Download or read book Chemical Modification of Fluorinated Electroactive Polymers written by Konstantinos Kallitsis and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic electronics are a low cost alternative to silicon based electronics that nable the fabrication of flexible devices, broadening the scope of electronics beyond the limitations imposed by silicon. For organic electronics to find wider real world applications, three classes of materials have to be optimized. Those classes are conductors, semiconductors and insulators, which are the three building blocks for any electronic device. While organic conductors and semiconductors have attracted significant attention during the past 40 years, research in high dielectric constant and thus high performance insulators is lagging far behind. The class of organic insulating materials with the highest dielectric constant are the Fluorinated Electroactive Polymers (FEPs). FEPs can be categorized in two different groups with vastly different electronic properties. Those groups are the ferroelectrics and the relaxor-ferroelectrics. The ferroelectric polymers, with main representative the copolymer P(VDF-TrFE) find application in electronic devices such as sensors, actuators, non volatile memories and energy generators. On the other hand, relaxorferroelectric polymers, with main representative the P(VDF-TrFE-CTFE) terpolymer are high performance insulating materials and find application in electronics as dielectric layers, in devices such as capacitors, organic field effect transistors, flexible displays and electrocaloric cooling devices amongst others. Although the polymers mentioned above are compatible with a large variety of printing techniques, their limited compatibility with photolithography, which is the method of choice for large throughput electronics production limits their potential of realization. One of the main aims of this thesis was to alter the chemistry of such polymers, in a way that would make them directly compatible with photolithography, while maintaining their desirable electronic properties. To do so, a method allowing the introduction of additional functional groups on FEPs had to be developed. However, due to the excellent chemical stability of fluorinated polymers, developing such a method was a challenging task. The methods developed, use nucleophilic substitution to attach different functional groups on commercially available FEPs by leveraging the existence of groups prone to substitution on the polymer backbone, bypassing the innate chemical stability of such polymers. First, azido groups, known to cross-link upon irradiation with UV light were attached on relaxor ferroelectric P(VDF-TrFE-CTFE) terpolymers. The terpolymers bearing azido groups were directly used as negative photoresists in conventional photolithography process while maintaining a very high dielectric constant. Second, due to safety and stability issues, a more general approach was followed, consisting in grafting type II photoinitiators (based on aryl ketones) on the relaxorferroelectric P(VDF-TrFE-CTFE) and the ferroelectric P(VDF-TrFE) polymers. In those cases exceptionally stable polymers were obtained, with in some cases improved electroactive properties as compared to the pristine materials. These chemistries led us to an extraordinary case study, where FEPs bearing unsaturation were showing remarkable enchancement in electroactive properties. his very simple method of functionalizing FEPS paves the way to many more advances in the field.

Download or read book Direct Fluorination of Polymers written by A. P. Kharitonov and published by Nova Publishers. This book was released on 2008 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In this book fundamental features and industrial applications of the direct fluorination of polymers are reviewed. Direct fluorination of polymers (i.e. treatment of a polymer surface with gaseous fluorine and its mixtures) proceeds at room temperature spontaneously and can be considered as a surface modification process."--BOOK JACKET.

Download or read book Handbook of Specialty Fluorinated Polymers written by Susanta Banerjee and published by William Andrew. This book was released on 2015-04-24 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluoropolymers are used in applications demanding service at enhanced temperature while maintaining their structural integrity and have excellent combination of chemical, physical and mechanical properties. Advancements in materials and processing technology mean that a huge amount of research is currently taking place into new, high performance applications for specialty fluorinated polymers. This book is a complete review of the current research in synthesizing new fluorinated high performance polymers and their application in the field of low dielectric constant materials, membrane based separation (gas and liquid) and proton exchange membranes. Special emphasis is given to the preparation of soluble high performance polymers by incorporating fluorine and different structural elements so as to use these classes of polymers in different membrane based applications, including low dielectric constant materials, gas separation, pervaporation, proton exchange membranes in fuel cells, and more. The coverage of processing properties and commercial aspects - as well as a practical assessment of the advantages and disadvantages of specialty fluoropolymers compared to other materials - enables engineers and product designers to apply the latest scientific developments in this area in a practical setting. Thorough coverage of modern applications for specialty fluorinated polymers, including membranes and coatings – giving insight into recent research and the future direction of this technology Brings researchers and engineers up to date with the latest developments in specialty fluoropolymers, to assist in future materials research and part design Includes detailed assessment of the advantages and shortcomings of specialty fluorinated polymers, for ease of comparison with alternative materials

Download or read book Opportunities for Fluoropolymers written by Bruno Ameduri and published by Elsevier. This book was released on 2020-06-17 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluoropolymers are very unique materials. Since the middle of the twentieth century fluoropolymers have been used in applications where a wide temperature range, a high resistance to aggressive media, excellent tribological characteristics, and specific low adhesion are required. Today, researchers turn to fluoropolymers to solve new challenges and to develop materials with previously unattainable properties. Opportunities for Fluoropolymers: Synthesis, Characterization, Processing, Simulation and Recycling covers recent developments in fluoropolymers, including synthesis of new copolymers, strategies for radical polymerization of fluoromonomers (conventional or controlled; RDRP), and the modification of fluoropolymers to achieve desired material characteristics. This volume in the Progress in Fluorine Science series is ideal for researchers and engineers who want to learn about the synthetic strategies, properties, and recycling of these special polymers, as well as industrial manufacturers who are interested in achieving new product characteristics in their respective industries. Written by a global team of fluoropolymer experts Includes conventional techniques of radical polymerization and more modern controlled polymerization techniques Covers nanocomposites, which are of interest to researchers and industrial manufacturers of fluoropolymers

Download or read book Fluorinated Polymers written by B. Améduri and published by . This book was released on 2017 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis Characterization and Thermodynamics of Fluorinated Polymers written by Yu Ren and published by . This book was released on 2001 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fluorinated Materials for Energy Conversion written by Tsuyoshi Nakajima and published by Elsevier. This book was released on 2005-08-04 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluorinated Materials for Energy Conversion offers advanced information on the application of fluorine chemistry to energy conversion materials for lithium batteries, fuel cells, solar cells and so on. Fluorine compounds and fluorination techniques have recently gained important roles in improving the electrochemical characteristics of such energy production devices. The book therefore focuses on new batteries with high performance, the improvements of cell performance and the improvement of electrode and cell characteristics. The authors present new information on the effect of fluorine and how to make use of fluorination techniques and fluorine compounds. With emphasis on recent developments, this book is suitable for students, researchers and engineers working in chemistry, materials science and electrical engineering. Contains practical information, supported by examples Provides an update on recent developments in the field Written by specialists working in fluorine chemistry, electrochemistry, polymer and solid state chemistry

Download or read book Fluorinated Ionomers written by Walther Grot and published by William Andrew. This book was released on 2011-07-15 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluorinated ionomer polymers form impermeable membranes that conduct electricity, properties that have been put to use in large-scale electrochemical applications, revolutionizing the chlor-alkali industry and transforming production methods of some of the world’s highest-production commodity chemicals: chlorine, sodium hydroxide and potassium hydroxide. The use of fluorinated ionomers such as Nafion® have removed the need for mercury and asbestos in these processes and led to a massive reduction in electricity usage in these highly energy-intensive processes. Polymers in this group have also found uses in fuel-cells, metal-ion recovery, water electrolysis, plating, surface treatment of metals, batteries, sensors, drug release technologies, gas drying and humidification, and super-acid catalysis used in the production of specialty chemicals. Walther Grot, who invented Nafion® while working for DuPont, has written this book as a practical guide to engineers and scientists working in electrochemistry, the fuel cell industry and other areas of application. His book is a unique guide to this important polymer group and its applications, in membranes and other forms. The 2e expands this handbook by over a third, with new sections covering developments in electrolysis and membranes, additional information about the synthesis and science of the polymer group, and an enhanced provision of reference data. An essential reference for scientists working with electrolysis and electrochemical processes (the use of this polymer group in industrial chemistry processes is credited with a 1% reduction in global electricity usage) Covers the techniques involved in the growing range of applications for fluorinated ionomers, including fuel cells, batteries and drug delivery The only book on this important polymer group, written by Walther Grot, the inventor of the leading fluorinated ionomer, Nafion® from DuPont

Download or read book Fluorinated Polymers written by Bruno Ameduri and published by Royal Society of Chemistry. This book was released on 2016-10-28 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluoropolymers display a wide range of remarkable properties and are used in a number of applications including high performance elastomers, thermoplastics, coatings for optical fibers, and hydrophobic and lipophobic surfaces. Fluorinated Polymers: Synthesis, Properties, Processing and Simulation covers the fundamentals of different fluorinated polymers. Topics include the kinetics of homopolymerisation and copolymerization, process chemistry, and controlled radical co-polymerisation techniques. Written by internationally recognized academic and industrial contributors, the book will be of interest to those in industry and academia working in the fields of materials science, polymer chemistry and energy applications of polymers. Together with Fluorinated Polymers: Applications, these books provide a complete overview of different fluorinated polymer materials and their uses.

Download or read book Dielectric Polymer Materials for High Density Energy Storage written by Zhi-Min Dang and published by William Andrew. This book was released on 2018-06-13 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dielectric Polymer Materials for High-Density Energy Storage begins by introducing the fundamentals and basic theories on the dielectric behavior of material. It then discusses key issues on the design and preparation of dielectric polymer materials with strong energy storage properties, including their characterization, properties and manipulation. The latest methods, techniques and applications are explained in detail regarding this rapidly developing area. The book will support the work of academic researchers and graduate students, as well as engineers and materials scientists working in industrial research and development. In addition, it will be highly valuable to those directly involved in the fabrication of capacitors in industry, and to researchers across the areas of materials science, polymer science, materials chemistry, and nanomaterials. Focuses on how to design and prepare dielectric polymer materials with strong energy storage properties Includes new techniques for adjusting the properties of dielectric polymer materials Presents a thorough review of the state-of-the-art in the field of dielectric polymer materials, providing valuable insights into potential avenues of development

Download or read book Fluorinated Polymers written by Bruno Améduri and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Well architectured Fluoropolymers written by B. Améduri and published by Elsevier Science Limited. This book was released on 2004 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of the increasing need for ever better performing materials endowed with specific properties, macromolecular engineering has become a useful tool for designing well-architectured polymers (telomers, telechelics, stars, dendrimers, alternating, block- and graftcopolymers). These polymers are nowadays seeing an enormous growth. Among them, fluoropolymers are seen as high value added materials in many applications ranging from surfactants, optical fibers, biomaterials, coatings, to membranes for fuel cells. Indeed, the relationship between structure of the monomer to the properties of the polymers is of increasing interest so that these properties are tuned for the most appropriate applications. As most fluoropolymers are prepared from radical synthesis, this book devotes various parts on the use of the controlled radical (or pseudo-living) polymerisation of fluoromonomers leading to discoveries of thermoplastic elastomers or original surfactants for polymerisation in supercritical CO2. Well-Architectured Fluoropolymers: Synthesis, Properties and Applications, is composed of five chapters starting with a general introduction outlining basic concepts. Emphasis is placed on recent developments, and each chapter describes comprehensive techniques of synthesis of well-defined fluorotelomers or polymers, their properties, characterisations, and their applications, for immediate use by today's engineers, industrial and academic scientists, and researchers. The book has been arranged to enable self-managed reading and learning. It is both a source of data and a reference. - On the synthesis, properties and applications of fluoropolymers: remarkable, high value added materials applied in surfactants, optical fibres, biomaterials, coatings and membranes for fuel cells. - For immediate use by today's engineers, industrial and academic scientists, and researchers - Written to enable self-managed reading and learning, being both a source of data and a reference.

Download or read book Surface Modification of Polymers with Fluorine containing Plasmas deposition Vs Replacement Reactions written by Ih-Houng Loh and published by . This book was released on 1986 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Modification of Polymers Using Elemental Fluorine written by Francois Johannes Du Toit and published by . This book was released on 1995 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modified Chlorofluoropolymers written by John W. Green and published by . This book was released on 1995 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemical Reactions Between Metals and Fluorinated Polymers written by Brian Meadows and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fluorinated Polymers Applications written by Bruno Ameduri and published by Royal Society of Chemistry. This book was released on 2016-11-08 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Industrial Aspects of Fluorinated Oligomers and Polymers; Fluoroalkyl Acrylate Polymers and Their Applications; Structural Diversity in Fluorinated Polyphosphazenes: Exploring the Change from Crystalline Thermoplastics to High-Performance Elastomers and Other New Materials; Fluoroplastics and Fluoroelastomers - Basic Chemistry and High-performance Applications; Fluorinated Specialty Chemicals - Fluorinated Copolymers for Paints and Perfluoropolyethers for Coatings; Commercial Synthesis and Applications of Poly(Vinylidene Fluoride); The Role Perfluoropolyethers in the Development of Polymeric Proton Exchange Membrane Fuel Cells; Fluorinated Ionomers and Ionomer Membranes: Monomer and Polymer Synthesis and Applications; Research and Non-major Commercial Co- and Terpolymers of Tetrafluoroethylene; Chlorotrifluoroethylene Copolymers for Energy-applied Materials; Fabrication of Flexible Transparent Nanohybrids with Heat-resistance Properties Using a Fluorinated Crystalline Polymer; Creation of Superamphiphobic, Superhydrophobic/Superoleophilic and Superhydrophilic/Superoleophobic Surfaces by Using Fluoroalkyl-endcapped Vinyltrimethoxysilane Oligomer as a Key Intermediate