Download or read book Aspects of Group Transfer Polymerisation of Methacrylate Monomers written by Kulwant Singh Johal and published by . This book was released on 1996 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymerisation control is essential for the synthesis of polymers of specified structures. Using sequential "living" polymerisation techniques, block copolymers, where methyl methacrylate monomer is one of the components, have been synthesised by group transfer polymerisation with the following monomers: butyl methacrylate, butyl acrylate, lauryl methacrylate and octyl methacrylate. The copolymer of methyl methacrylate and octyl methacrylate has not been previously synthesised. These block copolymers were characterised using gel permeation chromatography and dynamic mechanical thermal techniques. ......
Download or read book New Methods Polymer Synthesis written by J. R. Ebdon and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most practitioners and students of polymer chemistry are familiar, in general terms at least, with the established methods of polymer synthesis - radical, anionic, cationic and coordination addition polymerization, and stepwise con densation and rearrangement polymerization. These methods are used to synthesize the majority of polymers used in the manufacture of commercially important plastics, fibres, resins and rubbers, and are covered in most introduc tory polymer chemistry textbooks and in most undergraduate and graduate courses on polymer science. Fewer polymer chemists, however, have much familiarity with more recent developments in methods of polymer synthesis, unless they have been specifically involved for some time in the synthesis of speciality polymers. These developments include not only refinements to established methods but also new mechanisms of polymerization, such as group transfer and metathesis polymerization and novel non-polymerization routes to speciality polymers involving, for example, the chemical modification of preformed polymers or the linking together of short terminally functionalized blocks.
Download or read book Phosphorus Based Polymers written by Sophie Monge and published by Royal Society of Chemistry. This book was released on 2014-05-30 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of the synthesis of different phosphorus-containing polymers and their uses in biomedical, environmental and energy applications.
Download or read book Anionic Polymerization written by Nikos Hadjichristidis and published by Springer. This book was released on 2015-09-01 with total page 1075 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents these important facts: a) The mechanism of anionic polymerization, a more than 50-year challenge in polymer chemistry, has now become better understood; b) Precise synthesis of many polymers with novel architectures (triblock, multi-block, graft, exact graft, comb, cyclic, many armed stars with multi-components, dendrimer-like hyper-branched, and their structural mixed (co)polymers, etc.) have been advanced significantly; c) Based on such polymers, new morphological and self-organizing nano-objects and supra molecular assemblies have been created and widely studied and are considered nanodevices in the fields of nano science and technology; d) New high-tech and industrial applications for polymeric materials synthesized by anionic polymerization have been proposed. These remarkable developments have taken place in the last 15 years. Anionic polymerization continues to be the only truly living polymerization system (100 % termination free under appropriate conditions) and consequently the only one with unique capabilities in the synthesis of well-defined (i.e., precisely controlled molecular weight, nearly mono-disperse molecular weight distribution, structural and compositional homogeneity) complex macromolecular architectures. This book, with contributions from the world’s leading specialists, will be useful for all researchers, including students, working in universities, in research organizations, and in industry.
Download or read book Studies of the Group Transfer Polymerisation of Methyl Methacrylate written by Ian David Rees and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Strategies for the Controlled Polymerization of Vinyl Monomers written by Marc Davis Scholten and published by . This book was released on 2008 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Advances in Mechanistic and Synthetic Aspects of Polymerization written by M. Fontanille and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 555 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to their specific properties, polymers with well-defined structures have been receiving increasing attention over the last several years. Owing to the wide variability of their properties, these specialty polymers have been used in various areas from biomedical engineering to electronics or energy applications. The synthesis of such polymers necessi tates the use of new methods of polymerization which derived from an insight into the mechanism of polymerization reactions. A NATO Advanced Research Workshop on "Frontiers in Polymerization Catalysis and Polymer Synthesis" was held in BANDOl (FRANCE) in February 1987. Its aim was to assess the new polymerization methods, as well as the latest advances in the mechanisms of conventional polymerization reactions together with their applications to the synthesis of new macromolecular structures. The financial support from the NATO Scientific Affairs Division which covered the "lecturers' accomodation and travel expenses as well as the organization charges of this event gave it international scope. Several industrial companies participate at the meeting and contributed to it success. The organizors who are also editors of these proceedings, want to express their thanks to both NATO Scientific Affairs Division and the companies present at the meeting.
Download or read book Recent Advances in Mechanistic and Synthetic Aspects of Polymerization written by M. Fontanille and published by Springer. This book was released on 1987 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Research Workshop on Frontiers in Polymerization Catalysis and Polymer Synthesis, Bandol, France, February 2-6, 1987.
Download or read book New Methods of Polymer Synthesis written by J.R. Ebdon and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most practitioners and students of polymer chemistry are familiar, in general terms at least, with the established methods of polymer synthesis - radical, anionic, cationic and coordination addition polymerization, and stepwise con densation and rearrangement polymerization. These methods are used to synthesize the majority of polymers used in the manufacture of commercially important plastics, fibres, resins and rubbers, and are covered in most introduc tory polymer chemistry textbooks and in most undergraduate and graduate courses on polymer science. Fewer polymer chemists, however, have much familiarity with more recent developments in methods of polymer synthesis, unless they have been specifically involved for some time in the synthesis of speciality polymers. These developments include not only refinements to established methods but also new mechanisms of polymerization, such as group transfer and metathesis polymerization and novel non-polymerization routes to speciality polymers involving, for example, the chemical modification of preformed polymers or the linking together of short terminally functionalized blocks.
Download or read book Template Polymerization written by Stefan Polowinski and published by ChemTec Publishing. This book was released on 1997 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Template polymerization is a new field in polymer synthesis but common practice in the biosynthesis since DNA is the most popular template or matrix on which proteins are built by living species. This field is relevant to the synthesis of polymers of controlled structure but its application goes beyond the synthesis. Materials are formulated in complex mixtures always containing components which can be regarded as templates on which other materials are formed, modified, or are interacted with. In the new product development the relevance of these phenomena is controlled by the order of addition which affects probabilities and preferences of interaction. The current publication outlines mechanisms of template polymerization, polycondensation, and copolymerization. These mechanisms, illustrated with numerous examples, indicate a range of possibilities which can be encountered in materials and utilized to modify their properties. Orientation of substrates on template and their effect on modification of their reactivity and properties such as, for example, absorption of light or water are also discussed. Several chapters contain information on these studies discussed with sufficient detail to give reader comprehensive understanding of the methods used in various research laboratories and their findings."--Publisher's description.
Download or read book Surface Active Monomers written by Mykola Borzenkov and published by Springer. This book was released on 2014-07-01 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: This brief includes information on the background of and development of synthesis of various types of surface active monomers. The authors explain the importance of utilization of surface active monomers for creation of surface active polymers and the various biomedical applications of such compounds . This brief introduces techniques for the synthesis of novel types of surface active monomers, their colloidal and polymerizable properties and application for needs of medicine and biology.
Download or read book Synthesis and Functionalization of Hyperbranched Poly methyl Methacrylate written by Chenying Zhao and published by . This book was released on 2019 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hyperbranched polymers have unique physical and chemical properties that make them interesting to people in both academia and industry. One way to make hyperbranched polymers is to use self-condensing vinyl polymerization (SCVP). Hyperbranched polymethacrylates can be prepared from methacrylate inimers (inimers are monomers that contain both initiation and polymerizable groups) by atom transfer radical polymerization (ATRP) and self-condensing vinyl polymerization (SCVP). The methyl methacrylate inimer was synthesized by reacting the carboxylic acid group of 2-bromo-3-hydroxy-2- methylpropionic acid with methacrylic acid and esterifying the alcohol group with methanol.4 This methyl methacrylate inimer was then polymerized under atom transfer radical polymerization conditions. Post-polymerization functionalization is often used to change and/or improve the properties of polymers. For hyperbranched polymers made by atom transfer radical polymerization, the halogen atoms (chlorine or bromine) remaining in the polymer backbone provide sites for post-polymerization functionalization. The halogen atoms in polymethacrylates are bonded to tertiary carbons, which are more hindered and less electrophilic than the halogen sites in hyperbranched polyacrylates, but are presumably more susceptible to cationic rearrangement. The hyperbranched poly(methyl methacrylate) is rearrangeable with heating and to give a primary bromine.
Download or read book Living and Controlled Polymerization written by Joseph Jagur-Grodzinski and published by Nova Publishers. This book was released on 2006 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: The living/controlled polymerisation techniques opened new vistas in polymer chemistry. The leading authorities in this field and its pioneers contributed chapters to this collective volume. The controlled polymerisation techniques have enabled preparation of polymers, copolymers, and block copolymers with predetermined molecular weights and narrow polydispersity, in which functional groups or biologically active molecules could be placed at well defined locations. They have also enabled preparation of advanced polymeric structures with precisely determined architectures and improved properties. Moreover, they have provided opportunities for preparation of novel polymeric materials from monomers, which before have not been suitable or accessible for such purposes. Properties of some of these polymeric materials may be significantly different from those of the existing ones. They provide opportunities for new applications. Several patents have already been approved for such speciality applications as, drug delivery, biocompatible surfaces, thermoplastic elastomers, moisture curable sealants, and so on. Many more products, based on polymers fabricated by the living/ controlled polymerisation techniques, will certainly emerge in such specialised areas as, nanotechnology, medical devices, "smart polymers", sensors , smart separation technologies, optical fibres and other optical applications, various biomaterials, etc.
Download or read book Fundamentals of Polymerization written by Broja Mohan Mandal and published by World Scientific. This book was released on 2013 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last twenty years, the field of the chemistry of polymerization witnessed enormous growth through the development of new concepts, catalysts, processes etc. Examples are: non classical living polymerizations (group transfer polymerization, living carbocationic polymerization, living radical polymerization and living ring-opening metathesis polymerization (ROMP)); new catalysts (metallocenes and late transition metal catalysts for stereospecific polymerization, Schrock and Grubbs catalyst for ROMP among others) and new processes such as miniemulsion, microemulsion polymerization and dispersion polymerization (in polar solvents). Apart from the developments in the chemistry of polymerization, methods have been developed for the evaluation of highly reliable rate constants of propagation in radical as well as cationic polymerization. All these have revolutionized the field of synthetic polymer chemistry. In the book, fundamentals of both the new and old polymerization chemistry have been dealt with. The new chemistry has been given nearly equal space along with the old.
Download or read book Silicon in Polymer Synthesis written by H.R. Kricheldorf and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon in Polymer Synthesis gives the first concise overview of silicon used for the synthesis and modification of polymers. The first section gives an introduction to the topic. The subsequent chapters detail the current status both from the basic research as well as from the industrial application points of view.
Download or read book Nitroxides written by Olivier Ouari and published by Royal Society of Chemistry. This book was released on 2021-05-13 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitroxides are versatile small organic molecules possessing a stabilised free radical. With their unpaired electron spin they display a unique reactivity towards various environmental factors, enabling a diverse range of applications. They have uses as synthetic tools, such as catalysts or building blocks; imaging agents and probes in biomedicine and materials science; for medicinal antioxidant applications; and in energy storage. Polynitroxides (polymers bearing pendant nitroxide sidechains) have been used in organic radical batteries, oxidation catalysts and in exchange reactions for constructing complex architectures. Chapters in this book cover the synthesis of nitroxides, EPR studies and magnetic resonance applications, physiochemical studies, and applications including in batteries, imaging and organic synthesis. With contributions from leaders in the field, Nitroxides will be of interest to graduate students and researchers across chemistry, physics, biology and materials science.
Download or read book Chemistry and Industry of Macromonomers written by Yuya Yamashita and published by Wepf. This book was released on 1993 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
