Recent Trends In Ionic Polymerization
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Recent Trends In Ionic Polymerization
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Author : S. Sivaram
language : en
Publisher: Wiley-VCH
Release Date : 2006-10-20
Recent Trends In Ionic Polymerization written by S. Sivaram and has been published by Wiley-VCH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-10-20 with Technology & Engineering categories.
The elegance of the technique of ionic polymerization is the ability to synthesize polymers with well defined architectures without any side reactions. As the control of the polymerization becomes the motivation, atom-transfer radical polymerization, which has similar attributes of ionic polymerization and is a more recent addition to the armory of synthetic methods available to polymer chemists, was also included in the Symposium. Selected contributions presented at the Symposium have been compiled in this special volume of Macromolecular Symposia and is reflective of contemporary developments in the area of ionic polymerizations.
New Trends In Ionic Co Polymers And Hybrids
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Author : Ecaterina Stela Dragan
language : en
Publisher: Nova Publishers
Release Date : 2007
New Trends In Ionic Co Polymers And Hybrids written by Ecaterina Stela Dragan and has been published by Nova Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Science categories.
Ionic polymers are present almost everywhere in the world, biological systems being the most important reservoir of ionic polymers such as nucleic acids, and many proteins, alginic acid and so on. Artificial ionic polymers derived from natural polymers such as chitin, cellulose or starch, by adequate chemical transformations, and a multitude of synthetic ionic polymers are generated in the laboratory. They can contain ionic or ionisable groups. Ionic polymers, either artificial or synthetic, have a multitude of applications such as: stabilisation or destabilisation of dispersions, thickening of solutions, oil recovery aids, water purification, corrosion inhibitors, soil conditioners, anti-static agents, additives in cosmetics and foods, surface modification, and so forth. Solid ionic hybrid materials found applications such as polymer electrolytes or substrates for the organic synthesis in solid phase. Many books and article reviews were dedicated to this wide class of polymers but the permanent diversification of their structures and applications ask for new and updated overviews on this field. Therefore, this book reports updated information from literature as well as original contributions in the field of ionic (co)polymers and hybrids, mainly on the applications of ionic polymers and hybrids such as: self-assembled multi-layers, ionic polymers containing azobenzene chromophore, phase separation processes, chelating ion exchangers, polymer electrolytes, functionalised solid surfaces and ionic hybrid hydrogels.
Ionic Polymerization In Ionic Liquids
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Author : Yibo Wu
language : en
Publisher:
Release Date : 2018
Ionic Polymerization In Ionic Liquids written by Yibo Wu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Science categories.
Ionic liquids have emerged as a new class of solvents for ionic polymerization due to their low volatility, chemical stability, high conductivity, wide electrochemical window. The advantages and limitations of application of ionic liquids as solvents for ionic polymerization processes are critically discussed in this chapter. The field of cationic polymerization in ionic liquid has undergone rapid growth in recent years. The most important types of cationic monomers, such as styrene and its derivatives, vinyl ethers and isobutylene have been polymerized in ionic liquids; even undergo living polymerization. Corresponding elementary reactions of cationic polymerization in ionic liquids were proposed. Methyl methacrylate and styrene can undergo anionic polymerization in ionic liquids. However, ionic liquids seem unsuitable solvents for anionic polymerization.
Ionic Polymerization And Living Polymers
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Author : M. Szwarc
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Ionic Polymerization And Living Polymers written by M. Szwarc and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
More than simply an up-to-date review of ionic polymerization, this book presents an in-depth and critical comparison of the anionic and cationic polymerization of vinyl monomers and heterocyclic compounds. These different modes of ionic polymerization are examined with regard to their capacity for producing living polymers. The concept of living polymers is re-examined and redefined in light of current knowledge of ionic polymerization and possible side reactions. Throughout, the authors offer perceptive insights into the basic concepts of polymerization chemistry and polymerization reaction mechanisms. The book begins with a review of ionic and radical polymerizations, the development of ionic polymerization, living and dormant polymers, and polymerizability. It goes on to consider important aspects of the structure and properties of ionic species; initiation and propagation of ionic polymerization; polymerization steps other than initiation or propagation, such as termination, isomerization, transfer, backbiting, and degraduation; and ionic copolymerization. Ionic Polymerization and Living Polymers is a much needed advanced text that will be widely read and referred to by polymer scientists, macromolecular chemists, and materials scientists.
Recent Advances In Ionic Liquids
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Author : Mohammed Muzibur Rahman
language : en
Publisher:
Release Date : 2018
Recent Advances In Ionic Liquids written by Mohammed Muzibur Rahman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Physical and theoretical chemistry categories.
Recent Advances in Ionic Liquids contains research on the preparation, characterization, and potential applications of stable ionic liquids (ILs). ILs are a class of low- and stable-melting point, ionic compounds that have a variety of properties allowing many of them to be sustainable green solvents. It is promising novel research from top to bottom and has received a lot of interest over the last few decades. It covers the advanced topics of physical, catalytic, chemical, polymeric, and potential applications of ILs. This book features interesting reports on cutting-edge science and technology related to the preparation, characterization, polymerization, and potential applications of ILs. This potentially unique work offers various approaches on the R&D implementation of ILs or related ionic catalysts and their conjugates. With this in mind, the authors present R&D on the preparation, properties, potential applications, and utility of ILs. The chapters describe important applications in a wide variety of contexts, including polymerization, devices, electrochemistry, and biotechnology. Both the theoretical and practical, it can be passed from the stable as well as molten salt to the ionic liquid and vice versa. Experimental and theoretical techniques for examining these studies are elaborated based on the methods for preparation, utilization, applications, and analysis. This book epitomizes the transfer of these techniques and methods between the differing temperature regimes, and is a major contribution to the future of both fields. The book presents an overview of current ILs fundamentals: preparation, polymerization, substantial applications, and enhancement of research worldwide. The techniques of ILs preparation, total characterization, and possible applications related with ILs as well as modified or conjugated material research are investigated. It is hoped that it will be an important book for research organizations, governmental research centers, and academic libraries engaged in recent R&D of ILs.
Ionic Polymerization And Living Polymers
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Author : M Szwarc
language : en
Publisher:
Release Date : 1993-08-31
Ionic Polymerization And Living Polymers written by M Szwarc and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-08-31 with categories.
More than simply an up-to-date review of ionic polymerization, this book presents an in-depth and critical comparison of the anionic and cationic polymerization of vinyl monomers and heterocyclic compounds. These different modes of ionic polymerization are examined with regard to their capacity for producing living polymers. The concept of living polymers is re-examined and redefined in light of current knowledge of ionic polymerization and possible side reactions. Throughout, the authors offer perceptive insights into the basic concepts of polymerization chemistry and polymerization reaction mechanisms. The book begins with a review of ionic and radical polymerizations, the development of ionic polymerization, living and dormant polymers, and polymerizability. It goes on to consider important aspects of the structure and properties of ionic species; initiation and propagation of ionic polymerization; polymerization steps other than initiation or propagation, such as termination, isomerization, transfer, backbiting, and degraduation; and ionic copolymerization. Ionic Polymerization and Living Polymers is a much needed advanced text that will be widely read and referred to by polymer scientists, macromolecular chemists, and materials scientists.
Ionic Liquid Based Technologies For Environmental Sustainability
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Author : Mohammad Jawaid
language : en
Publisher: Elsevier
Release Date : 2021-12-04
Ionic Liquid Based Technologies For Environmental Sustainability written by Mohammad Jawaid and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-12-04 with Science categories.
Ionic Liquid-based Technologies for Environmental Sustainability explores the range of sustainable and green applications of IL materials achieved in recent years, such as gas solubility, biomass pre-treatment, bio-catalysis, energy storage, gas separation and purification technologies. The book also provides a reference material for future research in IL-based technologies for environmental and energy applications, which are much in-demand due to sustainable, reusable and eco-friendly methods for highly innovative and applied materials. Written by eminent scholars and leading experts from around the world, the book aims to cover the synthesis and characterization of broad range of ionic liquids and their sustainable applications. Chapters provide cutting-edge research with state-of-the-art developments, including the use of IL-based materials for the removal of pharmaceuticals, dyes and value-added metals. Describes the fundamentals and major applications of ionic liquid materials Covers up-to-date developments in novel applications of IL materials Provides practical tips to aid researchers who work on ionic liquid applications
Ionic Polymerizations And Related Processes
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Author : Judit E. Puskas
language : en
Publisher: Springer Science & Business Media
Release Date : 1999
Ionic Polymerizations And Related Processes written by Judit E. Puskas and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Science categories.
In Ionic Polymerization and Related Processes, internationally recognised academic and industrial researchers discuss and debate the latest developments in the field. The major focus is on cationic polymerizations, but related anionic and controlled radical processes are also discussed.
Developments In Ionic Polymers 2
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Author : A.D. Wilson
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Developments In Ionic Polymers 2 written by A.D. Wilson and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
Ionic polymers, like elephants, are easier to recognise than to define. Several methods of classification have been attempted but none is wholly satisfactory because of the extreme diversity of ionic polymers, which range from the organic, water-soluble polyelectrolytes, through hydrogels and ionomer carboxylate rubbers, to the almost infusible inorganic silicate minerals. For this reason, a general classification is not only difficult, but has minimal utility. However, there are some characteristics of these materials that should be highlighted. The role of counterions is the significant one. These ions, either singly or as clusters, take part in the formation of ionic bonds which have a varying structural role. Often they act as crosslinks, but in the halato-polymers the ionic bonds form an integral part of the polymer backbone itself. Conversely, in polymers contain ing covalent crosslinks, such as the ion-exchange resins, the coun terions have virtually no structural role to play, since they dwell in cage-like structures without affecting the crosslinking, and are readily exchanged. They are, perhaps, best described as ion-containing polymers rather than structural ionic polymers. Another crucial factor is the role of water in ionic polymers. The presence of ionic bonds means that there is a tendency for these materials to interact with water. Where the ionic polymer contains a high proportion of ionic units, it acts as a hydrogel and may be highly soluble. Such interactions with water decrease sharply as the ionic content is reduced, though even then water can act as a plasticiser.
Catalytic Polymerization Of Cycloolefins
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Author : V. Dragutan
language : en
Publisher: Elsevier
Release Date : 2000-06-26
Catalytic Polymerization Of Cycloolefins written by V. Dragutan and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-06-26 with Technology & Engineering categories.
This book covers the most important topics concerning cationic Ziegler-Natta and ring-opening metathesis polymerization of cycloolefins. The work describes the major pathways that cycloolefins can follow under the action of specific catalytic systems, essentially vinyl and ring-opening polymerization, both reaction types allowing the manufacture of distinct products with wide applicability in modern technologies. The comprehensive data available on this subject are logically and systematically selected and reviewed throughout 18 chapters, according to the basic catalytic processes involved, types of monomers and catalysts employed, reaction conditions and application fields. The modern trends in design of chiral metallocene catalysts, well-defined living metathesis catalysts, catalysts tolerant toward functionalities and water systems are highlighted. The book discusses in detail the relevant aspects of these processes including reaction thermodynamics, kinetics, mechanisms and stereochemistry and correlates the structure of produced polymers with their chemical and physical-mechanical properties. Related important topics include Ziegler-Natta polymerization of olefins and dienes, atom transfer radical polymerization of vinyl compounds, metathesis of olefins and acetylenes, acyclic diene metathesis reaction, carbonyl olefination reaction, metathesis polymerization of acetylenes, metathesis degradation of polymers and ring-opening polymerization of heterocycles. Special emphasis is laid upon the manufacture of commerical products, new polymers and copolymers of potential interest for industry and design and synthesis of speciality polymers with particular structures and architectures and desired properties. The book critically evaluates the most recent achievements reported in this field and outlines the modern trends on the research and application of the catalytic processes for cycloolefin polymerization. For the first time, comprehensive information about the published data on the subject up to now is provided for both academic and industrial researchers working in the areas of polymer chemistry, organic and organometallic chemistry, surface science and catalysis, petrochemistry and chemical engineering. This stimulating book offers an enlightening introduction and a quick documentation on the subject as well as a solid background in this field. Moreover, the work offers a wealth of useful information for specialists applying polymers in various scientific and industrial areas.