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Multiblock Copolymers Containing Hydrophobic And Hydrophilic Segments For Anion Exchange Membranes
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Book Synopsis Multiblock Copolymers Containing Hydrophobic and Hydrophilic Segments for Anion Exchange Membranes by : Derek J. Strasser
Download or read book Multiblock Copolymers Containing Hydrophobic and Hydrophilic Segments for Anion Exchange Membranes written by Derek J. Strasser and published by . This book was released on 2017 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis and Characterization of Well-defined, Amphiphilic, Ionic Copolymers by : Yuqing Liu (Polymer engineer)
Download or read book Synthesis and Characterization of Well-defined, Amphiphilic, Ionic Copolymers written by Yuqing Liu (Polymer engineer) and published by . This book was released on 2011 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amphiphilic ionic block copolymers are promising materials for the fabrication of ion-exchange membranes in fuel cells, water purification and advanced molecular engineering applications, such as nanotemplating. For example, block copolymer architectures provide a route to fabricate membranes with tunable transport properties through polymer self assembly. A significant challenge in this field is the synthesis of amphiphilic copolymers, where the intrinsic immiscibility of the hydrophobic and hydrophilic monomers complicates polymerization. To address the immiscibility between sodium p-styrenesulfonate and styrene monomers, styrenesulfonate monomers were neutralized by hydrophobic trialkyl ammonium salts via ion-exchange reactions, and synthesized successfully by RAFT polymerization with low polydispersity (PDI). Diblock or triblock copolymers with well-defined architectures were obtained by sequential RAFT polymerization with styrene. These sulfonate groups were then converted to the sodium salt form via ion-exchange to obtain amphiphilic ionic block copolymers. It was observed that dimethyl n-alkyl ammonium salts of polystyrenesulfonate displayed thermo-reversible gelation behavior in low polarity organic solvents. The investigation of the gelation behavior as a function of temperature, concentration, and solvent was consistent with gelation driven by the ionic aggregation of the polymer as would be expected for polyelectrolyte surfactant complexes in non-polar solvents. Cationic amphiphilic block/graft copolymers containing quaternary ammonium salts were prepared by the RAFT polymerization of polystyrene-b-poly(vinylbenzyl chloride) (PS-b-PVBC) copolymers, and sequential post-polymerization quaternization of the PVBC blocks. PS-b-PVBEA-b-PS triblock copolymers with well-defined architectures were obtained and the ion conductivity of the corresponding membranes, as well as the morphology of the membranes, was investigated. To improve the mechanical properties of the membranes, different architectures, such as pentablock, heptablock and graft copolymers, were designed and synthesized by RAFT polymerization, and chemical crosslinking was employed to improve the mechanical properties and control the swelling in water. Lastly, a new method to prepare multiblock copolymers via a facile route was developed. Polytrithiocarbonates were prepared by condensation polymerization of a dicarboxylic acid functional trithiocarbonate and a diol, and the trithiocarbonate group was controlled by tuning the amount of acid catalyst and reaction time. The polytrithiocarbonate RAFT agents were used to polymerize PS, polystyrene-b-poly (tert-butylstyrene) (PS-b-PtBS), and PS-b-PVBC. The PDI of the polymers toward 2, but the PDI of the polymer blocks between two trithiocarbonate groups was narrow (1.1-1.3 for PS and PS-b-PtBS, and 1.46 for PS-b-PVBC). The PVBC segments were quaternized to achieve anionic amphiphilic multiblock copolymers.
Book Synopsis Patent Applications by : Thomas F. DeRosa
Download or read book Patent Applications written by Thomas F. DeRosa and published by John Wiley & Sons. This book was released on 2009-12-15 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: A look at where novel polymer chemistry is heading Covering patent literature and process improvements in twenty-four polymer subject areas, Patent Applications: A Tool for Identifying Advances in Polymer Chemistry R &D provides researchers with current polymer research not yet published in journals or patents. The review and analysis by the author offers a more thorough understanding and concise package of the patent application. In addition extensive structure depictions of intermediates, products, and derivatives allow the researcher to better visualize material applications both in and beyond polymer chemistry. The coverage includes the following polymeric categories: Additives Adhesives Cosmetics Crystalline Materials Dyes Electrically Active Polymers Energetic Polymers Engineered Plastics Fibers Fuel Cells Improved Synthetic Methods Initiators/Modifiers Light Emitting Polymers Medical Polymers Nitric Oxide Releasing Agents Optical Pharmaceuticals Photoresists Phototherapy Recording Materials Stents Sutures Tissue Replacement Viscoelastic Polymers With this thorough and accurate survey, DeRosa provides a practical resource for polymer and organic chemists, as well as graduate students, to identify research and market trends, and to stay up-to-date on current developments in the field.
Book Synopsis Sustainable Nanoscale Engineering by : Gyorgy Szekely
Download or read book Sustainable Nanoscale Engineering written by Gyorgy Szekely and published by Elsevier. This book was released on 2019-09-18 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable Nanoscale Engineering: From Materials Design to Chemical Processing presents the latest on the design of nanoscale materials and their applications in sustainable chemical production processes. The newest achievements of materials science, in particular nanomaterials, opened new opportunities for chemical engineers to design more efficient, safe, compact and environmentally benign processes. These materials include metal-organic frameworks, graphene, membranes, imprinted polymers, polymers of intrinsic microporosity, nanoparticles, and nanofilms, to name a few. Topics discussed include gas separation, CO2 sequestration, continuous processes, waste valorization, catalytic processes, bioengineering, pharmaceutical manufacturing, supercritical CO2 technology, sustainable energy, molecular imprinting, graphene, nature inspired chemical engineering, desalination, and more. - Describes new, efficient and environmentally accepted processes for nanomaterials design - Includes a large array of materials, such as metal-organic frameworks, graphene, imprinted polymers, and more - Explores the contribution of these materials in the development of sustainable chemical processes
Book Synopsis Novel Block Copolymers for Dialysis Membranes by : Steven Paul Rannard
Download or read book Novel Block Copolymers for Dialysis Membranes written by Steven Paul Rannard and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electrochemical Water Electrolysis by : Lei Zhang
Download or read book Electrochemical Water Electrolysis written by Lei Zhang and published by CRC Press. This book was released on 2020-04-08 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprehensively describes the fundamentals of electrochemical water electrolysis as well as the latest materials and technological developments. It addresses a variety of topics such as electrochemical processes, materials, components, assembly and manufacturing, and degradation mechanisms, as well as challenges and strategies. It also includes an understanding of how materials and technologies for electrochemical water electrolysis have developed in recent years, and it describes the progress in improving performance and providing benefits to energy systems and applications. Features the most recent advances in electrochemical water electrolysis to produce hydrogen Discusses cutting-edge materials and technologies for electrochemical water electrolysis Includes both experimental and theoretical approaches that can be used to guide and promote materials as well as technological development for electrochemical water electrolysis Comprises work from international leading scientists active in electrochemical energy and environmental research and development Provides invaluable information that will benefit readers from both academia and industry With contributions from researchers at the top of their fields, the book includes in-depth discussions covering the engineering of components and applied devices, making this an essential read for scientists and engineers working in the development of electrochemical energy devices and related disciplines.
Book Synopsis Proton Exchange Membrane Fuel Cells 7 by :
Download or read book Proton Exchange Membrane Fuel Cells 7 written by and published by The Electrochemical Society. This book was released on 2007 with total page 1581 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Polymers for PEM Fuel Cells by : Hongting Pu
Download or read book Polymers for PEM Fuel Cells written by Hongting Pu and published by John Wiley & Sons. This book was released on 2014-10-01 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Including chemical, synthetic, and cross-disciplinary approaches; this book includes the necessary techniques and technologies to help readers better understand polymers for polymer electrolyte membrane (PEM) fuel cells. The methods in the book are essential to researchers and scientists in the field and will lead to further development in polymer and fuel cell technologies. • Provides complete, essential, and comprehensive overview of polymer applications for PEM fuel cells • Emphasizes state-of-the-art developments and methods, like PEMs for novel fuel cells and polymers for fuel cell catalysts • Includes detailed chapters on major topics, like PEM for direct liquid fuel cells and fluoropolymers and non-fluorinated polymers for PEM • Has relevance to a range of industries – like polymer engineering, materials, and green technology – involved with fuel cell technologies and R&D
Book Synopsis Energy Production and Storage by : Robert H. Crabtree
Download or read book Energy Production and Storage written by Robert H. Crabtree and published by John Wiley & Sons. This book was released on 2013-02-19 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy production and storage are central problems for our time. In principle, abundant energy is available from the sun to run the earth in a sustainable way. Solar energy can be directly harnessed by agricultural and photovoltaic means, but the sheer scale of the energy demand poses severe challenges, for example any major competition between biomass production and food production would simply transfer scarcity from energy to food. Indirect use of solar energy in the form of wind looks also promising, especially for those regions not blessed with abundant sunlight. Other modes such as tidal and wave energy may well become important niche players. Inorganic chemistry plays a decisive role in the development of new energy technologies and this Volume covers some promising modes of alternative energy production and storage that minimize the atmospheric burden of fossil-derived carbon monoxide. No one production or storage mode is likely to dominate, at least at first, and numerous possibilities need to be explored to compare their technical feasibility and economics. This provides the context for a broad exploration of novel ideas that we are likely to see in future years as the field expands. This Volume covers a wide range of topics, such as: - Water splitting, only water is a sufficiently cheap and abundant electron source for global exploitation; - Energy conversion by photosynthesis; - Molecular catalysts for water splitting; - Thermochemical water splitting; - Photocatalytic hydrogen production; - Artificial photosynthesis, progress of the Swedish Consortium; - Hydrogen economy; - Reduction of carbon dioxide to useful fuels; - Conversion of methane to methanol; - Dye sensitized solar cells; - Photoinitiated electron transfer in fuel cells; - Proton exchange membranes for fuel cells; - Intermediate temperature solid oxide fuel cells; - Direct Ethanol fuel cells; - Molecular catalysis for fuel cells; - Enzymes and microbes in fuel cells; - Li-Ion batteries; - Magic Angle Spinning NMR studies of battery materials; Supercapacitors and electrode materials. About EIC Books The Encyclopedia of Inorganic Chemistry (EIC) has proved to be one of the defining standards in inorganic chemistry, and most chemistry libraries around the world have access either to the first or second print edition, or to the online version. Many readers, however, prefer to have more concise thematic volumes, targeted to their specific area of interest. This feedback from EIC readers has encouraged the Editors to plan a series of EIC Books, focusing on topics of current interest. They will appear on a regular basis, and will feature leading scholars in their fields. Like the Encyclopedia, EIC Books aim to provide both the starting research student and the confirmed research worker with a critical distillation of the leading concepts in inorganic and bioinorganic chemistry, and provide a structured entry into the fields covered. This volume is also available as part of Encyclopedia of Inorganic Chemistry, 5 Volume Set. This set combines all volumes published as EIC Books from 2007 to 2010, representing areas of key developments in the field of inorganic chemistry published in the Encyclopedia of Inorganic Chemistry. Find out more.
Book Synopsis Electroactive Polymers by : S.A. Hashmi
Download or read book Electroactive Polymers written by S.A. Hashmi and published by Allied Publishers. This book was released on 2015-02-16 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series of conference on “Electroactive Polymers: Materials and Devices” broadly covers the emerging areas of electron conducting polymers, ion conducting polymers, ferro electric and ferro magnetic polymers, liquid crystalline polymers, biopolymers and bio-compatible composites, superconducting polymers/organic super conductors, nano-polymers and polymer-nano composites which have been well received by the scientific community working in these fields.
Book Synopsis PEM Electrolysis for Hydrogen Production by : Dmitri Bessarabov
Download or read book PEM Electrolysis for Hydrogen Production written by Dmitri Bessarabov and published by CRC Press. This book was released on 2016-02-03 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: An ever-increasing dependence on green energy has brought on a renewed interest in polymer electrolyte membrane (PEM) electrolysis as a viable solution for hydrogen production. While alkaline water electrolyzers have been used in the production of hydrogen for many years, there are certain advantages associated with PEM electrolysis and its relevan
Book Synopsis Fuel Cells II by : Günther G. Scherer
Download or read book Fuel Cells II written by Günther G. Scherer and published by Springer Science & Business Media. This book was released on 2008-09-11 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concept to utilize an ion-conducting polymer membrane as a solid po- mer electrolyte offers several advantages regarding the design and operation of an electrochemical cell, as outlined in Volume 215, Chapter 1 (L. Gubler, G.G. Scherer). Essentially, the solvent and/or transport medium, e.g., H O, 2 + for the mobile ionic species, e.g., H for a cation exchange membrane, is taken up by and con?ned into the nano-dimensional morphology of the i- containingdomainsofthepolymer.Asaconsequence, aphaseseparationinto a hydrophilic ion-containing solvent phase and a hydrophobic polymer ba- bone phase establishes. Because of the narrow solid electrolyte gap in these cells, low ohmic losses reducing the overall cell voltage can be achieved, even at highcurrent densities. This concept was applied to fuel cell technology at a very early stage; h- ever, performance and reliability of the cells were low due to the dissatisfying membrane properties at that time. The development of per?uoro sulfonate and carboxylate-type membranes, in particular for the chlor-alkali process, directly fostered the further development of proton-conducting membranes and, as a consequence, also the progress in this type of fuel cell technology (polymer electrolyte fuel cell, PEFC).
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Encyclopedia of Applied Electrochemistry by : Gerhard Kreysa
Download or read book Encyclopedia of Applied Electrochemistry written by Gerhard Kreysa and published by Springer. This book was released on 2014-04-16 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: While electrochemistry deals with the interrelation of electrical and chemical phenomena, applied electrochemistry is the interface between fundamental science and practical applications. It is vitally important for our industrial society of today and even more so for its future. A successful response to global challenges such as securing energy supply, developing energy-efficient and sustainable processes and materials, environmentally friendly technologies, or monitoring physiological processes for health care requires electrochemical research and engineering. The Encyclopedia of Applied Electrochemistry provides an authoritative compilation of entries dealing with all applied aspects of electrochemistry, including basic theoretical concepts, and instrumentation. As a unique, one-stop resource for sound and digested knowledge in this field, the Encyclopedia of Applied Electrochemistry comprises the first applications-oriented interdisciplinary work on the critical technologies underlying key advances such as energy efficiency (e.g. batteries for electric cars, etc.), green and sustainable chemical industries, new materials (corrosion resistant and low-friction), and biomedical sensors.
Book Synopsis Polymer Electrolyte Membrane and Direct Methanol Fuel Cell Technology by : Christoph Hartnig
Download or read book Polymer Electrolyte Membrane and Direct Methanol Fuel Cell Technology written by Christoph Hartnig and published by Elsevier. This book was released on 2012-03-19 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer electrolyte membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs) technology are promising forms of low-temperature electrochemical power conversion technologies that operate on hydrogen and methanol respectively. Featuring high electrical efficiency and low operational emissions, they have attracted intense worldwide commercialization research and development efforts. These R&D efforts include a major drive towards improving materials performance, fuel cell operation and durability. In situ characterization is essential to improving performance and extending operational lifetime through providing information necessary to understand how fuel cell materials perform under operational loads.This two volume set reviews the fundamentals, performance, and in situ characterization of PEMFCs and DMFCs. Volume 1 covers the fundamental science and engineering of these low temperature fuel cells, focusing on understanding and improving performance and operation. Part one reviews systems fundamentals, ranging from fuels and fuel processing, to the development of membrane and catalyst materials and technology, and gas diffusion media and flowfields, as well as life cycle aspects and modelling approaches. Part two details performance issues relevant to fuel cell operation and durability, such as catalyst ageing, materials degradation and durability testing, and goes on to review advanced transport simulation approaches, degradation modelling and experimental monitoring techniques.With its international team of expert contributors, Polymer electrolyte membrane and direct methanol fuel cell technology Volumes 1 & 2 is an invaluable reference for low temperature fuel cell designers and manufacturers, as well as materials science and electrochemistry researchers and academics. - Covers the fundamental science and engineering of polymer electrolyte membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs), focusing on understanding and improving performance and operation - Reviews systems fundamentals, ranging from fuels and fuel processing, to the development of membrane and catalyst materials and technology, and gas diffusion media and flowfields, as well as life cycle aspects and modelling approaches - Details performance issues relevant to fuel cell operation and durability, such as catalyst ageing, materials degradation and durability testing, and reviews advanced transport simulation approaches, degradation modelling and experimental monitoring techniques
Book Synopsis Membrane Fabrication by : Nidal Hilal
Download or read book Membrane Fabrication written by Nidal Hilal and published by CRC Press. This book was released on 2015-03-02 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membranes play a crucial role in ensuring the optimum use and recovery of materials in manufacturing. In the process industries, they are required for efficient production and minimization of environmental impact. They are also essential for the efficient production of clean water, a significant global issue. Membrane Fabrication brings together ex
Book Synopsis Polymerized Ionic Liquids by : Ali Eftekhari
Download or read book Polymerized Ionic Liquids written by Ali Eftekhari and published by Royal Society of Chemistry. This book was released on 2017-09-18 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series covers the fundamentals and applications of different smart material systems from renowned international experts.
