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Author : Afsaneh Nabifar
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book INVESTIGATIONS OF KINETIC ASPECTS IN NITROXIDE-MEDIATED RADICAL POLYMERIZATION OF STYRENE. written by Afsaneh Nabifar and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mingxiao Zhou
Publisher :
ISBN 13 :
Total Pages : 111 pages
Book Rating : 4.:/5 (613 download)
Download or read book Investigation of Kinetics of Nitroxide Mediated Radical Polymerization of Styrene with a Unimolecular Initiator written by Mingxiao Zhou and published by . This book was released on 2009 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the results of a study on the kinetics of nitroxide-mediated radical polymerization of styrene with a unimolecular initiator. The primary objective was to obtain a more comprehensive understanding of how a unimolecular-initiating system controls the polymerization process and to clarify the effects of various reaction parameters. Previous work in this field has met with some difficulties in the initiator synthesis, such as low yield and inconsistency of molecular weight. These problems were overcome by adjusting reaction conditions and procedures. Better yields of initiator with consistent molecular weight were produced by the improved methods. Control of polymerization rate and polymer molecular weight in unimolecular nitroxide-mediated radical polymerization was studied by looking at the effects of the three main factors: initiator concentration, temperature, and the initiator molecular weight on polymerization rate, molecular weight and polydispersity. Results indicated that increasing the initiator concentration had no effect on polymerization rate at low conversion, but led to lower polymerization rate at high conversion; higher initiator concentration led to lower molecular weight of the resulting polymer. It was also found that temperature significantly increased the polymerization rate, yet had no effect on number-average molecular weight, Mn, at low conversion, while it caused a plateau at high conversion levels; there was no effect on weight-average molecular weight, Mw, through the whole conversion range. In addition, increasing initiator molecular weight was found to have no effect on either polymerization rate or molecular weight. The experimental molecular weights of the unimolecular system were compared to theoretical molecular weights based on ideal controlled radical polymerization (CRP). The results were found to be close to the theoretical values. This confirmed the advantages of the unimolecular system, namely, the degree of control over molecular weight was nearly ideal (for certain conditions); and molecular weights could thus be predicted by simply following general rules relating to CRP mechanisms.
Author : Didier Gigmes
Publisher : Royal Society of Chemistry
ISBN 13 : 1782622632
Total Pages : 513 pages
Book Rating : 4.7/5 (826 download)
Download or read book Nitroxide Mediated Polymerization written by Didier Gigmes and published by Royal Society of Chemistry. This book was released on 2015-12-08 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitroxide-mediated polymerization is an important branch of controlled radical polymerization, which has revolutionised the preparation of polymer architectures and compositions. This is the first book dedicated to the topic and covers the history and development of nitroxide-mediated polymerization, as well as current techniques of academic and industrial interest. Nitroxide-Mediated Polymerization gathers together and comprehensively discusses all aspects of nitroxide-mediated polymerization, from fundamental principles through to industrial applications. A specific focus will be dedicated to the principle of the technique, its kinetics aspects, the synthesis of the controlling agents, the range of polymerizable monomers, its potential for preparation of advanced organic and hybrid materials and its status at the industrial stage. The book details all stages of the field, with chapters detailing the history, recent developments and novel materials in this fast developing area. Edited and written by expert researchers working in the field and academia this book focuses on highlighting the kinetic aspects of nitroxide-mediated polymerization, providing insight into the kinetics that can sometimes be hard to follow in published papers. The book will be of interest to polymer chemists and materials scientists at graduate level and above.
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (227 download)
Download or read book Kinetic Investigation of the Atom Transfer Radical Polymerization of Styrene in Homogeneous Systems written by and published by . This book was released on 1996 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Controlled/'Living' radical polymerization allows for the preparation of complex polymer architectures, end functional polymers and block copolymers. Recently, we reported atom transfer radical polymerization (ATRP), a novel route to the controlled - 'Living' - radical polymerization in which polymers with predetermined molecular weight up to Mn =100,000 and polydispersity as narrow as 1.05 have been obtained. In this paper, the kinetic scheme of atom transfer radical polymerization of styrene under homogeneous conditions is described. The polymerization was determined to be first order with respect to the concentration of monomer, initiator and Cu(I) halide. From the effect of the ratio of ligand to Cu(I) halide, possible active copper complex was proposed.
Author : Michael Buback
Publisher : John Wiley & Sons
ISBN 13 : 3527320563
Total Pages : 270 pages
Book Rating : 4.5/5 (273 download)
Download or read book Radical Polymerization written by Michael Buback and published by John Wiley & Sons. This book was released on 2007-07-16 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IUPAC-sponsored International Symposium on "Radical Polymerization: Kinetics and Mechanism" was held in Il Ciocco (Italia) during the week September 3-8, 2006. It was the fourth within the series of so-called SML conferences, which are the major scientific forum for addressing kinetic and mechanistic aspects of free-radical polymerization and of ontrolled radical polymerization. Top international authors like K. Matyjaszewski, T. P. Davis, T. Fukuda and others present their latest research. The five major themes covered were: Fundamentals of Free-Radical Polymerization, Heterogeneous Polymerization, Controlled Radical Polymerization, Polymer Reaction Engineering, and Polymer Characterization. SML IV again marked an important step forward toward the better understanding of the kinetics and mechanism of radical polymerization, which is extremely relevant for both conventional and controlled radical polymerization and for people in academia as well as in industry.
Author : Aaron Nilsen
Publisher :
ISBN 13 :
Total Pages : 1088 pages
Book Rating : 4.:/5 (71 download)
Download or read book The Design, Synthesis and Testing of N-alkoxy Amine Initiators for Nitroxide-mediated 'living' Free Radical Polymerization written by Aaron Nilsen and published by . This book was released on 2005 with total page 1088 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Didier Gigmes
Publisher : Royal Society of Chemistry
ISBN 13 : 1782620613
Total Pages : 512 pages
Book Rating : 4.7/5 (826 download)
Download or read book Nitroxide Mediated Polymerization written by Didier Gigmes and published by Royal Society of Chemistry. This book was released on 2016 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book dedicated to nitroxide-mediated polymerization and covers the history and development of NMP, as well as current techniques of academic and industrial interest.
Author :
Publisher : Cuvillier Verlag
ISBN 13 : 3736919913
Total Pages : 176 pages
Book Rating : 4.7/5 (369 download)
Download or read book Radical Polymerization: Kinetics and Mechanism written by and published by Cuvillier Verlag. This book was released on 2006-08-22 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alastair M. North
Publisher : Pergamon
ISBN 13 :
Total Pages : 144 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Kinetics of Free Radical Polymerization written by Alastair M. North and published by Pergamon. This book was released on 1966 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jose Asua
Publisher : John Wiley & Sons
ISBN 13 : 0470691425
Total Pages : 392 pages
Book Rating : 4.4/5 (76 download)
Download or read book Polymer Reaction Engineering written by Jose Asua and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers are an example of “products-by-process”, where the final product properties are mostly determined during manufacture, in the reactor. An understanding of processes occurring in the polymerization reactor is therefore crucial to achieving efficient, consistent, safe and environmentally friendly production of polymeric materials. Polymer Reaction Engineering provides the link between the fundamentals of polymerization kinetics and polymer microstructure achieved in the reactor. Organized according to the type of polymerization, each chapter starts with a description of the main polymers produced by the particular method, their key microstructural features and their applications Polymerization kinetics and its effect on reactor configuration, mass and energy balances and scale-up are covered in detail. The text is illustrated with examples emphasizing general concepts, principles and methodology. Written as an authoritative guide for chemists and chemical engineers in industry and academe, Polymer Reaction Engineering will also be a key reference source for advanced courses in polymer chemistry and technology.
Author : Yashwant V. Pathak
Publisher : John Wiley & Sons
ISBN 13 : 1119649978
Total Pages : 388 pages
Book Rating : 4.1/5 (196 download)
Download or read book Sustainable Nanotechnology written by Yashwant V. Pathak and published by John Wiley & Sons. This book was released on 2022-03-29 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable Nanotechnology A robust examination of the use of nanotechnology in the manufacture of sustainable products In Sustainable Nanotechnology: Strategies, Products, and Applications, a team of distinguished researchers delivers a comprehensive and up-to-date exploration of nanotechnology applications in environmental, pharmaceutical, and engineering products in the context of global sustainability. The book offers balanced coverage of the benefits and risks of nanotechnology. Divided into three parts, the editors have included contributions from leading scholars discussing sustainability, toxicological impacts, and nanomaterial-based adsorbents. This edited volume helps readers understand how nanotechnology and nanomaterials apply in different global sustainability challenges. It also discusses models for understanding the lifecycle and risk assessments of manufactured nanomaterials. Case studies are included to explore such topics as design, remediation, and technology assessment. The book also provides: Thorough introductions to nanotechnology-based research priorities for global sustainability and the challenges and opportunities of modern, sustainable nanotechnology Comprehensive explorations of improving the sustainability of bio-based products with nanotechnology and the improvement of the environmental sustainability of biopolymers using nanotechnology Practical discussions of nanotechnology-based polymers for drug delivery applications In-depth examinations of green nanotechnology-driven drug delivery systems Perfect for nanotechnology-focused professionals, sustainability experts, biomedical experts, and pharmaceutical industry practitioners, Sustainable Nanotechnology: Strategies, Products, and Applications will also earn a place in the libraries of neuroscientists, bioengineering professionals, and those involved in neuroprosthetic engineering.
Author : Gertz I. Likhtenshtein
Publisher : John Wiley & Sons
ISBN 13 : 352762175X
Total Pages : 438 pages
Book Rating : 4.5/5 (276 download)
Download or read book Nitroxides written by Gertz I. Likhtenshtein and published by John Wiley & Sons. This book was released on 2008-06-25 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering all aspects of this field, this volume also critically discusses recent results obtained with the use of nitroxides, while providing an analysis of future developments. Written by a group of scientists with long-term experience in investigating the chemistry, physicochemistry, biochemistry and biophysics of nitroxides, the book is not intended as an exhaustive survey of each topic, but rather a discussion of their theoretical and experimental background, as well as recent advances. The first four chapters expound the general theoretical and experimental background and the advantages of modern ESR technique. Chapter 5 focuses on fundamentals and recent results in the preparation and basic chemical properties, while the next two chapters briefly outline principles and current results in nitroxides as spin probes, and as redox probes and spin traps. These chapters form the basis for the subsequent more detailed studies of nitroxides in physicochemistry, while the final chapters concentrate on the advantages of magnetic materials on the basis of nitroxides. Finally, the concluding chapter considers the rapidly developing field of biomedical, therapeutic and clinical applications. With more than 1,100 references to essential literature, this volume provides fundamental knowledge of instrumentation, data interpretation, capacity and recent advantages of nitroxide applications, allowing readers to understand how nitroxides can help them in solving their own problems.
Author : Peter A. Lovell
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 858 pages
Book Rating : 4.3/5 (91 download)
Download or read book Emulsion Polymerization and Emulsion Polymers written by Peter A. Lovell and published by John Wiley & Sons. This book was released on 1997-04-03 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emulsion Polymerization and Emulsion Polymers Edited by Peter A. Lovell Manchester Materials Science Centre, UMIST, Manchester, UK and Mohamed S. El-Aasser Emulsion Polymers Institute and Department of Chemical Engineering, Lehigh University, Bethlehem, PA, USA Emulsion polymerization is a technologically and commercially important reaction used to produce synthetic polymers and latexes for a wide range of applications. It is the basis of a massive global industry that is expanding due to the versatility of the reaction and the greater realization of the ability to control properties of the polymer latexes produced. Emulsion Polymerization and Emulsion Polymers provides an up-to-date treatment of both academic and industrial aspects of the subject in a single self-contained volume. Established knowledge is integrated with latest developments and introductory chapters to give a state-of-the-art summary which is also suitable as a broad based introduction to the field. The individual chapters have been written by specialists from academia and industry and are presented in a way which ensures that the book will be of equal value to experienced researchers and students.
Author : William G. Skene
Publisher :
ISBN 13 :
Total Pages : 718 pages
Book Rating : 4.:/5 (61 download)
Download or read book Investigation of Nitroxide Mediated Thermal and Photochemical Reactions of Living Free Radical Polymerization written by William G. Skene and published by . This book was released on 2000 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Wayne F. Reed
Publisher : John Wiley & Sons
ISBN 13 : 0470917385
Total Pages : 493 pages
Book Rating : 4.4/5 (79 download)
Download or read book Monitoring Polymerization Reactions written by Wayne F. Reed and published by John Wiley & Sons. This book was released on 2014-01-21 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offers new strategies to optimize polymer reactions With contributions from leading macromolecular scientists and engineers, this book provides a practical guide to polymerization monitoring. It enables laboratory researchers to optimize polymer reactions by providing them with a better understanding of the underlying reaction kinetics and mechanisms. Moreover, it opens the door to improved industrial-scale reactions, including enhanced product quality and reduced harmful emissions. Monitoring Polymerization Reactions begins with a review of the basic elements of polymer reactions and their kinetics, including an overview of stimuli-responsive polymers. Next, it explains why certain polymer and reaction characteristics need to be monitored. The book then explores a variety of practical topics, including: Principles and applications of important polymer characterization tools, such as light scattering, gel permeation chromatography, calorimetry, rheology, and spectroscopy Automatic continuous online monitoring of polymerization (ACOMP) reactions, a flexible platform that enables characterization tools to be employed simultaneously during reactions in order to obtain a complete record of multiple reaction features Modeling of polymerization reactions and numerical approaches Applications that optimize the manufacture of industrially important polymers Throughout the book, the authors provide step-by-step strategies for implementation. In addition, ample use of case studies helps readers understand the benefits of various monitoring strategies and approaches, enabling them to choose the best one to match their needs. As new stimuli-responsive and "intelligent" polymers continue to be developed, the ability to monitor reactions will become increasingly important. With this book as their guide, polymer scientists and engineers can take full advantage of the latest monitoring strategies to optimize reactions in both the lab and the manufacturing plant.
Author : Stefan Antonius Franciscus Bon
Publisher :
ISBN 13 : 9789038606880
Total Pages : 176 pages
Book Rating : 4.6/5 (68 download)
Download or read book Debut written by Stefan Antonius Franciscus Bon and published by . This book was released on 1998 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J.M.G. Cowie
Publisher : Springer Science & Business Media
ISBN 13 : 1475791399
Total Pages : 292 pages
Book Rating : 4.4/5 (757 download)
Download or read book Alternating Copolymers written by J.M.G. Cowie and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examination of the early literature attests to the fact that the study of copolymerization was initiated when polymer science was in its infancy. It has continued to grow to a subject of major importance and has been a source of interest to both academic and industrialist alike. The wide spectrum of structures and properties available in the statistical copolymer has made this a fruitful field of exploration, but one particular and more restricted form which has held its own fascination for many is the limiting case of the strictly alternating copolymer. This is formed, in the ideal situation, when two monomers in a reaction mixture add consecutively to create a polymer chain with a regular {ABABAB} structure, irrespective of the monomer feed ratio. When this happens the resulting copolymer will always have the same composition, a feature which can be advantageous but also somewhat restrictive, as the ability to vary the properties is then limited. Within a series entitled Speciality Polymers it seems appropriate then to deal with this subject, particularly as no previous attempt has been made to draw together the various facets of alternating copolymerization into one volume. It also seems timely to present a more unified picture of the subject which will also illustrate the progress made.
