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Littérature scientifique sur le sujet « Polymer colloids »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 1 août 2024

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Articles de revues sur le sujet "Polymer colloids"

Lattuada, Marco, and Kata Dorbic. "Polymer Colloids: Moving beyond Spherical Particles." CHIMIA 76, no. 10 (October 26, 2022): 841. http://dx.doi.org/10.2533/chimia.2022.841.

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When thinking about colloidal particles, the fist image that comes into mind is that of tiny little polystyrene spheres with a narrow size distribution. While spherical polymer colloids are one of the workhorses of colloid science, scientists have been working on the development of progressively advanced strategies to move beyond particles with spherical shapes, and prepared polymer colloids with more complex morphologies. This short review aims at providing a summary of these developments, focusing primarily on methods applicable to submicron particles, with an eye towards their applications

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Lee, Kyoungmun, and Siyoung Q. Choi. "Stratification of polymer–colloid mixtures via fast nonequilibrium evaporation." Soft Matter 16, no. 45 (2020): 10326–33. http://dx.doi.org/10.1039/d0sm01504k.

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Priyadarshini, N., M. Sampath, Shekhar Kumar, U. Kamachi Mudali, and R. Natarajan. "Probing Uranium(IV) Hydrolyzed Colloids and Polymers by Light Scattering." Journal of Nuclear Chemistry 2014 (March 26, 2014): 1–10. http://dx.doi.org/10.1155/2014/232967.

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Tetravalent uranium readily undergoes hydrolysis even in highly acidic aqueous solutions. In the present work, solutions ranging from 0.4 to 19 mM (total U) concentration (1<pH<4) are carefully investigated by light scattering technique with special emphasis on polymerization leading to colloid formation. The results clearly indicate that the concentration has significant effect on particle size as well as stability of colloids. With increasing concentration the size of colloids formed is smaller due to more crystalline nature of the colloids. Stability of colloids formed at lower concen

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La Mesa, Camillo. "Hybrid Colloids Made with Polymers." Applied Sciences 14, no. 12 (June 13, 2024): 5135. http://dx.doi.org/10.3390/app14125135.

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Polymers adsorb onto nanoparticles, NPs, by different mechanisms. Thus, they reduce coagulation, avoid undesired phase separation or clustering, and give rise to hybrid colloids. These find uses in many applications. In cases of noncovalent interactions, polymers adsorb onto nanoparticles, which protrude from their surface; the polymer in excess remains in the medium. In covalent mode, conversely, polymers form permanent links with functional groups facing outward from the NPs’ surface. Polymers in contact with the solvent minimize attractive interactions among the NPs. Many contributions stab

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Ali, Imran, Sara H. Althakfi, Mohammad Suhail, Marcello Locatelli, Ming-Fa Hsieh, Mosa Alsehli, and Ahmed M. Hameed. "Advances in Polymeric Colloids for Cancer Treatment." Polymers 14, no. 24 (December 13, 2022): 5445. http://dx.doi.org/10.3390/polym14245445.

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Polymer colloids have remarkable features and are gaining importance in many areas of research including medicinal science. Presently, the innovation of cancer drugs is at the top in the world. Polymer colloids have been used as drug delivery and diagnosis agents in cancer treatment. The polymer colloids may be of different types such as micelles, liposomes, emulsions, cationic carriers, and hydrogels. The current article describes the state-of-the-art polymer colloids for the treatment of cancer. The contents of this article are about the role of polymeric nanomaterials with special emphasis

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Smith, Gregory N., Matthew J. Derry, James E. Hallett, Joseph R. Lovett, Oleksander O. Mykhaylyk, Thomas J. Neal, Sylvain Prévost, and Steven P. Armes. "Refractive index matched, nearly hard polymer colloids." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 475, no. 2226 (June 2019): 20180763. http://dx.doi.org/10.1098/rspa.2018.0763.

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Refractive index matched particles serve as essential model systems for colloid scientists, providing nearly hard spheres to explore structure and dynamics. The poly(methyl methacrylate) latexes typically used are often refractive index matched by dispersing them in binary solvent mixtures, but this can lead to undesirable changes, such as particle charging or swelling. To avoid these shortcomings, we have synthesized refractive index matched colloids using polymerization-induced self-assembly (PISA) rather than as polymer latexes. The crucial difference is that these diblock copolymer nanopar

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Okubo, Masayoshi. "Polymer Colloids." Kobunshi 40, no. 10 (1991): 704–7. http://dx.doi.org/10.1295/kobunshi.40.704.

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Huglin, Malcolm B. "Polymer colloids." Polymer 27, no. 4 (April 1986): 635. http://dx.doi.org/10.1016/0032-3861(86)90253-3.

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Soetrisno, Diego D., Carina D. V. Martínez Narváez, Mariah J. Gallegos, Vivek Sharma, and Jacinta C. Conrad. "Pinching dynamics and extensional rheology of dense colloidal suspensions with depletion attractions." Journal of Rheology 68, no. 1 (December 29, 2023): 99–112. http://dx.doi.org/10.1122/8.0000717.

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We study the extensional flow properties by characterizing the capillarity-driven pinching dynamics of dense colloidal suspensions at a constant volume fraction ϕ=0.40 with polymer-induced depletion interactions using a dripping-onto-substrate (DoS) protocol. Methacrylate copolymer particles with dimethylacrylamide copolymer brushes are suspended in a refractive-index- and density-matched mixture of 80 (w/w)% glycerol in water with NaCl added to screen the electrostatic repulsions. Depletion attractions between the colloids are introduced by adding polyacrylamide polymers of weight and dispers

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Wang, Likun, Zhaoran Chu, Xuanjun Ning, Ziwei Huang, Wenwei Tang, Weizhong Jiang, Jiayi Ye, and Cheng Chen. "Inverse Colloidal Crystal Polymer Coating with Monolayer Ordered Pore Structure." Crystals 12, no. 3 (March 11, 2022): 378. http://dx.doi.org/10.3390/cryst12030378.

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A functional lens coating, based on the structure of inversed colloidal photonic crystals, is proposed. The color-reflecting colloidal crystal was first prepared by self-assembly of nano-colloids and was infiltrated by adhesive polymer solution. As the polymer was crosslinked and the crystal array was removed, a robust mesh-like coating was achieved. Such a functional coating has good transmittance and has a shielding efficiency of ~9% for UV–blue light according to different particle sizes of the nano-colloids, making it an ideal functional material.

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Thèses sur le sujet "Polymer colloids"

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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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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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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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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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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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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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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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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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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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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Livres sur le sujet "Polymer colloids"

R, Buscall, Corner T, and Stageman J. F, eds. Polymer colloids. London: Elsevier Applied Science Publishers, 1985.

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Daniels, Eric S., E. David Sudol, and Mohamed S. El-Aasser, eds. Polymer Colloids. Washington, DC: American Chemical Society, 2001. http://dx.doi.org/10.1021/bk-2002-0801.

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Priestley, Rodney, and Robert Prud'homme, eds. Polymer Colloids. Cambridge: Royal Society of Chemistry, 2019. http://dx.doi.org/10.1039/9781788016476.

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Fitch, Robert McLellan. Polymer colloids: A comprehensive introduction. San Diego: Academic Press, 1997.

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El-Aasser, Mohamed S., and Robert M. Fitch, eds. Future Directions in Polymer Colloids. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3685-0.

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Candau, Françoise, and Ronald H. Ottewill, eds. An Introduction to Polymer Colloids. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0521-4.

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1943-, Candau Françoise, Ottewill Ronald H, and NATO Advanced Study Institute on Polymer Colloids (1988 : Strasbourg, France), eds. An Introduction to polymer colloids. Dordrecht: Kluwer Academic Publishers, 1990.

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S, El-Aasser Mohamed, Fitch Robert McLellan 1928-, and North Atlantic Treaty Organization. Scientific Affairs Division., eds. Future directions in polymer colloids. Dordrecht: Published in cooperation with NATO Scientific Affairs Division by M. Nijhoff, 1987.

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Eric, Dickinson, and Royal Society of Chemistry (Great Britain), eds. Food polymers, gels and colloids: Based on the proceedings of an international symposium organized by the Food Chemistry Group of the Royal Society of Chemistry of Norwich, from 28th-30th March, 1990. Cambridge: Royal Society of Chemistry, 1991.

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Polymer Networks Group Meeting (16th 2002 Autrans, France). Functional networks and gels: Papers presented at the 16th Polymer Networks Group Meeting : polymer networks 2002 : held in Autrans, France, 2-6 September 2002. Edited by Geissler Erik and International Union of Pure and Applied Chemistry. Macromolecular Division. Weinheim, Germany: Wiley-VCH, 2003.

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Chapitres de livres sur le sujet "Polymer colloids"

Lekkerkerker, Henk N. W., Remco Tuinier, and Mark Vis. "Further Manifestations of Depletion Effects." In Colloids and the Depletion Interaction, 343–60. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-52131-7_11.

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AbstractIn this chapter we provide examples of the manifestations of depletion effects in areas such as biology and technology. The addition of nonadsorbing polymers to colloidal suspensions can cause phase separation of the mixture into a colloid-rich and a polymer-rich phase.

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Lekkerkerker, Henk N. W., Remco Tuinier, and Mark Vis. "The Interface in Demixed Colloid–Polymer Dispersions." In Colloids and the Depletion Interaction, 185–204. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-52131-7_5.

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AbstractIn Chaps. 3 and 4, the focus was on theory and experiments related to the phase behaviour of mixtures containing colloidal spheres and nonadsorbing polymers. As we have seen, when the polymer coils are sufficiently large relative to the colloidal spheres, a colloidal gas–liquid (fluid–fluid) phase separation may occur. The two phases that appear differ in composition. One phase is a dilute colloidal fluid (a colloidal ‘gas’) dispersed in a concentrated polymer solution. This phase coexists with a concentrated colloidal fluid (a colloidal ‘liquid’) dispersed in a dilute polymer solution.

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Ho, Chee-Cheong. "Colloids in Industries: Polymer Colloids." In Encyclopedia of Colloid and Interface Science, 117–45. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-20665-8_167.

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Dawkins, J. V., and S. A. Shakir. "Nonaqueous Polymer Colloids." In ACS Symposium Series, 432–44. Washington, DC: American Chemical Society, 1992. http://dx.doi.org/10.1021/bk-1992-0492.ch027.

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Rowell, R. L. "Characterization of Polymer Colloids." In An Introduction to Polymer Colloids, 187–208. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0521-4_7.

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Rowell, R. L. "Characterization of Polymer Colloids." In Scientific Methods for the Study of Polymer Colloids and Their Applications, 187–208. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-1950-1_7.

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Ottewill, R. H. "Stability of Polymer Colloids." In Polymeric Dispersions: Principles and Applications, 31–48. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5512-0_3.

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Ottewill, R. H. "Characterization of Polymer Colloids." In Future Directions in Polymer Colloids, 253–75. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3685-0_16.

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González García, Álvaro. "On the Colloidal Stability of Association Colloids." In Polymer-Mediated Phase Stability of Colloids, 113–29. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-33683-7_7.

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Lekkerkerker, Henk N. W., Remco Tuinier, and Mark Vis. "Phase Separation and Long-Lived Metastable States in Colloid–Polymer Mixtures." In Colloids and the Depletion Interaction, 143–84. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-52131-7_4.

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AbstractWhen a dispersion containing spherical colloids is mixed with a polymer solution two kinds of instabilities can occur, as depicted in Fig. 4.1: (1) bridging flocculation caused by adsorbing polymer chains or (2) unmixing driven by the depletion force.

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Actes de conférences sur le sujet "Polymer colloids"

Chu, Benjamin. "Laser Light Scattering of Polymer Solutions." In Photon Correlation and Scattering. Washington, D.C.: Optica Publishing Group, 1996. http://dx.doi.org/10.1364/pcs.1996.wb.1.

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Laser light scattering (LLS), small angle x-ray scattering (SAXS) and small angle neutron scattering (SANS) are complementary techniques.1 Together they become unmatched among the physical methods which can investigate the structure and dynamics of polymeric materials over a large range of length and time scales. The unique features of LLS are its ability to determine not only molecular weight, size and internal motions of polymers in solution or of colloids in suspension, but also the size distribution. The applications of LLS to polymer physics and colloid science have been extensive and not

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Joseph, David, and Krishan Kumar. "Static light scattering studies of polymer colloids." In DAE SOLID STATE PHYSICS SYMPOSIUM 2018. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5112893.

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Zhu, S. S., and H. Chen. "Fluorinated Polyzwitterion Coatings for Stabilizing Colloids and Lowing Retention of Nanoparticles." In International Petroleum Technology Conference. IPTC, 2024. http://dx.doi.org/10.2523/iptc-23933-ms.

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Abstract Nanoparticles (NP) injected in hydrocarbon reservoirs, as inter-well tracers or an enhanced oil recovery (EOR) method, has been of great interest in petroleum engineering. However, NP's retention in reservoir conditions of high salinity and high temperature is one of the challenges in these applications because high retention is economically unfavorable. We explored the concept of applying lightly fluorinated polyzwitterions as a coating on hydrophobic styrenic nanoparticles that had previously shown significant adsorption on rock surfaces. This is a less explored area of research tha

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Mayavan, S., N. R. Choudhury, and N. K. Dutta. "Polymer stabilized noble metal colloids for catalytic and biomedical applications." In Smart Materials, Nano-and Micro-Smart Systems, edited by Nicolas H. Voelcker and Helmut W. Thissen. SPIE, 2008. http://dx.doi.org/10.1117/12.810659.

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Lin, Y. C., H. L. Chen, T. K. Hsu, C. H. Lin, K. C. Hsieh, and H. C. Cheng. "Tuning photonic bandgap of 3D opal structures by utilizing polymer and silica hybrid colloids." In Digest of Papers Microprocesses and Nanotechnology 2005. 2005 International Microprocesses and Nanotechnology Conference. IEEE, 2005. http://dx.doi.org/10.1109/imnc.2005.203746.

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Ravndal, Kristin T., and Roald Kommedal. "Modelling particle degradation and intermediate dynamics in a dispersed activated sludge microcosm." In 63rd International Conference of Scandinavian Simulation Society, SIMS 2022, Trondheim, Norway, September 20-21, 2022. Linköping University Electronic Press, 2022. http://dx.doi.org/10.3384/ecp192002.

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Municipal wastewater consists of a large fraction of particulate organic matter. During biological wastewater treatment these particles undergo extracellular depolymerisation before products are taken up by bacteria (MW < 0.6 kDa). Particle degradation and intermediate formation dynamics is important in process analysis of wastewater treatment as the transport regime differ. This work aims to develop a model for particle degradation that includes intermediate dynamics as observed in experimental work. A model for particle degradation including intermediate dynamics, bacterial growth and end

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Shaunik, Shruti, Ting-Yun Hsiao, Cheng-You Hong, and Tzu-Chien Wei. "The use of polymer rich colloids to enable high adhesion electroless copper plating on FR4 substrates." In 2017 12th International Microsystems, Packaging, Assembly and Circuits Technology Conference (IMPACT). IEEE, 2017. http://dx.doi.org/10.1109/impact.2017.8255957.

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Wu, Hua, Alessio Zaccone, Marco Lattuada, Massimo Morbidelli, Albert Co, Gary L. Leal, Ralph H. Colby, and A. Jeffrey Giacomin. "Rheological Properties and Structure of Gels Generated from Stable Polymer Colloids through High Shear in a MicroChannel." In THE XV INTERNATIONAL CONGRESS ON RHEOLOGY: The Society of Rheology 80th Annual Meeting. AIP, 2008. http://dx.doi.org/10.1063/1.2964453.

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Denton, Mark S., and William D. Bostick. "New Innovative Electrocoagulation (EC) Treatment Technology for BWR Colloidal Iron Utilizing the Seeding and Filtration Electronically (SAFE™) System." In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7186.

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The presence of iron (iron oxide from carbon steel piping) buildup in Boiling Water Reactor (BWR) circuits and wastewaters is decades old. In, perhaps the last decade, the advent of precoatless filters for condensate blow down has compounded this problem due to the lack of a solid substrate (e.g., powdex resin pre-coat) to help drop the iron out of solution. The presence and buildup of this iron in condensate phase separators (CPS) further confounds the problem when the tank is decanted back to the plant. Iron carryover here is unavoidable without further treatment steps. The form of iron in t

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Talmon, Arno, and Ebi Meshkati. "Houska Based Time-Dependent Rheological Model for Flocculated Tailings." In The 20th International Conference on Transport and Sedimentation of Solid Particles. Wydawnictwo Uniwersytetu Przyrodniczego we Wrocławiu (WUELS Publishing House)), 2023. http://dx.doi.org/10.30825/4.14-15.2023.

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The rheology of tailings depends on composition and is shear- and time-dependent. Time-dependency might be at the origin of phenomenona such as channel and pattern formation in tailings beaching. Rheology is governed by colloids that form a structure within the fluid. This paper concerns the fitting of the Houska rheological model to controlled stress rheometry data of polymer treated material. The Houska model describes reversible time-dependency, e.g., thixotropy. A novelty here is that irreversible shear down (rheomalaxis) is added to the thixotropy originally captured by the model. The Hou

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Rapports d'organisations sur le sujet "Polymer colloids"

Sherburne, Michael, Sergei Ivanov, Shruti Gharde, Gema Alas, Arjun Senthil, Dominic Bosomtwi, Nathan Withers, et al. SPECTRAL AND TEMPORAL RESPONSE OF UV-PUMPED COLLOIDAL QUANTUM DOTS IN POLYMER, THIN-FILM, AND ADDITIVELY-MANUFACTURED STRUCTURES. Office of Scientific and Technical Information (OSTI), December 2021. http://dx.doi.org/10.2172/1836971.

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Wicker, Louise, Ilan Shomer, and Uzi Merin. Membrane Processing of Citrus Extracts: Effects on Pectinesterase Activity and Cloud Stability. United States Department of Agriculture, October 1993. http://dx.doi.org/10.32747/1993.7568754.bard.

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The U.S. team studied the role of cations and pH on thermolabile (TL-PE) and thermostable (TS-PE), permeation in ultrafiltration (UF) membranes, affinity to ion exchange membranes, mechanism of cation and pH activation, and effect on PE stability. An optimum pH and cation concentration exists for activity and UF permeation, which is specific for each cation type. Incomplete release of PE from a pectin complex resulted in low PE binding to cationic and anionic membranes. Incubation of PE at low pH increases the surface hydrophobicity, especially TL-PE, but the secondary structure of TL-PE is no

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