Author: BRUNO.. ALONSO
Publisher:
ISBN:
Category :
Languages : fr
Pages : 310
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Book Description
CETTE THESE A EU POUR OBJET PRINCIPAL LA SYNTHESE, LA CARACTERISATION ET L'ETUDE DE PROPRIETES MECANIQUES ET OPTIQUES DE MATERIAUX POLY-DIMETHYLSILOXANE-VANADATE, GELS OU RESEAUX POLYMERES RESULTANT DE L'HYDROLYSE D'ALCOXYDES DE SILICIUM ET DE VANADIUM (V). LES PRINCIPAUX RESULTATS CONCERNENT L'ETUDE DES INTERACTIONS ENTRE UNITES DIMETHYLSILOXANE ET UNITES VANADATE TOUT AU LONG DES PROCESSUS DE FORMATION ET DE DEGRADATION DES GELS, LA DESCRIPTION DE LA STRUCTURE DU GEL ET L'IDENTICATION DE CORRELATIONS ENTRE CETTE STRUCTURE ET LES PROPRIETES. NOUS AVONS PU MONTRE QUE LA CO-HYDROLYSE DES PRECURSEURS CONDUIT A DES MATERIAUX PLUS STABLES QUE CEUX OBTENUS PAR PRE-HYDROLYSE DU PRECURSEUR SILICE POUR DES RAPPORTS MOLAIRES V/SI PROCHES DE 0,1. CETTE PARTICULARITE EST LIEE AUX ROLES OXOPHILE ET CATALYTIQUE DU VANADIUM (V) MAIS AUSSI A DES AFFINITES CHIMIQUES IMPORTANTES AVEC LES UNITES DIMETHYLSILOXANE QUI PERMETTENT DE CONTRECARRER DANS UN PREMIER TEMPS LES PROCESSUS DE SEPARATION DE PHASES. LES GELS OBTENUS SONT CONSTITUEES DE SEGMENTS DIMETHYLSILOXANE COURTS (5 A 6 UNITES EN MOYENNE) LIES DES UNITES VANADATE TRI-FONCTIONNELLES ISOLEES. MALGRE CETTE HOMOGENEITE CHIMIQUE, NOUS AVONS PU A MAINTES REPRISES DISTINGUER DEUX TYPES DE SITES. ILS ONT ETE ASSOCIES AUX EFFETS DISJOINTS DE LA RETICULATION ET DE LA TERMINAISON DES CHAINES.
Author: Khouloud Jlassi
Publisher: Elsevier
ISBN: 0323461611
Category : Technology & Engineering
Languages : en
Pages : 548
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Book Description
Clay–Polymer Nanocomposites is a complete summary of the existing knowledge on this topic, from the basic concepts of synthesis and design to their applications in timely topics such as high-performance composites, environment, and energy issues. This book covers many aspects of synthesis such as in- situ polymerization within the interlamellar spacing of the clays or by reaction of pristine or pre-modified clays with reactive polymers and prepolymers. Indeed, nanocomposites can be prepared at industrial scale by melt mixing. Regardless the synthesis method, much is said in this book about the importance of theclay pre-modification step, which is demonstrated to be effective, on many occasions, in obtaining exfoliated nanocomposites. Clay–Polymer Nanocomposites reports the background to numerous characterization methods including solid state NMR, neutron scattering, diffraction and vibrational techniques as well as surface analytical methods, namely XPS, inverse gas chromatography and nitrogen adsorption to probe surface composition, wetting and textural/structural properties. Although not described in dedicated chapters, numerous X-ray diffraction patterns of clay–polymer nanocomposites and reference materials are displayed to account for the effects of intercalation and exfoliations of layered aluminosilicates. Finally, multiscale molecular simulation protocols are presenting for predicting morphologies and properties of nanostructured polymer systems with industrial relevance. As far as applications are concerned, Clay–Polymer Nanocomposites examines structural composites such as clay–epoxy and clay–biopolymers, the use of clay–polymer nanocomposites as reactive nanocomposite fillers, catalytic clay-(conductive) polymers and similar nanocomposites for the uptake of hazardous compounds or for controlled drug release, antibacterial applications, energy storage, and more. - The most comprehensive coverage of the state of the art in clay–polymer nanocomposites, from synthesis and design to opportunities and applications - Covers the various methods of characterization of clay–polymer nanocomposites - including spectroscopy, thermal analyses, and X-ray diffraction - Includes a discussion of a range of application areas, including biomedicine, energy storage, biofouling resistance, and more
Author: Michel Andre Aegerter
Publisher: Springer Science & Business Media
ISBN: 0387889531
Category : Technology & Engineering
Languages : en
Pages : 474
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Book Description
Sol-Gel Techniques for Glass Producers and Users provides technological information, descriptions and characterizations of prototypes, or products already on the market, and illustrates advantages and disadvantages of the sol-gel process in comparison to other methods. The first chapter entitled "Wet Chemical Technology" gives a summary of the basic principles of the sol-gel chemistry. The most promising applications are related to coatings. Chapter 2 describes the various "Wet Chemical Coating Technologies" from glass cleaning to many deposition and post-coating treatment techniques. These include patterning of coatings through direct or indirect techniques which have became very important and for which the sol-gel processing is particularly well adapted. Chapter 3 entitled "Bulk Glass Technologies" reports on the preparation of special glasses for different applications. Chapter 4 entitled "Coatings and Materials Properties" describes the properties of the different coatings and the sol-gel materials, fibers and powders. The chapter also includes a section dedicated to the characterization techniques especially applied to sol-gel coatings and products.
Author: Koji Sugioka
Publisher: Springer
ISBN: 3642105238
Category : Science
Languages : en
Pages : 353
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Book Description
Miniaturization and high precision are rapidly becoming a requirement for many industrial processes and products. As a result, there is greater interest in the use of laser microfabrication technology to achieve these goals. This book composed of 16 chapters covers all the topics of laser precision processing from fundamental aspects to industrial applications to both inorganic and biological materials. It reviews the sate of the art of research and technological development in the area of laser processing.
Author: Huan Pang
Publisher: Springer Nature
ISBN: 9811373728
Category : Science
Languages : en
Pages : 224
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Book Description
This book provides a comprehensive review of functional nanomaterials for electrochemical applications, presenting interesting examples of nanomaterials with different dimensions and their applications in electrochemical energy storage. It also discusses the synthesis of functional nanomaterials, including quantum dots; one-dimensional, two-dimensional and three-dimensional nanostructures; and advanced nanocomposites. Highlighting recent advances in current electrochemical energy storage hotpots: lithium batteries, lithium-ion batteries, sodium-ion batteries, other metal-ion batteries, halogen ion batteries, and metal–gas batteries, this book will appeal to readers in the various fields of chemistry, material science and engineering.
Author: Gregg B. Fields
Publisher: Academic Press
ISBN:
Category : Medical
Languages : en
Pages : 828
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Book Description
The critically acclaimed laboratory standard for more than forty years, Methods in Enzymology is one of the most highly respected publications in the field of biochemistry. Since 1955, each volumehas been eagerly awaited, frequently consulted, and praised by researchers and reviewers alike. More than 275 volumes have been published (all of them still in print) and much of the material is relevant even today-truly an essential publication for researchers in all fields of life sciences. Key Features * Solid-phase peptide synthesis * Applications of peptides for structural and biological studies * Characterization of synthetic peptides
Author: Avanish Kumar Srivastava
Publisher: CRC Press
ISBN: 9814411361
Category : Science
Languages : en
Pages : 418
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Book Description
Nanomaterials, their synthesis, and property studies have been an obsession with modern current physicists, chemist, and materials scientists for their vast array of technological implications and the remarkable way their properties are modified or enhanced when the size dimensions are reduced to the realm of nanometers. Although nanomaterials, for
Author: Hongqi Sun
Publisher: John Wiley & Sons
ISBN: 3527825088
Category : Science
Languages : en
Pages : 480
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Book Description
This comprehensive book systematically covers the fundamentals in solar energy conversion to chemicals, either fuels or chemical products. It includes natural photosynthesis with emphasis on artificial processes for solar energy conversion and utilization. The chemical processes of solar energy conversion via homogeneous and/or heterogeneous photocatalysis has been described with the mechanistic insights. It also consists of reaction systems toward a variety of applications, such as water splitting for hydrogen or oxygen evolution, photocatalytic CO2 reduction to fuels, and light driven N2 fixation, etc. This unique book offers the readers a broad view of solar energy utilization based on chemical processes and their perspectives for future sustainability.
Author: Ales Iglic
Publisher: Academic Press
ISBN: 0123965349
Category : Medical
Languages : en
Pages : 358
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Book Description
Advances in Planar Lipid Bilayers and Liposomes volumes cover a broad range of topics, including main arrangements of the reconstituted system, namely planar lipid bilayers as well as spherical liposomes. The invited authors present the latest results of their own research groups in this exciting multidisciplinary field. Incorporates contributions from newcomers and established and experienced researchers Explores the planar lipid bilayer systems and spherical liposomes from both theoretical and experimental perspectives Serves as an indispensable source of information for new scientists
Author: Arturo M. Baró
Publisher: John Wiley & Sons
ISBN: 3527327584
Category : Science
Languages : en
Pages : 385
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Book Description
About 40 % of current atomic force microscopy (AFM) research is performed in liquids, making liquid-based AFM a rapidly growing and important tool for the study of biological materials. This book focuses on the underlying principles and experimental aspects of AFM under liquid, with an easy-to-follow organization intended for new AFM scientists. The book also serves as an up-to-date review of new AFM techniques developed especially for biological samples. Aimed at physicists, materials scientists, biologists, analytical chemists, and medicinal chemists. An ideal reference book for libraries. From the contents: Part I: General Atomic Force Microscopy * AFM: Basic Concepts * Carbon Nanotube Tips in Atomic Force Microscopy with * Applications to Imaging in Liquid * Force Spectroscopy * Atomic Force Microscopy in Liquid * Fundamentals of AFM Cantilever Dynamics in Liquid * Environments * Single-Molecule Force Spectroscopy * High-Speed AFM for Observing Dynamic Processes in Liquid * Integration of AFM with Optical Microscopy Techniques Part II: Biological Applications * DNA and Protein-DNA Complexes * Single-Molecule Force Microscopy of Cellular Sensors * AFM-Based Single-Cell Force Spectroscopy * Nano-Surgical Manipulation of Living Cells with the AFM
