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Thèses sur le sujet « Polymer colloids »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 1 août 2024

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1

Quarcoo, Naa Larteokor. "Modeling polymer-colloid phase behavior." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 152 p, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:1440615.

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2

Köhler, Werner. "Hot colloids in polymer networks." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-179496.

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3

Cohen, Jack Andrew. "Active colloids and polymer translocation." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:e8fd2e5d-f96f-4f75-8be8-fc506155aa0f.

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This thesis considers two areas of research in non-equilibrium soft matter at the mesoscale. In the first part we introduce active colloids in the context of active matter and focus on the particular case of phoretic colloids. The general theory of phoresis is presented along with an expression for the phoretic velocity of a colloid and its rotational diffusion in two and three dimensions. We introduce a model for thermally active colloids that absorb light and emit heat and propel through thermophoresis. Using this model we develop the equations of motion for their collective dynamics and con

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4

Golz, Paul Michael. "Dynamics of colloids in polymer solutions." Thesis, University of Edinburgh, 1999. http://hdl.handle.net/1842/10922.

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The dynamics of a dilute suspension of colloids diffusing in a simple liquid are well understood and are characterised by the Stokes-Einstein equation. However the validity of this equation for describing the diffusion of a colloid through a polymer solution has been questioned. In this work the motion of dilute poly-methylmethacrylate spheres diffusing through a solution of flexible polystyrene polymers has been studied. Dynamic light scattering was used to measure the self-diffusion of the spheres and the diffusion coefficient for this motion was found to exhibit time dependence. At short ti

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5

Green, Nicholas David. "Investigating clay-nonionic polymer interactions." Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389120.

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6

Mahaffy, Rachel Elaine. "The quantitative characterization of the viscoelastic properties of cells and polymer gels /." Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3004328.

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7

Chen, Yuanye. "Synthesis and Study of Engineered Heterogenous Polymer Gels." Thesis, University of North Texas, 1998. https://digital.library.unt.edu/ark:/67531/metadc278503/.

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This dissertation studies physical properties and technological applications of engineered heterogenous polymer gels. Such gels are synthesized based on modulation of gel chemical nature in space. The shape memory gels have been developed in this study by using the modulated gel technology. At room temperature, they form a straight line. As the temperature is increased, they spontaneously bend or curl into a predetermined shape such as a letter of the alphabet, a numerical number, a spiral, a square, or a fish. The shape changes are reversible. The heterogenous structures have been also obtain

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8

Liang, Ya Palmese Giuseppe R. Lowman Anthony M. "Functional polymer-polymer composites by nano/meso-fiber encapsulation : applications in drug delivery systems and polymer toughening /." Philadelphia, Pa. : Drexel University, 2010. http://hdl.handle.net/1860/3316.

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9

Wu, Lin. "Synthesis, modification and applications of polymer colloids." Thesis, University of Leeds, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.581974.

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Three approaches were used for the preparation of polymer colloids, including block copolymer micellization, miniemulsion and dispersion polymerisation. Polymers, ego PDMAEMA, PDMAEMA-b-PBMA, P(PDMA-PS)4, P(PS-PDMA)4, involved in the preparation were synthesized using reversible addition fragmentation chain transfer (RAFT) polymerisation. The details of each approach are given below. In the first approach, well-defined amphiphilic star block copolymers, P-(PS- PDMA)4 and P-(PDMA-PS)4 (P: porphyrin) were prepared from a free base porphyrin-cored chain transfer agent (CTA-FBP) and used for self-

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10

Steward, Paul A. "Modification of the permeability of polymer latex films." Thesis, Nottingham Trent University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296030.

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11

Higginbotham, Catrena Pearl. "The characterization and manipulation of the internal pore structure of tetramethoxysilane sol-gels and polymer hybrid gels." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/30556.

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12

Ramírez, Ríos Liliana Patricia. "Superpara- and paramagnetic polymer colloids by miniemulsion processes." [S.l. : s.n.], 2004. http://pub.ub.uni-potsdam.de/2004/0026/ramirez.pdf.

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13

Ramírez, Ríos Liliana Patricia. "Superpara- and paramagnetic polymer colloids by miniemulsion processes." Phd thesis, Universität Potsdam, 2004. http://opus.kobv.de/ubp/volltexte/2005/137/.

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Polymerverkapselte magnetische Nanopartikel versprechen, in der Zukunft sehr erfolgreich bei Anwendungen in der Biologie und der Medizin eingesetzt werden zu können z. B. in der Krebstherapie und als Kontrastmittel bei der magnetischen Kernspinresonanztomographie. Diese Arbeit zeigt, dass durch die interdisziplinäre Kombination verschiedener Techniken Herstellungsverfahren und Eigenschaften solcher Partikel verbessert werden können. <br /> <br /> Unter Miniemulsionen versteht man wässrige Dispersionen relativ stabiler Öltröpfchen, zwischen 30 und 50 nm Größe. Ein Nanometer (nm) ist der 1.000.0

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14

Hibberd, David. "Use of ultrasound to characterise polymer induced flocculation." Thesis, University of East Anglia, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267709.

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15

Popovic, Suzana. "Design of electro-active polymer gels as actuator materials /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/7053.

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16

Qi, Zhigang. "Synthesis of conducting polymer colloids, hollow nanoparticles, and nanofibers." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40229.

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Colloidal polypyrrole and polyaniline stabilized by anionic surfactants were prepared and characterized. A "pseudo-micelle" model has been proposed. The aggregation of pseudo-micelles on the forming polymer chains is believed to be the key step in the stabilization process. Only when the aggregation is possible and fast enough to follow the polymer formation, will the polymer be stabilized.<br>Colloidal polypyrrole and polyaniline were prepared in the presence of the sodium salt of poly(styrene sulfonate). The polymerization is believed to follow a template-guided fashion in which poly(styrene

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17

Zholobko, Oksana. "Functional Colloids from Amphiphilic Polymer Assemblies and Peptides/Polypeptides." Diss., North Dakota State University, 2019. https://hdl.handle.net/10365/29963.

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The use of responsive polymers, where even minor changes in one of the macromolecular characteristics triggered by the external stimuli can cause drastic changes in the material function or performance, is widely studying area of research. Formation of the thermodynamically stable polymer-peptide colloids, such as mixed micellar assemblies or polymer-enzyme conjugates, loading capacity of the colloids, and cargo activity all depend on the macromolecular interactions within the peptide/polypeptide-polymer system. The goal of this work is to investigate interactions between range of new polymers

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18

Garner, Brett William Neogi Arup. "Multifunctional organic-inorganic hybrid nanophotonic devices." [Denton, Tex.] : University of North Texas, 2008. http://digital.library.unt.edu/permalink/meta-dc-6108.

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19

Jia, Zichen. "Stability, aggregation kinetics and aggregates thermal restructuring of polymer colloids /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16913.

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20

Wilkinson, Terence Sean. "Photophysical studies of waterborne polymer colloids and their film formation." Thesis, Lancaster University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302429.

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21

Ma, Yanhui. "Graft copolymer micelles and surface modification with polymer micelles /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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22

Vandoolaeghe, Wendy Leigh. "Polymer networks at surfaces." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53552.

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Thesis (MSc)--Stellenbosch University, 2003.<br>ENGLISH ABSTRACT: In this thesis the formation and properties of a polymer gel on and at a surface are investigated. The gel under investigation is defined as a three-dimensional network of macromolecules that form permanent links with one another and also with confining planar surfaces. The precise location of the crosslinks on the wall or on another macromolecule is not known prior to linking, and will differ from sample to sample. However, once the crosslinks are formed, they are assumed to be permanent. This random linking is the sourc

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23

Abbott, Nicholas L. (Nicholas Lawrence). "Interactions of flexible polymers and globular colloids : understanding protein partitioning in two-phase aqueous polymer systems." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/82741.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1992.<br>Science hard copy is bound in 1 v.<br>Includes bibliographical references (leaves 364-377).<br>by Nicholas L. Abbott.<br>Ph.D.

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24

Hunt, Paul Edward. "Protective colloids : understanding nucleation and grafting." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/protective-colloids-understanding-nucleation-and-grafting(a5f5c8c9-acc7-492b-bf81-3cf327af98cf).html.

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Alkali-soluble resins (ASRs) were prepared by (i) solution and (ii) emulsion polymerization. All ASRs were synthesized with number-average molar masses < 20,000 g mol-1 and all had 15 wt% methacrylic acid 5 wt% styrene, the remaining 80 wt% was composed of either methyl methacrylate or a combination of methyl methacrylate and ethyl acrylate. All emulsion ASRs were made to 20% solids, with volume-average particle diameters (dv) in the region 30 – 50 nm, with a glass transition temperature of 80 – 120 °C. Emulsion polymerization was the preferred route for ASR synthesis, to allow further studies

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25

Di, Dio Bruno Flavio. "Time-dependent rheology of soft particle glasses." Electronic Thesis or Diss., Université Paris sciences et lettres, 2023. http://www.theses.fr/2023UPSLS026.

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Comportement rhéologique dépendant du temps dans les verres colloïdaux de particules déformablesNous étudions des verres colloïdaux constitués de suspensions denses de particules déformables dans un fluide suspendant. Des exemples pratiques comprennent beaucoup de matériaux pâteux tels que les encres solides, les produits de soins personnels et certaines préparations alimentaires. Ces matériaux se comportent comme des fluides à seuil d’écoulement qui répondent de façon élastique à des petites déformations mais s’écoulent au-delà d’une contrainte seuil. Beaucoup de travaux expérimentaux et théo

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26

Köhler, Werner. "Hot colloids in polymer networks: cage formation and transient network deformation." Diffusion fundamentals 20 (2013) 13, S. 1, 2013. https://ul.qucosa.de/id/qucosa%3A13535.

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27

Pirie, Angus D. "A light scattering study of colloid-polymer mixtures." Thesis, University of Edinburgh, 1995. http://webex.lib.ed.ac.uk/homes/pirie95.html.

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28

Li, Chʻun-fang. "Scaling Behaviors and Mechanical Properties of Polymer Gels." Thesis, University of North Texas, 1994. https://digital.library.unt.edu/ark:/67531/metadc279278/.

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Polymer gels undergo a volume phase transition in solvent in response to an infinitesimal environmental change. This remarkable phenomenon has resulted in many potential applications of polymer gels. The understanding of its mechanical properties has both scientific and technological importance. For this purpose, we have developed a novel method for measuring Poisson's ratio, which is one of the most important parameters determining the mechanical property of gels. Using this method, Poisson's ratio in N-isopropyacrylamide (NIPA) and polyacrylamide (PAAM) gels has been studied.

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29

Lee, Jung-Hyun. "Interface engineering in zeolite-polymer and metal-polymer hybrid materials." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37120.

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Inorganic-polymer hybrid materials have a high potential to enable major advances in material performance in a wide range of applications. This research focuses on characterizing and tailoring the physics and chemistry of inorganic-polymer interfaces in fabricating high-performance zeolite-polymer mixed-matrix membranes for energy-efficient gas separations. In addition, the topic of novel metal nanoparticle-coated polymer microspheres for optical applications is treated in the Appendix. In zeolite/polymer mixed-matrix membranes, interfacial adhesion and interactions between dope components

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30

Sun, Zhengfei Wei Yen. "Novel sol-gel nanoporous materials, nanocomposites and their applications in bioscience /." Philadelphia, Pa. : Drexel University, 2005. http://dspace.library.drexel.edu/handle/1860/556.

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31

Saw, Lin K. "Phase inversion in polyurethane prepolymer-water dispersions." Thesis, Loughborough University, 2000. https://dspace.lboro.ac.uk/2134/15350.

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Aqueous polyuethane (PU) colloids, like many other water-borne polymer colloids, have become an increasingly important class of materials in the surface coating industry. Three processing stages, the pre-dispersion, dispersion and postdispersion stages, are generally involved in the production of aqueous PU colloids. However, existing researches have neglected the importance of the dispersion stage. The present study aims to develop better understanding of the dispersion stage during the production of aqueous PU colloids. Non chain-extendable PU pre-polymer (PUp) is used to enable independent

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32

Zhou, Jun Hu Zhibing. "Stimuli-responsive microgels for self-assembled crystalline structures and controlled drug release." [Denton, Tex.] : University of North Texas, 2009. http://digital.library.unt.edu/permalink/meta-dc-11001.

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33

Lu, Xihua. "Polymer hydrogel nanoparticles and their networks." Thesis, University of North Texas, 2002. https://digital.library.unt.edu/ark:/67531/metadc3232/.

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The thermally responsive hydroxypropyl cellulose (HPC) hydrogel nanoparticles have been synthesized and characterized. The HPC particles were obtained by chemically crosslinking collapsed HPC polymer chains in water-surfactant (dodecyltrimethylammonium bromide) dispersion above the lower critical solution temperature (LCST) of the HPC. The size distributions of microgel particles, measured by dynamic light scattering, have been correlated with synthesis conditions including surfactant concentration, polymer concentration, and reaction temperature. The swelling and phase transition propert

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34

Dumetz, Andre C. "Protein interactions and phase behavior in aqueous solutions effects of salt, polymer, and organic additives /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 284 p, 2008. http://proquest.umi.com/pqdweb?did=1456290971&sid=2&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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Thesis (Ph.D.)--University of Delaware, 2007.<br>Principal faculty advisor: Abraham M. Lenhoff, Dept. of Chemical Engineering, and Eric W. Kaler, College of Engineering . Includes bibliographical references.

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35

Downey, Jeffrey S. "Precipitation polymerization of divinylbenzene to monodisperse microspheres : an investigation of the particle formation mechanism /." *McMaster only, 2000.

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36

Choi, Ming Fai. "Design and synthesis of coordination polymer gels and high dichroic ratio azo dyes /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202002%20CHOI.

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37

Zhou, Bo. "The preparation and characterization of thermo-sensitive colored hydrogel film and surfactant-free porous polystyrene three-dimensional network." Thesis, University of North Texas, 2001. https://digital.library.unt.edu/ark:/67531/metadc3019/.

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Polymer hydrogel films change their properties in response to environmental change. This remarkable phenomenon results in many potential applications of polymer hydrogel films. In this thesis colored thermo-sensitive poly(N-isopropylacrylamide) (PNIPAAm) hydrogel film was prepared by firstly synthesizing polymer latex and secondarily crosslinking the nanoparticles and casting the polymers onto glass. The shape-memory effect has been observed when changing the environmental temperature. The temperature-dependent of turbidity of polymer hydrogel film was measured by HP UVVisible spectrophotomete

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38

Nasakul, Siree. "Thermoreversible gels and temperature triggered kinetically controlled gels for oilfield applications /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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39

Walther, Andreas. "Soft compartmentalized polymer colloids : janus particles, multicompartment structures, inorganic-organic hybrids and applications." kostenfrei, 2008. http://opus.ub.uni-bayreuth.de/volltexte/2008/496/.

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40

Quant, Carlos Arturo. "Colloidal chemical potential in attractive nanoparticle-polymer mixtures: simulation and membrane osmometry." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/7616.

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The potential applications of dispersed and self-assembled nanoparticles depend critically on accurate control and prediction of their phase behavior. The chemical potential is essential in describing the equilibrium distribution of all components present in every phase of a system and is useful as a building block for constructing phase diagrams. Furthermore, the chemical potential is a sensitive indicator of the local environment of a molecule or particle and is defined in a mathematically rigorous manner in both classical and statistical thermodynamics. The goal of this research is to u

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41

Quant, Carlos A. "Colloidal chemical potential in attractive nanoparticle-polymer mixtures simulation and membrane osmometry /." Available online, Georgia Institute of Technology, 2004, 2004. http://etd.gatech.edu/theses/available/etd-08162004-112543/.

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42

Marla, Krishna Tej. "Molecular thermodynamics of nanoscale colloid-polymer mixures: chemical potentials and interaction forces." Available online, Georgia Institute of Technology, 2004, 2004. http://etd.gatech.edu/theses/available/etd-08102004-105655/.

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Thesis (Ph. D.)--Chemical Engineering, Georgia Institute of Technology, 2006.<br>Dr. J. Carson Meredith, Committee Chair ; Dr. Charles A. Eckert, Committee Member ; Dr. Clifford L. Henderson, Committee Member ; Dr. Rigoberto Hernandez, Committee Member ; Dr. Peter J. Ludovice, Committee Member. Vita. Includes bibliographical references.

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43

Zhang, Xiaomin. "Synthesis and Physical Properties of Environmentally Responsive Polymer Gels." Thesis, University of North Texas, 1996. https://digital.library.unt.edu/ark:/67531/metadc277945/.

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Polymer gels undergo the volume phase transition in response to an infinitesimal environmental change. This remarkable phenomenon results in many potential applications of polymer gels. This dissertation systematically investigates the chemical and physical properties of polymer gels. It is found that infrared radiation laser not only induces a volume phase transition in N-isopropylacrylamide (NIPA) gel, but also causes the gel to bend toward the laser beam. The transmission of visible laser light through a NIPA gel can also be controlled by adjusting the infrared laser power. A new class of e

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44

Bagoury, Mohamed al. "Synthesis of aqueous polymer colloids based on saccharide monomers and alkyl acrylates through emulsion polymerization." [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=974074527.

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45

Brindley, Anne. "The preparation and characterization of model polymer colloids for potential site-specific drug delivery systems." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335470.

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46

Wang, Changjie. "Polymer Gels: Kinetics, Dynamics Studies and Their Applications as Biomaterials." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4379/.

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The polymer gels especially hydrogels have a very special structure and useful features such as unusual volume phase transition, compatibility with biological systems, and sensitivity to environmental stimuli (temperature, pH value, electric field, light and more), which lead to many potential applications in physical and biochemical fields. This research includes: (1) the theoretical and experimental studies of polymer gels on swelling kinetics, spinodal decomposition, and solution convection in gel matrix; (2) applications of polymer gels in wound dressing, tissue-simulating optical phantom

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47

Pillai, Karthikeyan Chyan Oliver Ming-Ren. "FTIR-ATR characterization of hydrogel, polymer films, protein immobilization and benzotriazole adsorption on copper surface." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-5132.

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48

Hendrickson, Grant R. "Harnessing microgel softness for biointerfacing." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50252.

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Hydrogel materials have become a heavily studied as materials for interfacing with biology both for laboratory investigations and the development of devices for biomedical applications. These polymers are water swellable and can be made responsive to many different stimuli by choice of monomers, co-monomers, and cross-linkers or functionalization with pendent ligands, substrates, or charged groups. The high water content, low moduli and potential responsively of these polymers make good candidates for biomaterials. A specific type of hydrogel called a microgel or a hydrogel micro/nanoparticle

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49

Wang, Sheng. "Phosphorus-Containing Polymers, Their Blends, and Hybrid Nanocomposites with Poly(Hydroxy Ether), Metal Chlorides, and Silica Colloids." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/26789.

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Phosphorus-containing high performance polymers have been extensively studied during the last 10 years. These materials are of interest for a variety of optical and fire resistant properties, as well as for their ability to complex with the inorganic salts. This dissertation has focused on the nature of the phosphonyl group interactions with hydroxyl containing polymers, such as the poly(hydroxy ether)s. These may be considered linear models of epoxy resins and are also closely related to dimethacrylate (vinyl ester) matrix resins that are important for composite systems. It has been shown tha

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50

Zhou, Jun. "Stimuli-responsive microgels for self-assembled crystalline structures and controlled drug release." Thesis, University of North Texas, 2009. https://digital.library.unt.edu/ark:/67531/metadc11001/.

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Tissue response to PNIPAM and HPC nanoparticles has been studied by implantation method. The results suggest that both PNIAPM and HPC nanoparticles possess good biocompatibility and they may serve as a good carrier for the applications of controlled delivery. Rheological properties of dispersions of IPN microgels composed of PNIPAM and PAAc have been studied. It is found that the IPN microgel dispersion can undergo a sol-gel transition at temperature above 33°C. In vivo drug release experiments suggest that the gelation procedure creates a diffusion barrier and thus leads to slow release. An e

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