Functionalization of Multi-Walled Carbon Nanotubes with Polymers / Tunckol, Meltem  

Public ISBD Titre : Functionalization of Multi-Walled Carbon Nanotubes with Polymers Type de document : texte imprimé Auteurs : Tunckol, Meltem, Auteur ; Philippe Serp, Directeur de thèse ; Durand, Jérôme, Directeur de thèse Année de publication : 2012 Langues : Anglais (eng) Tags : MULTI-WALLED CARBON NANOTUBES  IONIC LIQUID, POLYMERIZED IONIC LIQUID  POLYMER NANOCOMPOSITE  POLYETHERIMIDE  POLYAMIDE  EPOXY Résumé : "This thesis deals with the surface modification of multi-walled carbon nanotubes with polymers with the aim to achieve a high level of dispersion in polymer matrices. Chapter I gives a comprehensive review of the state of the art of hybrids of ionic liquids with carbon nanomaterials, particularly, nanotubes and more recently, graphene. Chapter II starts with a general overview of the non-covalent adsorption of polymers onto the CNT surfaces followed by a detailed description of the study carried out on the non-covalent functionalization of CNTs with various imidazolium based polymerized ionic liquids (PIL). For this purpose, we further compare the two experimental methods: in situ polymerization and solution mixing. One of the most important applications of CNT is in polymer/CNT composites. Chapter III describes the formation of polyetherimide/CNT composites starting from PIL-CNT hybrids obtained in Chapter II. The preparation and characterization of composites using solvent casting methods have been detailed. Pristine, acid oxidized and PIL functionalized CNTs have been compared. Mechanical, thermal and electrical property measurements on these composites have also been described. The last chapter – Chapter IV, divided into two sections, discusses the covalent functionalization of CNTs with a variety of polymers using two main approaches: “grafting from” and “grafting to”. Using the first approach we have grown polyamide (PA) chains from the surface of caprolactam grafted CNTs by anionic ring opening polymerization. The tensile properties of the PA based composites prepared therefrom containing pristine, amine- and PA-functionalized CNTs have been investigated. The radical polymerization of vinyl imidazolium based IL monomers attached to the activated CNT surface is also given in this section. In the second part of Chapter IV, we have reported several “grafting to” functionalization strategies including radical addition and “defect site” grafting used for the preparation of CNTs covalently attached with polymers intended to blend well with epoxy matrices." Document : Thèse de Doctorat Etablissement_delivrance : Institut National Polytechnique de Toulouse - INPT Date_soutenance : 18/07/2012 Ecole_doctorale : Sciences de la Matière (Toulouse) Domaine : Sciences de l'ingénieur [physics]/Matériaux/ chimie-chimie de coordination En ligne : https://theses.hal.science/search/index?q=Tunckol%2C+Meltem Functionalization of Multi-Walled Carbon Nanotubes with Polymers [texte imprimé] / Tunckol, Meltem, Auteur ; Philippe Serp, Directeur de thèse ; Durand, Jérôme, Directeur de thèse . - 2012. Langues : Anglais (eng) Tags : MULTI-WALLED CARBON NANOTUBES  IONIC LIQUID, POLYMERIZED IONIC LIQUID  POLYMER NANOCOMPOSITE  POLYETHERIMIDE  POLYAMIDE  EPOXY Résumé : "This thesis deals with the surface modification of multi-walled carbon nanotubes with polymers with the aim to achieve a high level of dispersion in polymer matrices. Chapter I gives a comprehensive review of the state of the art of hybrids of ionic liquids with carbon nanomaterials, particularly, nanotubes and more recently, graphene. Chapter II starts with a general overview of the non-covalent adsorption of polymers onto the CNT surfaces followed by a detailed description of the study carried out on the non-covalent functionalization of CNTs with various imidazolium based polymerized ionic liquids (PIL). For this purpose, we further compare the two experimental methods: in situ polymerization and solution mixing. One of the most important applications of CNT is in polymer/CNT composites. Chapter III describes the formation of polyetherimide/CNT composites starting from PIL-CNT hybrids obtained in Chapter II. The preparation and characterization of composites using solvent casting methods have been detailed. Pristine, acid oxidized and PIL functionalized CNTs have been compared. Mechanical, thermal and electrical property measurements on these composites have also been described. The last chapter – Chapter IV, divided into two sections, discusses the covalent functionalization of CNTs with a variety of polymers using two main approaches: “grafting from” and “grafting to”. Using the first approach we have grown polyamide (PA) chains from the surface of caprolactam grafted CNTs by anionic ring opening polymerization. The tensile properties of the PA based composites prepared therefrom containing pristine, amine- and PA-functionalized CNTs have been investigated. The radical polymerization of vinyl imidazolium based IL monomers attached to the activated CNT surface is also given in this section. In the second part of Chapter IV, we have reported several “grafting to” functionalization strategies including radical addition and “defect site” grafting used for the preparation of CNTs covalently attached with polymers intended to blend well with epoxy matrices." Document : Thèse de Doctorat Etablissement_delivrance : Institut National Polytechnique de Toulouse - INPT Date_soutenance : 18/07/2012 Ecole_doctorale : Sciences de la Matière (Toulouse) Domaine : Sciences de l'ingénieur [physics]/Matériaux/ chimie-chimie de coordination En ligne : https://theses.hal.science/search/index?q=Tunckol%2C+Meltem

Immobilization of molecular late transition metal polymerization catalysts on nanomaterials / Zhang, Liping  

Public ISBD Titre : Immobilization of molecular late transition metal polymerization catalysts on nanomaterials Type de document : texte imprimé Auteurs : Zhang, Liping, Auteur ; Durand, Jérôme, Directeur de thèse Année de publication : 2014 Langues : Anglais (eng) Tags : ETHYLENE POLYMERIZATION  ISOPRENE POLYMERIZATION  LATE TRANSITION METAL CATALYST  MULTI-WALLED CARBON NANOTUBES  FEW LAYER GRAPHENE  IRON PARTICLES  PARTICLES SUPPORTED CATALYST  PROTECTIVE ABILITY  NANOCOMPOSITES Résumé : "This present thesis deals with the development of active olefin polymerization catalysts based on late transition metal (nickel and iron) imino-pyridine complexes supported on nanomaterial. Chapter I gives a comprehensive literature review of unsupported and supported ethylene polymerization catalyst. In Chapter II we report the ethylene polymerization studies using nickel complexes containing an –NH2 group for covalent immobilization on multi-walled carbon nanotubes (MWCNTs) of the corresponding precatalysts. Comparison of the homogeneous catalysts with their supported counterparts evidenced higher catalytic activity and higher molecular weights for the polymers produced. In Chapter III, iron complexes containing a pyrene group have been synthesized and immobilized on MWCNTs through non-covalent ?-? interactions between pyrene group and surface of MWCNTs. Activated by MMAO, both the iron complexes and immobilized catalysts show high activities for ethylene polymerization. It was possible to evidence that MWCNTs have a great influence on the catalytic activity and on the structure of the resulting polyethylenes. Imino-pyridine nickel complexes containing various kinds of aromatic groups have been synthesized in Chapter IV and polymerization conditions in the presence and in the absence of nanocarbon materials, such as MWCNTs or few layer graphene (FLG), are discussed. For those nickel catalysts bearing 1-aryliminoethylpyridine ligands, the presence of MWCNTs in the catalytic mixture allows the formation of waxes of lower molecular weight and polydispersity, whereas the presence of FLG proved to be beneficial for the catalytic activity. In Chapter V, isoprene polymerization catalyzed by iron complexes containing polyaromatic groups and non-covalently supported on nanoparticles and confined into the inner cavity of MWCNTs (Cat@NPs and Cat@NPs@MWCNTs) are investigated. Iron complexes show excellent activity for the isoprene polymerization and produced high glass temperature polyisoprene with a high trans-1,4-polyisoprene selectivity. Polymer nanocomposites are produced by supported catalysts and, transmission electron microscopy (TEM) evidenced efficient coating of the resulting polyisoprene around the oxygen sensitive iron nanoparticles." Document : Thèse de Doctorat Etablissement_delivrance : Institut National Polytechnique de Toulouse - INPT Date_soutenance : 24/01/2014 Ecole_doctorale : Sciences de la Matière (université Toulouse III P. Sabatier) Domaine : Chimie/Génie chimique En ligne : http://oatao.univ-toulouse.fr/11748/ Immobilization of molecular late transition metal polymerization catalysts on nanomaterials [texte imprimé] / Zhang, Liping, Auteur ; Durand, Jérôme, Directeur de thèse . - 2014. Langues : Anglais (eng) Tags : ETHYLENE POLYMERIZATION  ISOPRENE POLYMERIZATION  LATE TRANSITION METAL CATALYST  MULTI-WALLED CARBON NANOTUBES  FEW LAYER GRAPHENE  IRON PARTICLES  PARTICLES SUPPORTED CATALYST  PROTECTIVE ABILITY  NANOCOMPOSITES Résumé : "This present thesis deals with the development of active olefin polymerization catalysts based on late transition metal (nickel and iron) imino-pyridine complexes supported on nanomaterial. Chapter I gives a comprehensive literature review of unsupported and supported ethylene polymerization catalyst. In Chapter II we report the ethylene polymerization studies using nickel complexes containing an –NH2 group for covalent immobilization on multi-walled carbon nanotubes (MWCNTs) of the corresponding precatalysts. Comparison of the homogeneous catalysts with their supported counterparts evidenced higher catalytic activity and higher molecular weights for the polymers produced. In Chapter III, iron complexes containing a pyrene group have been synthesized and immobilized on MWCNTs through non-covalent ?-? interactions between pyrene group and surface of MWCNTs. Activated by MMAO, both the iron complexes and immobilized catalysts show high activities for ethylene polymerization. It was possible to evidence that MWCNTs have a great influence on the catalytic activity and on the structure of the resulting polyethylenes. Imino-pyridine nickel complexes containing various kinds of aromatic groups have been synthesized in Chapter IV and polymerization conditions in the presence and in the absence of nanocarbon materials, such as MWCNTs or few layer graphene (FLG), are discussed. For those nickel catalysts bearing 1-aryliminoethylpyridine ligands, the presence of MWCNTs in the catalytic mixture allows the formation of waxes of lower molecular weight and polydispersity, whereas the presence of FLG proved to be beneficial for the catalytic activity. In Chapter V, isoprene polymerization catalyzed by iron complexes containing polyaromatic groups and non-covalently supported on nanoparticles and confined into the inner cavity of MWCNTs (Cat@NPs and Cat@NPs@MWCNTs) are investigated. Iron complexes show excellent activity for the isoprene polymerization and produced high glass temperature polyisoprene with a high trans-1,4-polyisoprene selectivity. Polymer nanocomposites are produced by supported catalysts and, transmission electron microscopy (TEM) evidenced efficient coating of the resulting polyisoprene around the oxygen sensitive iron nanoparticles." Document : Thèse de Doctorat Etablissement_delivrance : Institut National Polytechnique de Toulouse - INPT Date_soutenance : 24/01/2014 Ecole_doctorale : Sciences de la Matière (université Toulouse III P. Sabatier) Domaine : Chimie/Génie chimique En ligne : http://oatao.univ-toulouse.fr/11748/

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