Relevant bibliographies by topics / Complexes polymère

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Complexes polymère'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Complexes polymère"

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Moulay, Saad. "Molecular iodine/polymer complexes." Journal of Polymer Engineering 33, no. 5 (August 1, 2013): 389–443. http://dx.doi.org/10.1515/polyeng-2012-0122.

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Abstract A unique feature of molecular iodine by far, is its ability to bind to polymeric materials. A plethora of natural and synthetic polymers develop complexes when treated with molecular iodine, or with a mixture of molecular iodine and potassium iodide. Many unexpected findings have been encountered upon complexation of iodine and the polymer skeleton, including the color formation, the polymer morphology changes, the complexation sites or regions, the biological activity, and the electrical conductivity enhancement of the complexes, with polyiodides (In¯), mainly I3¯ and I5¯, as the actual binding species. Natural polymers that afford such complexes with iodine species are starch (amylose and amylopectin), chitosan, glycogen, silk, wool, albumin, cellulose, xylan, and natural rubber; iodine-starch being the oldest iodine-natural polymer complex. By contrast, numerous synthetic polymers are prone to make complexes, including poly(vinyl alcohol) (PVA), poly(vinyl pyrrolidone) (PVP), nylons, poly(Schiff base)s, polyaniline, unsaturated polyhydrocarbons (carbon nanotubes, fullerenes C60/C70, polyacetylene; iodine-PVA being the oldest iodine-synthetic polymer complex.
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Bensacia, Nabila, Saâd Moulay, François Garin, Ioana Fechete, and Anne Boos. "Effect of Grafted Hydroquinone on the Acid-Base Properties of Poly(acrylic acid) in the Presence of Copper (II)." Journal of Chemistry 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/913987.

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Potentiometric titration of poly(acrylic acid) and hydroquinone-functionalized poly(acrylic acid) was conducted in the presence of copper (II). The effects of hydroquinone functionalizing and copper (II) complexing on the potentiometric titration of poly(acrylic acid) were studied in an ionic environment and in its absence. Henderson-Hasselbalch equation was applied to assess its validity for this titration. Coordination number and the stability constants of the copper- (II-)complexed polymers were determined, and results showed the formation of mostly monodentate and bidentate copper- (II-)polymer complexes.
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Bosch, Paula, Desislava Staneva, Evgenia Vasileva-Tonkova, Petar Grozdanov, Ivanka Nikolova, Rositsa Kukeva, Radostina Stoyanova, and Ivo Grabchev. "Hyperbranched Polymers Modified with Dansyl Units and Their Cu(II) Complexes. Bioactivity Studies." Materials 13, no. 20 (October 14, 2020): 4574. http://dx.doi.org/10.3390/ma13204574.

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Two new copper complexes of hyperbranched polymers modified with dansyl units were synthesized and characterized by infrared spectroscopy (IR) and electron paramagnetic resonance (EPR) techniques. It was found that copper ions coordinate predominantly with nitrogen or oxygen atoms of the polymer molecule. The place of the formation of complexes and the number of copper ions involved depend on the chemical structure of the polymer. The antimicrobial activity of the new polymers and their Cu(II) complexes was tested against Gram-negative and Gram-positive bacterial and fungal strains. Copper complexes were found to have activity better than that of the corresponding ligands. The deposition of the modified branched polymers onto cotton fabrics prevents the formation of bacterial biofilms, which indicates that the studied polymers can find application in antibacterial textiles.
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Kim, Ki-Seok, Sandipan Dutta, and YongSeok Jho. "Entangled polymer complexes as Higgs phenomena." Soft Matter 11, no. 40 (2015): 7932–41. http://dx.doi.org/10.1039/c5sm01763g.

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Entangled polymers are analogous to Higgs phenomena. The preserved linking number of the entangled polymer restricts the transverse motion of the test polymer, which corresponds to the microscopic picture of the tube model.
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Shtompel, V. I., V. L. Demchenko, V. O. Ovsyankina, A. V. Nischimenko, and S. V. Riabov. "Structure and properties of polyelectrolyte complexes of various type (chitosan chloride – polyacrilic acid) and triple polyelectrolyte-metalic complexe with cations Cu2+." Polymer journal 42, no. 4 (December 10, 2020): 277–82. http://dx.doi.org/10.15407/polymerj.42.04.277.

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Using FT-IR-spectroscopy, X-ray diffraction and thermomechanical analysis structure and thermomechanical properties of two nonstoichiometry and one stoichiometry polyelectrolyte complexes (PEC) based on opposite charged polyelectrolytes – strong cationic polyelectrolyte (chitosan chloride) and weak anionic polyelectrolyte (polyacrylic aсid) and triple polyelectrolyte-metal complexes (TPMC) based on stoichometry polyelectrolyte complexes and cations Cu(II) were investigated. It was shown, that chitosan chloride has amorphous-cristallinity structure, which is significantly different from the structure of neat chitosan, and polyacrylic acid posses amorphous structure. Meantime, all PEC samples have amorphous structure, differing from the structure of weak anionic polyelectrolyte, at the same time amorphous structure of nonstoichiometric PECs insignificantly different from that of stoichiometric polyelectrolyte complexes. Additionally, amorphous structure of TPMC has another structure, compared to all PEC. According to thermomechanical analysis, all PECs have one temperature transition from glassy to highly elastic state (from 77 to 84 °C). The deformation value of the samples of nonstoichiometric PEC is similar and somewhat less than the deformation of the stoichiometric PEC. The TPMC sample has two glass transitions (81 and 226 °C), and his high-temperature transition characterizes the segmental mobility of fragments of macromolecules of one stoichiometric PEC, the polar groups of which form chelate circles with Cu (II) cations. Deformation parameter of the TPMC is higher in comparison with the stoichiometric polyelectrolyte complexes. Keywords: structure, properties, deformation, ionic force, cationic Cu(II), polyelectrolyte, polyelectrolyte-metal complexes, chitosan chloride, polyacrylic acid, X-ray diffraction, thermomechanical analysis.
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Wang, Yu, Kenichi Oyaizu, and Hiroyuki Nishide. "Allylic hydrocarbon polymers complexed with Fe(II)(salen) as a ultrahigh oxygen-scavenging and active packaging film." Pure and Applied Chemistry 92, no. 6 (June 25, 2020): 871–82. http://dx.doi.org/10.1515/pac-2020-0102.

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AbstractMacromolecular metal complexes provide a molecular-based synergy function of organic polymers and combined metal complexes. A new category of macromolecular complexes includes catalytically active metal complexes immobilized by organic polymers containing reactive substrate moieties in their repeating units. Here, we describe the extremely efficient oxidation of allylic hydrocarbon polymers with the attached iron complex catalyst, as well as the efficient oxygen-consumption or oxygen-scavenging function of the matrix polymer film. The less toxic N,N´-di(salicylaldehyde)ethylenediiminatoiron(II) complex was combined with or fixed onto a series of allylic hydrocarbon polymers as both the oxidative substrate and the film matrix, i.e. poly(1,2-butadiene), polynorbornene, poly(5-vinyl-2-norbornene), poly(2,5-norboenadiene), poly(dicyclopentadiene), and poly(5-ethylidene-2-norbornene). Ultra-high oxygen-scavenging capacity up to 300 mL (oxygen gas at STP)/g(film) was achieved, based on the oxidative consumption of the allylic bond (particularly of poly(5-ethylidene-2-norbornene)), which was more than three times that of the previously reported highest oxygen-scavenging polymers. These oxygen-scavenging films are based on the high reactivity of polymer-metal complexes that provides an innovative development in the area of active packaging polymer films that facilitate cost-effective performance, safety, and sustainability.
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YAMASHITA, O., H. YOKOCHI, H. IMANISHI, and K. KANAYAMA. "PMC-01: Making a Complex Three-dimensional Shape from Bamboo(PMC-I: POLYMERS AND POLYMER MATRIX COMPOSITES)." Proceedings of the JSME Materials and Processing Conference (M&P) 2005 (2005): 1. http://dx.doi.org/10.1299/jsmeintmp.2005.1_3.

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Savitskaya, Tatsiana, Tatsiana Shybaila, and Yaheni Varanec. "POLYMER CHEMISTRY: INTERPOLYELECTROLYTE COMPLEXES ON THE BASE OF CHITIN AND CELLULOSE DERIVATIVES ARE SPECIAL CLASS OF POLYMER SUBSTANCES." GAMTAMOKSLINIS UGDYMAS / NATURAL SCIENCE EDUCATION 5, no. 3 (December 1, 2008): 50–57. http://dx.doi.org/10.48127/gu-nse/08.5.50b.

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The great importance of polymers in modern life has been shown. The paradoxicalness of the insufficient attention to polymer chemistry at school has been marked. The main difference between the composition and properties of low molecular compounds and polymer has been formulated. The results of the research of new polymers chemistry products – interpolyelectrolyte complexes of chitosan and cellulose water soluble derivative structure and properties have been presented. The use of interpolyelectrolyte complexes in the adsorption-flocculation water treatment process and as the enterosorbent veterinary preparation has been described. Keywords: polymers, chitosan, cellulose sulphate acetate.
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Hill, Christopher, Wasiu Abdullahi, Robert Dalgliesh, Martin Crossman, and Peter Charles Griffiths. "Charge Modification as a Mechanism for Tunable Properties in Polymer–Surfactant Complexes." Polymers 13, no. 16 (August 20, 2021): 2800. http://dx.doi.org/10.3390/polym13162800.

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Oppositely charged polymer–surfactant complexes are frequently explored as a function of phase space defined by the charge ratio Z, (where Z = [+polymer]/[−surfactant]), commonly accessed through the surfactant concentration. Tuning the phase behaviour and related properties of these complexes is an important tool for optimising commercial formulations; hence, understanding the relationship between Z and bulk properties is pertinent. Here, within a homologous series of cationic hydroxyethyl cellulose (cat-HEC) polymers with minor perturbations in the degree of side chain charge modification, phase space is instead explored through [+polymer] at fixed Cpolymer. The nanostructures were characterised by small-angle neutron scattering (SANS) in D2O solutions and in combination with the oppositely charged surfactant sodium dodecylsulfate (h- or d-SDS). Scattering consistent with thin rods with an average radius of ∼7.7 Å and length of ∼85 Å was observed for all cat-HEC polymers and no significant interactions were shown between the neutral HEC polymer and SDS (CSDS < CMC). For the charge-modified polymers, interactions with SDS were evident and the radius of the formed complexes grew up to ∼15 Å with increasing Z. This study demonstrates a novel approach in which the Z phase space of oppositely charged polymer–surfactant complexes can be controlled at fixed concentrations.
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Wei, Zhao, Yuehua Hu, Haisheng Han, Wei Sun, Ruolin Wang, Wenjuan Sun, Jianjun Wang, et al. "Selective Separation of Scheelite from Calcite by Self-Assembly of H2SiO3 Polymer Using Al3+ in Pb-BHA Flotation." Minerals 9, no. 1 (January 13, 2019): 43. http://dx.doi.org/10.3390/min9010043.

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The flotation separation of scheelite from calcite is problematic, where sodium silicate modified by polyvalent metal ions has shown some advantages for selective depression. In this study, an Al-Na2SiO3 polymer was used as the depressant for the flotation separation of scheelite from calcite using a lead complex of benzohydroxamic acid (Pb-BHA) as the collector. Furthermore, a number of measurements were conducted to investigate the structure of the Al-Na2SiO3 polymer and its adsorption behavior with Pb-BHA complexes on the mineral surface. Flotation experiments indicated that the Al-Na2SiO3 polymer shows good selectivity for the flotation separation of scheelite from calcite at pH 8, where the optimum ratio of sodium silicate to aluminum sulfate was 2:1. Fourier-Transform Infrared (FTIR) and solution chemical analyses revealed that aluminum hydroxide complexes and the hydroxy moiety of silicic acid are able to self-assemble via condensation affording an Al-Na2SiO3 polymer, i.e., a composite aluminosilicate polymer. The zeta potential measurements and adsorption capacity measurements indicated that, upon adsorption of the Al-Na2SiO3 polymer and Pb-BHA complexes on the mineral surface, the Al-Na2SiO3 polymer had less influence on the adsorption of Pb-BHA complexes on the scheelite surface, while the opposite was true for calcite. Therefore, more Pb-BHA complexes and fewer Al-Na2SiO3 polymers were deposited on the scheelite surface, while fewer Pb-BHA complexes and more Al-Na2SiO3 polymers were adsorbed on the calcite surface. The selective separation of scheelite from calcite was attributed to the cooperative selectivity of the Pb-BHA complexes and Al-Na2SiO3 polymer.
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Dissertations / Theses on the topic "Complexes polymère"

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Defendini, Francis. "Complexes polymère-acide à conduction ionique : synthèse et caractérisation." Grenoble INPG, 1987. http://www.theses.fr/1987INPG0112.

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Complexe poe-h::(3)po::(4). L'etablissement d'un diagramme de phase montre que le maximum de conductivite observe peut etre associe a une composition eutectique. Domaine de stabilite redox de deux volts
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Terrier, Péran. "Caractérisation de polymères et étude de complexes non covalents ADN-polymère par spectrométrie de masse." Evry-Val d'Essonne, 2006. http://www.theses.fr/2006EVRY0042.

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Ce travail de thèse s'organise en deux parties, l'une portant sur la caractérisation de polymères, l'autre sur l'étude de complexes non covalents ADN-polymère par spectrométrie de masse. Les polymères en question font actuellement l'objet de recherches dans le domaine de la vectorisation en thérapie génique. La première partie est consacrée à l'analyse de copolymères à blocs d'oxyde d'éthylène et d'oxyde de propylène. La détermination de leur composition globale (nombre de motifs de répétition) et la détection de sous-produits ont été réalisées grâce à la technique MALDI-MS. L'influence des paramètres expérimentaux liés à l'analyse a été explorée. La caractérisation de la séquence des polymères (organisation des motifs de répétition au sein des chaînes) a été effectuée grâce à la technique Electrospray-MS/MS. La seconde partie concerne l'étude de complexes non covalents impliquant l'ADN et des polymères cationiques (peptides basiques, polyamines). Ces complexes ont pu être obtenus en phase gazeuse grâce aux méthodes d'ionisation Electrospray et MALDI. Dans les deux cas, la pertinence des ions détectés en mode d'analyse MS a été discutée, et les interactions maintenant ces complexes ont été sondées grâce au mode MS/MS
This PhD work is composed of two parts, dealing with the characterisation of polymers and the study of DNA-polymer non-covalent complexes using mass spectrometry. The polymers under study are presently tested as gene therapy vectors. The first part is dedicated to the analysis of poly(oxyethylene) and poly(oxypropylene) block copolymers. The determination of their global composition (number of repeat units) and the detection of by-products was achieved using MALDI-MS. The influence of experimental parameters was investigated. The characterisation of the polymer sequences (order of the repeat units within the chains) was achieved thanks to Electrospray-MS/MS. The second part deals with the study of non-covalent complexes involving DNA and cationic polymers (basic peptides, polyamines). We managed to obtain these complexes in the gas phase using Electrospray and MALDI ionizations. In both cases, the relevance of the detected ions in MS mode was discussed, and interactions involved in the complexes were probed by MS/MS mode
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Saghbini, Samar. "Étude photophysique de la cinétique de formation de complexes." Vandoeuvre-les-Nancy, INPL, 1994. http://www.theses.fr/1994INPL032N.

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La cinétique de formation de complexes électroniquement excités a été examinée dans les cas suivants : excimères intermoléculaires, exciplexes intermoléculaires et excimères intramoléculaires. Dans la première partie, le processus de formation de complexes intermoléculaires est étudié dans des milieux de viscosités différentes. Deux modèles cinétiques sont confrontés dans l'analyse des déclins de fluorescence : modèle de Birks ou les effets transitoires sont négligés et un modèle plus sophistiqué mis en place a partir d'équations de transport moléculaire brownien, de la connaissance de constantes chimiques réactionnelles et du principe de superposition. On constate que le modèle simple de Birks reste valable, dans les limites expérimentales, même dans des milieux où les effets transitoires sont importants. Dans la deuxième partie, l'étude de la cinétique de cyclisation de chaines de polystyrènes sous l'effet de la pression et de la température (dans une paraffine) par l'intermédiaire de la formation d'excimères de pyrène intramoléculaire greffé à chaque extrémité de la chaine a été abordée. Trois solvants sont utilisés : le toluène (bon solvant), le methylcyclohexane (mauvais solvant) et le cyclopentane (solvant). Cette étude permet d'élucider comment les deux facteurs : changement de la viscosité du solvant et altération des propriétés thermodynamiques du système polystyrène/solvant, induits par l'augmentation de la pression ou de la température, peuvent affecter la cyclisation de la chaine dans les différents solvants
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Caix, Chrystelle. "Propriétés électrochimiques des complexes du type ((eta5-Me5C5)M(L)Cl)+ (M=Ir(III), Rh(III)) en solution et immobilisés dans des films de polymère : application à l'électrocatalyse." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10154.

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Ce memoire est consacre a l'evaluation des possibilites offertes par les complexes de coordination de rhodium (iii) et d'iridium (iii) du type (#5-me#5c#5)m(l)x#+ en electrocatalyse. Nous nous sommes plus particulierement interesses a leur application (en phase homogene ou immobilises a la surface d'une electrode sous forme de films polypyrroliques) a l'electroreduction catalytique des protons en hydrogene moleculaire, a l'hydrogenation electrocatalytique de substrats organiques insatures, et a la reduction electrocatalytique du dioxyde de carbone. Une partie de ce travail a consiste a etudier en detail les proprietes electrochimiques des complexes chlorure d'iridium et de rhodium du type (#5-me#5c#5)m(l)cl#+ et a determiner les conditions permettant d'electrogenerer quantitativement les complexes hydrure correspondants, intermediaires proposes dans de nombreux processus catalytiques. Une etude similaire a ete conduite sur des electrodes modifiees par electropolymerisation de ces complexes, et de nouveaux materiaux moleculaires d'electrodes contenant les complexes hydrure ont ainsi ete realises. Ces complexes hydrure ont ete caracterises, en particulier pour l'iridium, par differentes methodes spectroscopiques, aussi bien en solution que sur electrodes modifiees. Enfin ces complexes et plus specialement ceux du rhodium se sont averes etre de bons catalyseurs pour l'electroreduction des protons appliquee ou non a l'hydrogenation de substrats organiques insatures et a l'electrocatalyse de la reduction du co#2 en ions formiate en milieu hydroorganique. Nous avons montre par ailleurs que, pour ces deux dernieres applications, l'immobilisation du complexe dans un film de polymere defavorise la reaction d'insertion du substrat ou du co#2 dans la liaison metal-hydrure au profit de la reduction des protons
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Kéroack, Daniel. "Étude de l'orientation et de la cristallisation dans les systèmes complexes de polymère." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0003/MQ40594.pdf.

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Bellini, Clément. "Complexes de baryum et autres métaux divalents du bloc principal pour la catalyse homogène de couplages déshydrogénants." Thesis, Rennes 1, 2016. http://www.theses.fr/2016REN1S057/document.

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Les complexes organométalliques de métaux alcalino-terreux lourds (Ca, Sr, Ba), ont émergé ces deux dernières décennies en tant que précatalyseurs efficaces, biocompatibles et disponibles à bas coûts pour des réactions d'hydroélémention d'oléfine ou de polymérisation de cycloesters. Cette thèse décrit la synthèse de complexes de métaux du groupe 2 (Ca, Sr, Ba) et leur utilisation en catalyse de couplage déshydrogénant N-H/H-Si. Le précatalyseur Ba[CH(SiMe3)2]2(THF)3 s'est montré le plus efficace pour le couplage d'amines avec des hydrosilanes, présentant une activité catalytique parmi les plus élevées à ce jour (TOF jusqu' 3600 h-1 ; TON jusqu'à 396). La combinaison de résultats théoriques (calculs DFT en collaboration avec le Dr. Sven Tobisch) et expérimentaux ont permis de comprendre les mécanismes opératoires de ces réactions. Le développement de procédés de synthèse pour la production d'oligo- ou polysilazanes a été mené par l'intermédiaire de ces couplages déshydrogénants. Des structures macromoléculaires linéaires ou cycliques de type polycarbosilazane, présentant de nombreuses applications en chimie des matériaux, ont notamment été synthétisées par polycondensation catalysée par Ba[CH(SiMe3)2]2(THF)3. Dans un dernier temps, la synthèse de complexes innovants de métaux des groupes 12 (Zn, Cd, Hg) et 14 (Pb) a été effectuée en collaboration avec l'équipe du Pr. Silvestru de l'université de Babeş-Bolyai (Cluj-Napoca, Roumanie)
In the past two decades, heavier alkaline-earth (Ca, Sr, Ba) complexes have emerged as highly efficient and biocompatible precatalyst for hydroelementation or polymerisation reactions. This PhD thesis describes the synthesis and characterisation of heavier alkaline-earth complexes and their applications as precatalyst for cross-dehydrocoupling of hydrosilanes and amines. The homoleptic precatalyst Ba[CH(SiMe₃)₂]₂(THF)3 displayed high catalytic activity (TOF up to 3600 h⁻¹ ; TON up to 396), with excellent chemoselectivity in reaction of (di)amines with (di)hydrosilanes. Combination of experimental and DFT investigations (collaboration with Dr. Sven Tobisch) revealed the reactions proceed by nucleophilic attack of a metal amide at the incoming silane and subsequent turnover-limiting hydrogen transfer to the metal center. Development of synthesis of oligo- and polysilazanes was performed using our best barium precatalysts. Cyclic or linear polycarbosilazanes (Mw up to 10 000 g.mol⁻¹) were also produced by fast and controlled barium-catalyzed N-H/H-Si polycondensation. In a collaboration with Prof. Silvestru from Babeş-Bolyai University (Cluj-Napoca, Roumanie), synthesis of interesting zinc, cadmium, mercury and lead complexes were achieved in complement of this work
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Guesmi, Ismaël. "Dépôt de couches minces de cuivre sur substrats polymères de forme complexes par pulvérisation cathodique magnétron avec ionisation de la vapeur." Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00703850.

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De nombreuses applications industrielles nécessitent le dépôt de films métalliques à la surface de polymères afin de conférer une fonction de conduction électrique à ces matériaux isolants. Cette étude a été motivée par la volonté de la société Radiall, dont une partie de l'activité concerne la réalisation de connecteurs à haute performance, de remplacer le procédé de métallisation par voie humide par un procédé de dépôt par voie sèche plasma. Le travail présenté ici porte ainsi sur l'étude du procédé de pulvérisation cathodique magnétron avec ionisation de la vapeur par plasma radiofréquence (RF-IPVD) pour le dépôt de couches minces de cuivre sur substrats de formes complexes en poly-sulfure de phénylène. Cette thèse regroupe d'une part les résultats concernant la métallisation des connecteurs et d'autre part l'analyse de la phase plasma. La validation du procédé RF-IPVD a comporté plusieurs étapes : i) le développement du traitement du polymère par plasma ICP avant dépôt du film de cuivre afin que l'adhérence satisfasse la norme ISO 2409. ii) la détermination des paramètres d'élaboration permettant d'optimiser la conductivité des films et leur conformité sur les substrats 3D. Ces travaux se sont concrétisés par la définition d'un réacteur pilote dans l'optique de réaliser la transposition à l'échelle industrielle du procédé RF-IPVD. Plusieurs études à caractère fondamental ont également été menées afin, d'une part, de comprendre les mécanismes régissant l'adhérence (analyses XPS) et ceux régissant la résistivité (analyses DRX). D'autre part, l'utilisation de divers diagnostics de la phase plasma ont été employés afin de comprendre les mécanismes de transfert d'énergie prenant place dans le milieu gazeux et responsables des propriétés des dépôts.
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Aliprandi, Alessandro. "Platinum complexes and their luminescent assemblies." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAF041/document.

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Cette thèse porte sur la synthèse et la caractérisation photophysique d'une série de composés neutres luminescents de platine (II) contenant un ligand tridentate dianionique chromophore N-donneur et un ligand auxiliaire monodentate. Les composés montrent un changement notable des propriétés de photoluminescence selon l'auto-assemblage en raison de la formation d'interactions intermoléculaires non covalentes faibles telles que metal-metal et π-π. Nous avons démontré comment les complexes de Pt (II) peuvent être auto-assemblés d'une manière contrôlée et précise en jouant sur les facteurs cinétiques et thermodynamiques, ainsi que la morphologie des différents ensembles étudiés. Ces approches ont conduit à des matériaux avec des propriétés améliorées et uniques tels que le mécano-chromisme, ainsi que l'absorption et l'émission de la lumière polarisée. Les composés étudiés et leurs assemblages sont utiles non seulement pour le développement de nouveaux matériaux fonctionnels supramoléculaires en équilibre et hors- équilibre, mais aussi pour des applications en bio-imagerie
This thesis focuses on the synthesis and the photophysical characterization of a series of luminescent neutral Pt(II) compounds containing a tridentate dianionic N-donor chromophoric ligand and a monodentate ancillary moiety. The compounds exhibited notable change of the photoluminescence properties upon self-assembly due to the establishment of weak non-covalent intermolecular interactions – metal-metal and π-π. We demonstrated how Pt(II) complexes can be self-assembled in a controlled and precise manner by playing with kinetic and thermodynamic factors and the morphology of the different assemblies investigated. Such approaches led to materials with enhanced and unique properties such as mechanochromism and polarized light absorption and emission. The investigated compounds and their assemblies were useful for the development of novel functional supramolecular materials in and out of the equilibrium as well as for bioimaging application
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Galant, Céline. "Nouveaux complexes polyélectrolytes impliquant un polymère de ß-cyclodextrine, un tensioactif cationique et un polyanion." Paris 12, 2003. https://athena.u-pec.fr/primo-explore/search?query=any,exact,990002111230204611&vid=upec.

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Un nouveau modèle de complexe polyélectrolyte a été élaboré, basé d’une part sur des complexes d’inclusion entre un polymère neutre de β-CD et un tensioactif cationique (DTAC) et, d’autre part, sur des complexes par charges opposées entre le DTAC et un polyanion. Des interactions d’inclusion entre le poly(β-CD) et le DTAC seuls en solution ont tout d’abord été mises en évidence et évaluées au moyen de plusieurs techniques incluant des mesures conductimétriques et fluorimétriques et des mesures de tension de surface. La structure des agrégats résultants a été étudiée par viscosimétrie et par SANS en fonction de la force ionique et de la stoechiométrie du mélange. La formation de complexes ternaires solubles dans l’eau a ensuite été prouvée lors de l’addition d’un polyanion au mélange poly(β- CD)/DTAC. Pour trois polyanions de natures et d’architectures différentes (NaPSS, NaDxS et ADN), les propriétés structurales des complexes ont été analysées par SANS, par viscosimétrie et par DLS en fonction de la concentration en DTAC. La stabilité et la réversibilité des complexes ont également été étudiées en faisant varier la force ionique du milieu et la concentration en compétiteurs
A new model of polyelectrolyte compiex has been elaborated, based on inclusion complexes between a neutral polyrner of β -CD and a cationic surfactant (DTAC). And complexes of opposite charges between DTAC and a polyanion. Inclusion interactions between poly(β-CD) and DTAC alone in solution have first been characterized with several techniques including conductimetric and fluorimetric measurements and surface tension measurements. Structure of the resulting aggregates has been studied by viscosimetry and SANS as a function of the ionic strength and stoechiometry of the mixture. Then, the addition of a polyanion to the poly(β-CD)/DTAC mixture has been shown to form water soluble ternary complexes. For three polyanions of different natures and architectures NaPSS, NaDxS and DNA), the structural properties of the complexes have been analyzed by SANS, viscosimetry and DLS as a function of the DTAC concentration. Stability and reversibility of the complexes have also been studied by varying the ionic strength of the medium and the concentration in competitors
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Moine, Laurence. "Complexes d'inclusion entre un polyélectrolyte dégradable portant des groupes adamantane et un polymère de β-cyclodextrine." Paris 12, 1998. http://www.theses.fr/1998PA120031.

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Un nouveau systeme associatif a ete synthetise a partir du melange de deux polymeres en milieu aqueux : - un copolyester amphiphile derive du poly(acide -malique) contenant une faible proportion de groupes adamantane (substituant hydrophobe possedant une forte constante d'association avec le -cyclodextrine), -un copolymere de -cyclodextrine hydrosoluble obtenu par polycondensation en presence d'epichlorhydrine. La synthese des copolyesters degradables amphiphiles derives du poly(acide -malique), polymere reconnu comme degradable par simple hydrolyse des fonctions esters de la chaine principale, a constitue la premiere etape de cette etude. Ces copolyesters, les poly(acide -malique-co--malate d'adamantyle), ont ete prepares par copolymerisation anionique par ouverture de cycle de deux -lactones--substituees : le malolactonate de benzyle (qui va donner la partie hydrophile du polymere apres deprotection des fonctions benzyliques) et le malolactonate d'adamantyle (partie hydrophobe). Il est important de noter que, malgre l'encombrement sterique du groupe adamantane, le malolactonate d'adamantyle a pu etre, d'une part synthetise et d'autre part polymerise. La formation de complexes d'inclusion entre les groupes adamantane des copolyesters et les cavites du polymere de -cyclodextrine est a l'origine de la compatibilite et de l'association de ces deux copolymeres. De part le caractere polyelectrolyte du poly(acide -malique), les proprietes rheologiques resultantes de cette association dependent fortement du ph : a ph acide(<3), aucune association n'est observee independemment de la concentration, alors qu'une faible augmentation de ph(4) suffit pour accroitre considerablement la viscosite du milieu. Les etudes effectuees en diffusion de la lumiere montrent la formation d'agregats dont les tailles dependent des conditions de ph et de concentration confirmant les etudes viscosimetriques.
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Books on the topic "Complexes polymère"

1

Pomogaĭlo, A. D. Catalysis by polymer-immobilized metal complexes. Amsterdam, The Netherlands: Gordon and Breach Science Publishers, 1998.

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Theng, B. K. G. Formation and properties of clay-polymer complexes. 2nd ed. Amsterdam: Elsevier, 2012.

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Polymer-solvent molecular compounds. Amsterdam: Elsevier, 2008.

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Mwakibete, Hezron Kapaga Ozanne. Electrochemical and isothermal titration calorimetry studies associated with polymer-micelle complexes and surfactant/cyclodextrin inclusion complexes. Salford: University of Salford, 1994.

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Dawha, Joseph Thlama. Dielectric and kerr effect studies of electro-active polymer complexes. Birmingham: University of Aston.Department of Chemistry, 1985.

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Photophysics and photochemistry of metal-containing polymers. Hoboken, N.J: Wiley-Blackwell, 2010.

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A, Kabanov V., ed. Polimernye immobilizovannye metallokompleksnye katalizatory. Moskva: "Nauka", 1988.

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Kataliz immobilizovannymi kompleksami. Moskva: "Nauka", 1991.

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International, Conference on Polymer-Solvent Complexes and Intercalates (1st 1996 Meyrueis (Lozère) France). Europhysics Conference on Macromolecular Physics: Polymer-solvent complexes and intercalates : July 1-5, 1966 in Meyrueis (Lozère),France. Zug: Huthig & Wepf, 1997.

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A, Pincus P., ed. Structured fluids: Polymers, colloids, surfactants. Oxford: Oxford University Press, 2004.

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Book chapters on the topic "Complexes polymère"

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Li, Yingjie, and Paul L. Dubin. "Polymer—Surfactant Complexes." In ACS Symposium Series, 320–36. Washington, DC: American Chemical Society, 1994. http://dx.doi.org/10.1021/bk-1994-0578.ch023.

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Hirai, H., and N. Toshima. "Polymer-Attached Catalysts." In Catalysis by Metal Complexes, 87–140. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-5261-4_2.

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Arbe, Arantxa, and Juan Colmenero. "Complex polymers." In Dynamics of Soft Matter, 103–21. New York, NY: Springer US, 2011. http://dx.doi.org/10.1007/978-1-4614-0727-0_4.

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Harada, Akira, Akihito Hashidzume, and Masahiko Miyauchi. "Polymers Involving Cyclodextrin Moieties." In Cyclodextrins and Their Complexes, 65–92. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527608982.ch3.

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Schubert, Ulrich S., Andreas Winter, and George R. Newkome. "Polymers Incorporating Ru Complexes." In Ruthenium-Containing Polymers, 15–185. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75598-0_2.

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Tsuchida, Eishun, and Koji Abe. "Polyelectrolyte Complexes." In Developments in Ionic Polymers—2, 191–266. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4187-8_5.

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Sugimoto, Hiroshi, and Shohei Inoue. "Polymerization by Metalloporphyrin and Related Complexes." In Polymer Synthesis/Polymer-Polymer Complexation, 39–119. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/3-540-49424-3_2.

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Reedijk, Jan. "Polymer-Metal Complexes in Living Systems." In Macromolecule-Metal Complexes, 131–51. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-60986-2_3.

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Gooch, Jan W. "Complexes, Catalyst- Cocatalyst." In Encyclopedic Dictionary of Polymers, 160. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2734.

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Fenyvesi, É., L. Décsei, A. Ujházy, B. Zsadon, and J. Szejtli. "Complexes of Insoluble Cyclodextrin Polymers." In Proceedings of the Fourth International Symposium on Cyclodextrins, 227–35. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2637-0_35.

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Conference papers on the topic "Complexes polymère"

1

Akhilesan, S., Susy Varughese, and C. Lakshmana Rao. "Electromechanical Behavior of Conductive Polyaniline/Poly (Vinyl Alcohol) Blend Films Under Uniaxial Loading." In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-7937.

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Polyaniline (PANI) an electronically conducting polymer, and its charge transfer complexes are interesting engineering materials due to their unique electronic conductivity, electrochemical behavior, low raw material cost, ease of synthesis and environmental stability in comparison with other conjugated polymers. The main disadvantage of PANI is its limited processability. Blending of conducting polymers with insulating polymers is a good choice to overcome the processability problem. In this study a solution-blend method is adopted to prepare conductive polyaniline/polyvinyl alcohol (PANI/PVA) blend films at various blend ratios. Interest in applications for polyaniline (PANI) has motivated investigators to study its electro mechanical properties, and its use in polymer composites or blends with common polymers. The work described here looks at the uniaxial deformation behavior of the conducting polymer films and the anisotropic dependency of electrical conductivity of the blend films exposed to static and dynamic loading conditions. The relation between mechanical strain, electrical conductivity and film microstructure is investigated on PANI/PVA blend films.
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Pang, Yaoyu, Jie-Hua Zhao, and Darvin Edwards. "Effect of Viscoelasticity on Thermalmechanical Stress in Polymers." In ASME 2009 InterPACK Conference collocated with the ASME 2009 Summer Heat Transfer Conference and the ASME 2009 3rd International Conference on Energy Sustainability. ASMEDC, 2009. http://dx.doi.org/10.1115/interpack2009-89169.

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Polymers are being widely used in microelectronic packages and viscoelasticity is one of the important characteristics of polymers. In practice, most package stress studies arbitrarily neglect the polymer viscoelasticity and use elastic models although viscoelastic constitutive relation is different from commonly used elastic-plastic behavior due to the fact that the characterization of viscoelasticity is complex and time-consuming. With this in mind, special response of thermal-mismatch stress induced by temperature excursion within polymers are expected to be very different than the linear elastic response, and better knowledge for thermomechanical stress behavior in polymers needs to be developed. In this paper, a bi-material plate consisting of a polymer film on an elastic substrate was used to demonstrate the significance of polymer viscoelasticity. The constitutive relation for a linear viscoelastic thermorheologically simple material (TSM) was adopted for the polymer layer. The effect of polymer viscoelasticity on stress evolution under different temperature profiles has been investigated.
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Anderson, Benjamin J., Charles F. Zukoski, Michio Tokuyama, Irwin Oppenheim, and Hideya Nishiyama. "Colloidal Glass Formation in Polymer Nanocomposites." In COMPLEX SYSTEMS: 5th International Workshop on Complex Systems. AIP, 2008. http://dx.doi.org/10.1063/1.2897784.

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Tuinier, Remco, Jan K. G. Dhont, Takashi Taniguchi, Tai-Hsi Fan, Michio Tokuyama, Irwin Oppenheim, and Hideya Nishiyama. "Nanoparticle Retardation in Semidilute Polymer Solutions." In COMPLEX SYSTEMS: 5th International Workshop on Complex Systems. AIP, 2008. http://dx.doi.org/10.1063/1.2897807.

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Larson, Ronald G., Michio Tokuyama, Irwin Oppenheim, and Hideya Nishiyama. "Addressing Unsolved Mysteries of Polymer Viscoelasticity." In COMPLEX SYSTEMS: 5th International Workshop on Complex Systems. AIP, 2008. http://dx.doi.org/10.1063/1.2897832.

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Bistac, S., Marjorie Schmitt, and Achraf Ghorbal. "Sliding Friction of Polymers: The Complex Role of Interface." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63480.

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The objective of this work is to analyse the influence of interfacial properties on the sliding friction of polymers. In order to change the nature of interface, two types of smooth and rigid substrates are used: a hydrophilic silicon wafer (hydroxylated by a piranha treatment) and a hydrophobic silicon wafer, obtained by a chemical grafting with a CH3 terminated silane. Both substrates exhibit identical stiffness and roughness and differ only by their surface chemical composition. Two different polymers are studied: crosslinked polydimethylsiloxane, PDMS (soft elastomer with a low glass transition temperature) and polystyrene (rigid thermoplastic polymer with a high glass transition temperature). Friction experiments are performed with a translation tribometer for different normal forces and friction speeds.
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Wang, Michael R., Jianwen Yang, Xingzhong Yan, and Ralph DeMasi. "Holographic data storage using azobenzene polymer." In Complex Adaptive Structures, edited by William B. Spillman, Jr. SPIE, 2001. http://dx.doi.org/10.1117/12.446771.

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Richter, D., K. Niedzwiedz, M. Monkenbusch, A. Wischnewski, R. Biehl, B. Hoffmann, R. Merkel, Michio Tokuyama, Irwin Oppenheim, and Hideya Nishiyama. "Polymer Dynamics from Synthetic to Biological Macromolecules." In COMPLEX SYSTEMS: 5th International Workshop on Complex Systems. AIP, 2008. http://dx.doi.org/10.1063/1.2897833.

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Kweon, Soondo, and Ahmed Amine Benzerga. "Strain Localization in Determining the Constitutive Response of Polymers." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65147.

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The constitutive response of glassy polymers is characterized by their complex thermo-mechanical behavior such as strain rate and temperature sensitive yielding, softening at small strains and re-hardening at large strains. These complex behaviors trigger strain localization in the deformation of polymers. Since localization can be induced by both structural and material instabilities, careful analysis needs to be performed to investigate the localization behavior of polymer specimen testing. Localization such as neck formation and propagation that typically occurs in the tensile and compressive testing of polymers and plastics makes it difficult for experimentalists to extract their intrinsic constitutive response. This problem is exacerbated when localization occurs with shear bands. In this study, a macromolecular constitutive model for polymers showing small-strain softening and large-strain directional hardening is employed to investigate the effect of localization in tension onto the constitutive identification process. Considering the complex interplay between the structural and constitutive instabilities, a method based on direct, real-time measurement of area reduction at the neck section has been proposed to extract the intrinsic constitutive response of polymer materials.
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Lai, Pik-Yin. "Dynamics of Knotted Polymers." In SLOW DYNAMICS IN COMPLEX SYSTEMS: 3rd International Symposium on Slow Dynamics in Complex Systems. AIP, 2004. http://dx.doi.org/10.1063/1.1764144.

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Reports on the topic "Complexes polymère"

1

Wright, Michael E., and Edward G. Toplikar. New Ferrocene Complexes and Polymers for Nonlinear Optical Applications. Fort Belvoir, VA: Defense Technical Information Center, April 1991. http://dx.doi.org/10.21236/ada243640.

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Meyer, T. J., and J. M. Papanikolas. Excited State Processes in Transition Metal Complexes, Redox Splitting in Soluble Polymers. Office of Scientific and Technical Information (OSTI), August 2002. http://dx.doi.org/10.2172/830013.

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Meyer, T. J. Excited state processes in transition metal complexes: Redox splitting in soluble polymers. Office of Scientific and Technical Information (OSTI), March 1992. http://dx.doi.org/10.2172/5573491.

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Schmehl, Russell, and Igor Rubtsov. Transition Metal Complex/Polymer Systems as Optical Limiting Materials. Fort Belvoir, VA: Defense Technical Information Center, May 2013. http://dx.doi.org/10.21236/ada584374.

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Escobedo, Fernando A. CONFORMATIONAL PROPERTIES AND ENTROPIC PARTITIONING OF TOPOLOGICALLY COMPLEX POLYMERS UNDER CONFINEMENT - Final Report. Office of Scientific and Technical Information (OSTI), March 2005. http://dx.doi.org/10.2172/837989.

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Meyer, T. J. Excited state processes in transition metal complexes: Redox splitting in soluble polymers. Progress report, November 15, 1991--November 14, 1992. Office of Scientific and Technical Information (OSTI), March 1992. http://dx.doi.org/10.2172/10138892.

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Yang, Chia-Yu, and Gary E. Wnek. New Polymer Electrolyte Hosts and Their Tetrabutylammonium Chloride Complexes. Relationships Among Concentration of Polar Groups, ESR Spin Probe Response, and Ionic Conductivity. Fort Belvoir, VA: Defense Technical Information Center, June 1991. http://dx.doi.org/10.21236/ada240497.

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