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Dissertations / Theses on the topic 'Rheology. Polymers'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Liu, Gengxin. "Nonlinear Rheology of Long-Chain Branched Polymers." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1436977058.

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2

Kunamaneni, Suneel. "Rheology of hyperbranched polymers." Thesis, University of Leeds, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396913.

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3

Callies, Xavier. "Rheology and Adhesion of Supramolecular Center-functionalized Polymers." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066663.

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Les adhésifs sensibles à la pression (PSAs) sont constitués de matériaux polymères mous qui collent presque instantanément sur presque tout type de surface. Les propriétés adhésives de ces matériaux sont principalement contrôlées par leurs propriétés rhéologiques et ainsi, par la structure moléculaire des polymères utilisés dans leur formulation. La nature des monomères, la distribution des masses molaires et le degré de réticulation sont des exemples de paramètres habituellement définis par les ingénieurs pour l’optimisation des adhésifs commerciaux. La singularité de notre projet est d’étudi

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4

Coventry, K. D. "Cross-slot rheology of polymers." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598081.

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This thesis describes a novel experimental system for the study of polymer flow in a cross-slot using a Cambridge Multi-Pass Rheometer (MPR). Cross-slot flow is capable of generating pure rotation-free extensional flow and the rheological information from the MPR is in a format which can easily be compared with the results of numerical simulations. Using only a small quantity of polymer, this technique provides a quantitative test of the performance of constitutive equations and numerical solvers in extensional flow. The cross-slot apparatus was developed and experiments were studied principal

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5

Tapadia, Prashant Subhashchandra. "NONLINEAR RHEOLOGY OF ENTANGLED POLYMERS." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1136007343.

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6

Eda, Goki. "Effects of solution rheology on electrospinning of polystyrene." Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-042706-135317/.

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7

Spenley, Neil Andrew. "Nonlinear rheology of micelles and polymers." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319338.

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8

Vorontsov, Sergey. "Rheology of Ionomers." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1429210577.

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9

Adeniran, A. O. "Studies on foams and surface rheology." Thesis, University of Bristol, 1986. http://hdl.handle.net/1983/543df002-9dc0-4b34-9f92-31e83c076466.

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10

Chung, Pong C. "Time-dependent rheology of polymer solutions /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487262825077271.

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11

Andrade, Ricardo. "EXTENSIONAL RHEOLOGY AND STRUCTURE DEVELOPMENT IN POLYMER SYSTEMS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1404744584.

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12

Daga, Vikram Kumar. "Rheology and electrospinning of neat and laponite-filled poly(ethylene oxide) solutions." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file Mb., 133 p, 2006. http://wwwlib.umi.com/dissertations/fullcit?1435916.

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13

Xu, Jianhua. "Rheology of polymeric suspensions polymer nanocomposites and waterborne coatings /." Columbus, Ohio : Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1127317214.

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14

Cui, Guanghui. "Synthesis, relaxation dynamics and rheology of supramolecular polymers." Thesis, University of Leeds, 2017. http://etheses.whiterose.ac.uk/19373/.

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A supramolecular polymer is a complex assembly of molecules held together by noncovalent bonds, such as hydrogen bonding, host-guest interactions or coordinative bonds. The last few decades great developments have been made in the research and application of supramolecular polymers, and a wide variety of supramolecular polymers have been prepared. These supramolecular polymers have been applied within many application areas, especially for medical applications such as drug or DNA delivery into living cells, and controlled drug release. However, many fundamental aspects such as the relaxation d

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15

Ramalingam, Suresh. "Fiber spinning and rheology of liquid-crystalline polymers." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/33813.

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16

Hawke, Laurence George Demosthenis. "Dynamics of branched polymers : motion, scattering and rheology." Thesis, University of Leeds, 2013. http://etheses.whiterose.ac.uk/6520/.

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Here, molecular models for the description of the dynamics and flow properties of melts of entangled branched polymers are developed. Their predictions are compared against data from MD simulations, NSE spectroscopy, and rheological measurements. Following an introductory chapter, in chapters 2 and 3 the attention is drawn to local branch point motion. Expressions for the MSD correlation functions are derived. The expression for the segmental MSD is compared against MD results [1], obtained from simulations in which arm ends are motionless, i.e. standard CR events are suppressed. This comparis

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17

Moolman, Pieter Lafras. "Rheology of coating systems." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53577.

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Thesis (MScEng)--Stellenbosch University, 2003.<br>ENGLISH ABSTRACT: Desired behaviour of paint during processing, storage, application and after application is of great importance in the coatings industry. Rheology (the study of flow and deformation behaviour) is used as a method to investigate the behaviour of the flow and deformation properties of the paint during these stages. Some of the more important phenomena that can occur during these stages, which were examined rheologically, are: 1. The rheological behaviour of certain complex raw materials during processing - vesiculated bea

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18

Huang, Chongwen. "Rheology of Oligomeric Sulfonated Polystyrene Ionomers." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1471281020.

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19

Dean, Katherine (Katherine Maree) 1974. "Epoxy-dimethacrylate interpenetrating polymer networks." Monash University, School of Physics and Materials Engineering, 2002. http://arrow.monash.edu.au/hdl/1959.1/7791.

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20

Dean, Katherine(Katherine Maree) 1974. "Epoxy-dimethacrylate interpenetrating polymer networks." Monash University, School of Physics and Materials Engineering, 2002. http://arrow.monash.edu.au/hdl/1959.1/8231.

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21

Lu, Bo. "Rheology and dynamics at the interface of multi micro-/nanolayered polymers." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEI133.

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Les travaux de cette thèse concernent des études fondamentales liées à la rhéologie et dynamique des chaines aux interfaces/interphases dans des structures polymères multi- micro et nano-couches obtenues par le procédé de coextrusion. Des couples de matériaux modèles présentant une compatibilisation physique et/ou chimique aux interfaces ont été étudiés. L’objectif ultime consiste en la compréhension des phénomènes multi-physiques et multi-échelles mis en jeu lors de l’élaboration du confinement de ces matériaux. Dans un premier temps, l'influence de «l'interphase diffuse» sur le comportement

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22

Chen, Hongyan. "Simulations of Shearing Rheology of Thermotropic Liquid Crystalline Polymers." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1210991980.

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23

Polińska, Patrycja. "Some thermodynamic, conformational and rheological properties of linear and hyperbranched polymer melts revisited." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAE008/document.

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Ce travail était centré sur les propriétés thermodynamiques et mécaniques des polymères denses et sur leurs liens avec les systèmes de la matière molle et l'étude des propriétés de conformation et les propriétés rhéologiques des polymères hyperbranchés. L'étude de polymères hyperbranchés montre qu'ils sont substantiellement différents de leurs analogues linéaires. En utilisant des méthodes de simulation, nous pouvons obtenir des informations inaccessibles par des méthodes expérimentales et heureusement obtenir de précieuses informations du point de vue industriel et scientifique. Cette étude t

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24

Scott, James Marvin. "An experimentally disigned melt rheological characterization of starblock polymers." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/90960.

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The melt rheological behavior of structurally defined starblock polymers was investigated using the experimental design technique of response surface methodology. A rotatable central composite design (ccd) was employed with linear 2⁵ factorial structure and with axial points to fit the pure quadratic terms. Regression analysis of rheological data from styrene-isoprene and t-butyl styrene-isoprene starblock polymers was used to generate four models whose terms have a p-value ≤ 0.1. The fitted models of viscosity and elasticity were a function of temperature, weight percent uncombined diblock, f

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25

Nelson, Burke I. "An improved in-line process rheometer for use as a process control sensor /." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=64059.

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26

Ravindranath, Sham. "How do Entangled Polymer Liquids Flow?" University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1281320132.

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27

Li, Xin. "Investigation of Non-linear Rheological Behavior of Polymeric Liquids." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1302374414.

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28

Tangvijitsakul, Pattarasai. "Methoxy Poly (Ethylene Glycol) Methacrylate- Based Copolymers on the Applications of Concrete Admixtures, Mesoporous Materials, and Rheology Modifiers." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1442440564.

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29

Chen, Yan. "Investigation of Single and Double Network Gels by Maximum Bubble Pressure Rheology." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1418329369.

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30

Zheng, Yexin. "MOLECULAR DYNAMICS SIMULATION STUDY OF NONLINEAR MECHANICAL BEHAVIOR FOR POLYMER GLASSES AND POLYMER RHEOLOGY." University of Akron / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=akron1595776504507743.

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31

Pickles, Adrian Philip. "The rheology, properties and morphology of thermotropic liquid crystalline polymers." Thesis, University of Liverpool, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317227.

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32

Conrad, Jason David. "The rheology, degradation, processing, and characterization of renewable resource polymers." Connect to this title online, 2009. http://etd.lib.clemson.edu/documents/1263396529/.

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33

Faers, Malcolm Andrew. "Polymers : their effect on the rheology of concentrated colloidal dispersions." Thesis, Imperial College London, 1995. http://hdl.handle.net/10044/1/12009.

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34

Criss, Jim McRae. "Synthesis, characterization, and study of polyimide processing additives and their effect on polyimide properties." Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/20015.

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35

Gatchair, Sonia Denise. "Rheological studies on the interaction of xanthan and locust bean gum in aqueous dispersions." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24670.

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Aqueous dispersions of xanthan and locust bean gum, in combination, show a synergistic increase in viscosity. At sufficiently high concentrations, firm gels are formed, although neither component forms true gels when alone. The actual molecular processes resulting in this phenomenon are still incompletely understood and Theological studies can provide some clues to the mechanism of the interaction. Rheological properties of the polysaccharide blend were therefore investigated. Moisture, ash and inorganic elements and protein content as well as the intrinsic viscosity of the individual polysa

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36

Fornof, Ann R. "Synthesis and Characterization of Multiphase, Highly Branched Polymers." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/27101.

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Rheological modification is frequently cited as a key application for hyperbranched polymers. However, the high degree of branching in these polymers restricts entanglement and the resultant mechanical properties suffer. Longer distances between branch points may allow entanglements. Highly branched polymers, where linear units are incorporated between branch points, are synthesized with an oligomeric A2 plus a monomeric B3. Higly branched polymers differ from traditional hyperbranched polymers in that every monomeric repeating unit of a hyperbranched polymer is a potential branch point, w

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37

Sprong, Ewan. "Structure/property relationship of model alkali-soluble rheology modifiers synthesised via the RAFT process." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53604.

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Thesis (PhD)--Stellenbosch University, 2003.<br>ENGLISH ABSTRACT: Alkali-soluble rheology modifiers are commercially synthesised via conventional freeradical polymerisation processes. This results in the end product having certain limitations; there is poor control over the molar mass, molar mass distribution and chain architecture of the polymer chains. These limitations can be overcome by using a controlled/living free radical polymerisation process, for example the RAFT process. This alternate method of synthesis was used here to prepare model alkali-soluble rheology modifiers. The s

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38

Huang, Wenyi. "Synthesis, Characterization, and Rheology of Functional and Heterocyclic Liquid Crystalline Polymers." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1163017445.

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39

Reynolds, Matthew. "Chain-length dependent rheology and relaxation dynamics in glass-forming polymers." Thesis, University of Leeds, 2018. http://etheses.whiterose.ac.uk/22750/.

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Glassy materials differ greatly from crystalline solids; their lack of long range order makes it difficult to model their behaviour. While a lot of work has been done regarding the properties of glass-forming polymers, their exact nature is not well understood. This thesis primarily focuses on the chain-length dependence of glassy dynamics, in particular poly(methyl methacrylate) (PMMA), which is of interest due to its commercial and industrial applications. Using dielectric spectroscopy, rheology, and calorimetry, the relaxation behaviour of chain-modes and the segmental, alpha, relaxation we

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40

Done, Dinshong. "Studies on the rheology and morphology of thermotropic liquid crystalline polymers." Diss., Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/77792.

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It is known that the physical properties of as-processed liquid crystalline polymers are highly dependent on the thermal and deformation histories of the materials experienced. The purpose of this study has been to examine the effect of thermal history on the rheology and morphological texture for several thermotropic liquid crystalline polymers. These include two copolyesters of para-hydroxybenzoic acid and polyethylene terephthalate and a copolymer of para-hydroxy benzoic acid and 6-hydroxy-2-naphthoic acid. For all three systems, it was found that the viscosities at temperatures below the n

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41

Babak, LotfizadehDehkordi Dr. "RHEOLOGY AND TRIBOLOGY OF LUBRICANTS WITH POLYMERIC VISCOSITY MODIFIERS." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1438208488.

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42

Read, Michael David. "An experimental and numerical analysis of the exit flow in a slit die for polymer melts." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/71270.

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A slit die has been constructed to use both flow birefringence and direct pressure measurements to study the extrapolated exit pressure (Px) and the exit pressure theory used to evaluate the magnitude of the primary normal stress difference (N1) from the value of the exit pressure. Flow birefringence is used to directly assess the principal assumptions in the exit pressure theory and to evaluate the magnitude of Px from an expression derived from the macroscopic momentum balance equation. The effect of stress field rearrangement upstream of the die exit plane on the value of the exit pressure

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43

Robert, Michael. "Rheology and morphology of polyolefin / functional oligomer blends : application to the formulation of polymer materials." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1033.

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L’objectif de ces travaux était l’utilisation d’oligomères de polyéthylène fonctionnels comme agents d’interface pour la formulation de matériaux polymères. Une première partie s’est portée sur la compréhension de l’évolution de la morphologie de mélanges composés d’une résine polypropylène ou polyéthylène et d’un oligomère de polyéthylène de faible masse molaire au cours de leur mise en œuvre et de leur cristallisation. Il a été constaté qu’un tel oligomère pouvait être incorporé sans difficulté aux résines sélectionnées, et ce grâce à une diffusion rapide ainsi qu’à une bonne miscibilité à l

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44

WENG, WENGUI. "GEL FORMATION OF METALLO-SUPRAMOLECULAR POLYMERS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1194555000.

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45

Fei, Pengzhan. "Investigation of a Side-Chain Crystalline Shape Memory Block Copolymer and Maximum Bubble Pressure Rheology of Organogels." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1384286113.

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46

Wilson, Thomas Stephen. "The rheology and structure of thermotropic liquid crystalline polymers in extensional flow." Diss., This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-05222007-091333/.

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47

Kempe, Michael David Kornfield Julia A. "Rheology and dynamics of side-group liquid crystalline polymers in nematic solvents /." Diss., Pasadena, Calif. : California Institute of Technology, 2004. http://resolver.caltech.edu/CaltechETD:etd-07202003-103429.

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48

Zhang, Huagui. "Fundamental studies of interfacial rheology at multilayered model polymers for coextrusion process." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0163.

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Les travaux de cette thèse concernent des études fondamentales liées à la rhéologie interfaciale des systèmes polymères multicouches. Les matériaux choisis sont à base de deux polymères compatibles,PVDF et PMMA de différentes masses molaires. Ces systèmes ont été étudiés sous sollicitations en cisaillement et en élongation suivant les deux régimes en viscoélasticité linéaire (VEL) et non-linéaire (VENL). Les études en VEL ont permis d’étudier la cinétique de développement de l’interphase. Quant aux études en VENL, elles ont permis d’étudier les propriétés intrinsèques de l’interphase simulant

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49

Terry, Ann Elizabeth. "Shear flow studies of liquid crystalline polymers." Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390373.

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50

Romo-Uribe, Angel. "Main-chain thermotropic liquid crystalline polymers under shear : a dynamic scattering study." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243155.

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