INPL, 1994. http://docnum.univ-lorraine.fr/public/INPL_T_1994_PING_Z.pdf.

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Des échantillons en alcool polyvinylique (PVA) de différents taux d'hydrolyse et de différentes cristallinités, modifiés par les méthodes de formation d'alliage de polymères et de réticulation chimique, ont été étudiés par diverses techniques afin de mettre en évidence des relations entre les structures des membranes et leurs performances dans la séparation de mélanges eau-alcool par pervaporation. Ces études portent essentiellement sur les interactions solvant-polymère, sur la variation du taux de cristallinité et sur les comportements des membranes en pervaporation et en perméation différent

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40

Pozza, Gladys. "Tailor-made heterofunctional poly(ethylene oxide)s via living anionic polymarization as building blocks in macromolecular engineering." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAF030/document.

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L'objectif principal de la thèse porte sur la synthèse contrôlée et la caractérisation d’architectures macromoléculaires complexes originales à base de POE. Les POEs α-undécènyle-ω-hydroxy sont obtenus par polymérisation anionique par ouverture de cycle de l’oxyde d’éthylène. Le groupement hydroxyle est modifié pour accéder à des POEs α-undécènyle-ω-méthacrylate et des POEs α-undécènyle-ω-acétylène. Ces premiers POEs sont ensuite utilisés pour préparer soit des POEs à structure en peigne par ATRP dans l'eau soit par l'intermédiaire de réaction « click », des POEs à structure en étoile tétrafon

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41

Intharapat, Punyanich. "Thermoplastic natural rubbers based on natural rubber (NR) and ethylene vinyl acetate copolymer (EVA) with natural rubber-graft- poly(dimethyl(methacryloyloxymethyl)phosphonate) (NR-g-PDMMMP) as compatibilizer." Le Mans, 2009. http://cyberdoc.univ-lemans.fr/theses/2009/2009LEMA1005.pdf.

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Des copolymères greffés à base de caoutchouc naturel (NR) et de poly(acryloyloxyméthylphosphonate de diméthyle) (NR-g-PDMAMP), de poly(méthacryloyloxyéthylphosphonate de diméthyle) (NR-g-PDMMEP) et de poly(méthacryloyloxyméthylphosphonate de diméthyle) (NR-gPDMMMP), ont été synthétisés en milieu latex selon la méthode dite « grafting from » à partir de sites amorceurs photosensibles N ,Ndiéthyldithiocarbamate préalablement introduits le long des chaînes 1,4-polyisoprène du caoutchouc naturel. Des études de compatibilisation des mélanges caoutchouc naturel (NR) / copolymère d'éthylène - acétate

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42

Curtet, Jean-Pierre. "Structure et micro-structure d'une nouvelle famille de copolyimides alternés à conduction mixte." Université Joseph Fourier (Grenoble), 1998. http://www.theses.fr/1998GRE10144.

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Notre travail entre dans le cadre de l'etude des materiaux polymeres conducteurs. Son objectif est de determiner la structure de nouveaux copolyimides alternes a conduction mixte pour la mettre en rapport avec leurs proprietes electriques. Ces copolyimides alternent regulierement sur une meme chaine un motif pyromellitimide electroactif et une sequence peo solvatante. Ces materiaux trouvent leur application comme composants dans les electrodes des accumulateurs a electrolyte polymere. En introduction nous definissons quelques concepts fondamentaux et nous presentons brievement les differents t

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43

Li, Chi-Hung, and 李奇鴻. "Preparation and Properties of Olefin Block Copolymer/Ethylene-Vinyl Acetate Copolymer and Composites." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/93215513382920393378.

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碩士<br>國立宜蘭大學<br>化學工程與材料工程學系碩士班<br>101<br>The study is the investigation on the shape memory behaviors of hollow silica-filled nanocomposites. At first,nano hollow silica was prepared using water/oil emulsion process with tetraethoxysilane as silica source and sodium hydrogen carbonate as a basic catalyst and a blowing agent. The results of scanning electron microscope (SEM) and transmission electron microscopy (TEM) showed the shell thickness of about 20 nm and hollow silica particle size of about 200~500 nm. Then, the olefin block copolymer (Olefin block copolymer, OBC) and ethylene vinyl ac

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44

Kinnibrugh, Garcia Karym G. "Functionalization of Poly(Ethylene Oxide)-based Diblock Copolymer Vesicles." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-8019.

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The principal goal of this research is to achieve the chemical labeling and surface modification of block copolymer vesicles (polymersomes) made from amphiphilic diblock copolymer Poly(butadiene-b-ethylene oxide) (PBd120- PEO89, MW 10400 g/mol) with the aim of developing possible drug carrier vehicles for controlled release of molecules triggered by stimuli-responsive environments. The terminal hydroxyl group of poly(ethylene oxide) (PEO), or poly(ethylene glycol) is converted into its corresponding carboxylic acid by a novel one-pot two-phase oxidation reaction. This regioselective and cataly

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45

Huang, Ching-Fu, and 黃慶福. "A Study on Foaming/Conductive/Mechanical Properties of Ethylene-Propylene Copolymer Dine/Olefin Block Copolymer Blends." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/09950847446784002530.

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碩士<br>崑山科技大學<br>材料工程研究所<br>101<br>This study aims to investigate the way one specific blend of EPDM (ethylene-propylene copolymer dine) and OBCs (Olefin Block Copolymers) exhibits by adding varying degrees of conductive carbon black along with foaming agent in terms of its foaming patterns, changes in resistivity and mechanical properties. The results show that the blend will cure and foam properly when the temperature is set at 170 degrees Celsius along with the foaming agent is controlled below 4phr. While the temperature is at and/or below 150 degrees Celsius and the foaming agent is applie

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Chen, Po-Tsun, and 陳柏村. "The Impact Toughening of Polystyrene by Ethylene-Vinyl Acetate Copolymer." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/98419770869017245318.

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碩士<br>國立成功大學<br>化學工程學系<br>88<br>Toughening of Polystyrene is the major object of this study. Traditionally, PB (Polybutadiene) is used as impact resistant modifier. The Disadvantages of PB are aging, degradation and recycle problems. In place of PB rubber, we use EVA (ethylene-vinyl acetate copolymer) to overcome these problems. However, EVA is incompatible with PS, giving poor adhesion at the interphase. By grafting PS onto EVA backbone, enhancing the mechanical properties and impact resistance of the PS matrix. When addition of 10% EVA, the impact strength increase five times than PS, but mo

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Chang, Jian-Sheng, and 張建盛. "Biohydrogen production with sewage sludge immobilized ethylene-vinyl acetate copolymer." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/03568105726393254481.

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碩士<br>逢甲大學<br>化學工程學所<br>92<br>Sewage sludge immobilized cells are applied for biohydrogen dark fermentation in our laboratory for many years. The immobilized cell particles were prepared by encapsulates approaches, meanwhile adding of ethylene vinyl acetate copolymer (EVA) to modify the particles physically and chemically. EVA immobilized cells show the advantages of mechanical strength and the stability of hydrogen production activity, which was believed to improve on the EVA immobilized cells. The experimental works were worked on the batch reactor firstly, and then carried out in a cont

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Hu, Jia-Yun, and 胡佳筠. "The Adsorption behavior of Poly(ethylene oxide)-block-Poly(propylene oxide)-block-Poly(ethylene oxide) copolymer." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/85285533648966278087.

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碩士<br>國立陽明大學<br>醫學工程研究所<br>93<br>This Study investigates the adsorption behavior of PEO-PPO-PEO (Pluronics) copolymer at air-liquid and solid-liquid interfaces. In order to understand the adsorption/desorption behavior of Pluronics, a series of Pluroncis with different molecular weight and hydrophobicity are studied. We also analyze the phase transition behavior of Pluronics, at various surface concentration. For the system of air-liquid interface, dynamic surface pressure are measured in-situ. We analyze the equilibrium surface pressure to delineate the phase transition behavior of Pluronci

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Zheng, Ren-Hao, and 鄭人豪. "Dynamic Modeling of High-Pressure Ethylene-Vinyl Acetate Copolymer Autoclave Reactor." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/33535074546716270323.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>90<br>A mathematical kinetic EVA model is developed to simulate the behavior of multizone, multifeed high-pressure EVA polymerization autoclave reactor. Dynamic mass and energy balance are derived to predict the polymerization rate, monomer concentration, molecular weight(Mw…etc.), and temperature profile with respect to the position in the reactor. The effects of grade transition on the EVA autoclave reactor model are investigated. It is shown that the proposed model is capable of predicting the behavior of EVA autoclaves and can be used for the process design, ope

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Wei-Ming, Chiu, and 邱維銘. "The study of toughening mechanism of propylene-ethylene block copolymer blends." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/07192280762884599666.

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