Reactive Modifiers For Polymers

Chemical modification of polymers by reactive modifiers is no longer an academic curiosity but a commercial reality that has delivered a diverse range of speciality materials for niche markets: reactively grafted styrenic alloys, maleated polyolefins, super-tough nylons, silane modified and moisture-cured polyolefins, and thermoplastic elastomers, are but few exam ples of commercial successes. Although the approach of reactive modification of polymers has been largely achieved either in solution or in the solid state (through in situ reactions in polymer melts), it is the latter route that has attracted most attention in the last two decades owing to its flexibility and cost-effective ness. This route, referred to as reactive processing, focuses on the use of suitable reactive modifier(s) and the adoption of conventional polymer processing machinery, an extruder or a mixer, as a chemical reactor, to perform in situ targeted reactions for chemical modification of preformed polymers. This relatively simple, though scientifically highly challenging, approach to reactive modification offers unique opportunities in exploiting various reactive modifiers for the purpose of altering and transforming in a controlled manner the properties of preformed commercial polymers into new/speciality materials with tailor-made properties and custom-designed performance for target applications. Such an economically attractive route constitutes a radical diversion away from the traditional practices of manufacturing new polymers from monomers which involves massive in vestments in sophisticated technologies and chemical plants.

Developments in machinery, materials and applications are outlined in the cond104 of commercial considerations and advances in fundamental understanding. The principles and benefits of polymer modification and blending via reactive extrusion are explained. A b257 of novel techniques which have developed out of the major reactive processes are also described. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database provides useful references for further reading.

"Outlines the benefits of using additives-individually or in combination-to modify the properties and processability of pure polymers, and discusses easy-to-understand theory and practical applications for immediate economic and performance improvements."

Reactive Polymers: Fundamentals and Applications: A Concise Guide to Industrial Polymers, Third Edition introduces engineers and scientists to a range of reactive polymers and then details their applications and performance benefits. Basic principles and industrial processes are described for each class of reactive resin (thermoset), as well as additives, the curing process, applications and uses. The initial chapters are devoted to individual resin types (e.g., epoxides, cyanacrylates), followed by more general chapters on topics such as reactive extrusion and dental applications. Injection molding of reactive polymers, radiation curing, thermosetting elastomers, and reactive extrusion equipment are covered as well. The use of reactive polymers enables manufacturers to make chemical changes at a late stage in the production process, which, in turn, cause changes in performance and properties. Material selection and control of the reaction are essential to achieve optimal performance. Material new to this edition includes the most recent developments, applications and commercial products for each chemical class of thermosets, as well as sections on fabrication methods, reactive biopolymers, recycling of reactive polymers and case studies. Covers the basics and most recent developments, including reactive biopolymers, recycling of reactive polymers, nanocomposites and fluorosilicones Offers an indispensable guide for engineers and advanced students alike Provides extensive literature and patent review Reflects a thorough review of all literature published in this area since 2014 Features revised and updated chapters to reflect the latest research in reactive polymers

Reactive and functional polymers are manufactured with the aim of improving the performance of unmodified polymers or providing functionality for different applications. These polymers are created mainly through chemical reactions, but there are other important modifications that can be carried out by physical alterations in order to obtain reactive and functional polymers. This volume presents a comprehensive analysis of these reactive and functional polymers. Reactive and Functional Polymers Volume Two considers the coupling, crosslinking and grafting reactions to improve the compatibility of reactive and functional polymer blends. In this book, world-renowned researchers have participated, including Dr. Sabu Thomas (Editor-in-chief for the journal ‘Nano-Structures & Nano-Objects’). With its comprehensive scope and up-to-date coverage of issues and trends in Reactive and Functional Polymers, this is an outstanding book for students, professors, researchers and industrialists working in the field of polymers and plastic materials.

Engineering or specialty elastomers are the stalwart materials of the rubber industry. They are high volume and medium priced elastomers, often employed in demanding applications, such as the automotive, industrial, medical and electrical industries. The Engineering Elastomers 2003 conference had an exciting series of papers from authors in both Europe and the USA, addressing the opportunities for growth in engineering elastomers, as well as the challenges to producers and users operating in a rapidly changing competitive environment. Session 1 Market Review; Session 2 Advances in Compounding and Production; Session 3 Advances in Elastomers; Session 4 Additives and Vulcanising Agents; Session 5: Technologies and Materials Analysis; Session 6: Developments In Production And Processing Technologies And Equipment; Session 7 Inter-materials Competition; Session 8 Developments In End Use Applications

In the ten years since the first edition appeared the renaissance in Free Radical Polymerization has continued to gain momentum. In this second revised edition, the authors critically evaluate the findings of the last decade, where necessary reinterpreting earlier work in the light of these ideas, and point to the areas where current and future research is being directed. The overall aim is to provide a framework for further extending our understanding of free radical polymerization and create a definable link between synthesis conditions and polymer structure and properties. The authors have updated all chapters, and added many new references and two new chapters to reflect the significant advances made in radical polymerization. One new chapter has been devoted to the area of living radical polymerization which is now responsible for a very substantial fraction of the papers in the field. In addition to offering polymers with unique compositions and properties not achievable with other methodologies, living radical polymerization has also been combined with other processes and mechanisms to give structures and architectures that were not previously thought possible. The developments are seen to have great application particularly in the emerging areas of electronics, biotechnology and nanotechnology. * An excellent text suitable for graduates in polymer chemistry and a reference source for researchers and practitioners in radical polymerization * Seven chapters revised and updated with eight years of new research * A new chapter devoted to the growing field of living radical polymerization