Download or read book Recent Advances in Polymer Blends Grafts and Blocks written by L. Sperling and published by . This book was released on 2014-01-15 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recent Advances in Polymer Blends Grafts and Blocks written by L. Sperling and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer blends, grafts, and blocks, broadly defined, encompass all of the ways in which two or more kinds of poly mer molecules can be mixed and/or joined. Because these mate rials exhibit non-linear and often synergistic properties, they have found increasing application in our technology. Their multifarious uses have, in turn, spurred new research efforts, to find yet different ways of joining two kinds of polymer molecules, with novel physical and/or mechanical behavior patterns. In August, 1973, the Polymer Division of the American Chemical Society sponsored a symposium at its meeting in Chi cago on Polymer Blends, Grafts, and Blocks. This book collects the papers presented at that symposium. Yet, it is more than just a collection of papers, for we here display the thinking and efforts of a number of top-ranking American and foreign scientists in one of the world's more active research areas. The symposium emphasized the interrelationships among synthetic detail, morphology, and physical and mechanical properties. Several novel syntheses were presented. These include oxidation resistant thermoplastic elastomers (Holden), a graft copolymer based thermoplastic elastomer (Kennedy and Smith), a cationic graft copolymer (Kennedy, Charles, and Davidson), an AB crosslinked copolymer (Bamford and Eastmond), an interpenetrating polymer network (Donatelli, Thomas, and Sperling), and simultaneous interpenetrating networks (Frisch, Klempner, Frisch, and Ghiradella). Most polymer blends, grafts, and blocks exhibit two phases. The theory of microdomain structure was discussed (Helfand). The different ways that the two molecules can be joined together was examined (Kenney), and their topology was explored (Sperling).

Download or read book Recent Advances in Polymer Blends Grafts and Blocks written by and published by . This book was released on 1974 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Polymer Alloys II written by Daniel Klempner and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term "alloy" as pertaining to polymers has become an increasingly popular description of composites of polymers, parti cularly since the publication of the first volume in this series in 1977. Polymer alloy refers to that class of macromolecular materials which, in general, consists of combinations of chemically different polymers. The polymers involved in these combinations may be hetero geneous (multiphase) or homogeneous (single phase). They may be linked together with covalent bonds between the component polymers (block copolymers, graft copolymers), linked topologically with no covalent bonds (interpenetrating polymer networks), or not linked at all except physically (polyblends). In addition, they may be linear (thermoplastic), crosslinked (thermosetting), crystalline, or amorphous, although the latter is more common. To the immense satisfaction - but not surprise - of the editors, there has been no decrease in the research and development of polymer alloys since the publication of the first volume, as evidenced by numerous publications, conferences and symposia. Continued advances in polymer technology caused by the design of new types of polymer alloys have also been noted. This technolog ical interest stems from the fact that these materials very often exhibit a synergism in properties achievable only by the formation of polymer alloys. The classic examples, of course, are the high impact plastics, which are either polyblends, block, or graft co polymers composed of a rubbery and a glassy polymer. Interpene trating polymer networks (IPN's) of such polymers also exhibit the same, or even greater, synergism.

Download or read book Polymer Blends written by D.R. Paul and published by Elsevier. This book was released on 2012-12-02 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer Blends, Volume 2 aims to show the importance of mixed polymer systems as a major branch of macromolecular science and provides a broad background of principles and practices in this field. Starting from where the first volume left off, the book covers topics in the area of polymer blends in Chapters 11-23. Areas of coverage include interpenetrating polymer networks; interfacial agents for polymer blends; rubber modification of plastics; fracture phenomena; coextruded multilayer polymer films and sheets; polymeric plasticizers; and polyolefin blends and their applications. The book is recommended for scientists, technologists, and engineers in the academe, research, and related industry, especially those who wish to be updated with its advances as a science.

Download or read book Polymer Alloys III written by Daniel Klempner and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: On this, the dawning of a new age in high technology, man is seeking answers to increasingly complex problems. We are routinely launching reusable vehicles into space, designing and building computers with seemingly limitless powers, and developing sophisticated communications systems using laser technology, fiber optics, holography, etc., all of which require new and advanced materials. Polymer alloys continue to provide new solutions to the materials problems, and remain an area of ever increasing research. Polymer alloys are mu1ticomponent macromolecular systems. The components may be all on the same chain (as in block co polymers), on side chains (as in graft copolymers), or in different molecules (as in po1yb1ends and interpenetrating polymer networks). The variety of morphologies possible and the synergistic effects on ultimate properties continue to stimulate research on new polymer alloys. More and more studies on synthesis of new alloys, the kinetics and mecha nisms of their formation, and their characterization, are taking place, as well as studies on their processing and applications. This book presents the proceedings of the Symposium on Polymer Alloys, sponsored by the American Chemical Society's Division of OrganiC Coatings and Plastics Chemistry held at the 182nd meeting of the American Chemical Society in New York, in August, 1981. The most recent efforts of scientists and engineers from allover the world in this increasingly important field are presented in the following pages.

Download or read book Phase Separated Interpenetrating Polymer Networks written by Yuri S. Lipatov and published by Springer Science & Business Media. This book was released on 2007-09-26 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Polymer Blends and Alloys Technology Volume II written by Kier Finlayson and published by Routledge. This book was released on 2018-12-13 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: From Reports in Volume 5: "Recently polymer blends have emerged as one of the most important areas of research activity in the field of polymer science and technology. Because of their satisfactory performance in meeting specific needs of the polymer industry, they have drawn considerable attention in replacing not only many conventional materials, but also some of the polymers that are in vogue. By suitably varying the blend compositions and manipulating the processing conditions, tailor-made products with a unique set of end use properties can be achieved at a much lower cost and within a shorter time than would have been necessary for the development of a new polymer. The usefulness of such blends increases with the increasing range of applications of this type of materials." (Chapter 4) "New and growing demands on polymeric materials cannot be satisfied in future by an assortment extension of basic polymers. Although the introduction of new major-use basic polymer is possible, it seems unlikely in view of current projected economic and technical considerations. On the other hand, new products based on the modification of existing polymers have and will continue to be fruitful areas for both scientific and commercial developments. The driving forces for these developments are: 1. Improved performance, 2. Reduced cost, 3. Present, pending and future legislation dealing with health and environmental issues." (Chapter 11)

Download or read book Interpenetrating Polymer Networks and Related Materials written by L.H. Sperling and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: To the surprise of practically no one, research and engineering on multi polymer materials has steadily increased through the 1960s and 1970s. More and more people are remarking that we are running out of new monomers to polymerize, and that the improved polymers of the future will depend heavily on synergistic combinations of existing materials. In the era of the mid-1960s, three distinct multipolymer combinations were recognized: polymer blends, grafts, and blocks. Although inter penetrating polymer networks, lPNs, were prepared very early in polymer history, and already named by Millar in 1960, they played a relatively low-key role in polymer research developments until the late 1960s and 1970s. I would prefer to consider the IPNs as a subdivision of the graft copolymers. Yet the unique topology of the IPNs imparts properties not easily obtainable without the presence of crosslinking. One of the objectives of this book is to point out the wealth of work done on IPNs or closely related materials. Since many papers and patents actually concerned with IPNs are not so designated, this literature is significantly larger than first imagined. It may also be that many authors will meet each other for the first time on these pages and realize that they are working on a common topology. The number of applications suggested in the patent literature is large and growing. Included are impact-resistant plastics, ion exchange resins, noise-damping materials, a type of thermoplastic elastomer, and many more.

Download or read book Polymer Blends Volume 1 written by Donald R Paul and published by Elsevier. This book was released on 2012-12-02 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer Blends, Volume 1 highlights the importance of polymer blends as a major new branch of macromolecular science. Topics range from polymer-polymer compatibility and the statistical thermodynamics of polymer blends to the phase separation behavior of polymer-polymer mixtures, transport phenomena in polymer blends, and mechanical properties of multiphase polymer blends. The optical behavior, solid state transition behavior, and rheology of polymer blends are also discussed. This book is organized into 10 chapters and begins with an overview of polymer blends, with emphasis on terminology and the effect of molecular weight on the thermodynamics of polymer blends as well as phase equilibria and transitions. The discussion then turns to the miscibility of homopolymers and copolymers, in bulk and in solution, from the experimental and theoretical viewpoints. The chapters that follow explore the statistical thermodynamics of polymer blends, paying particular attention to the Flory and lattice fluid theories, along with the phase relationship in polymer mixtures. The interfacial energy, structure, and adhesion between polymers in relation to the properties of polymer blends are considered. The final chapter examines the phenomena of low molecular weight penetrant transport. Currently accepted models for unsteady-state and steady-state permeation of polymeric materials are presented. A discussion of unsteady-state absorption and desorption behavior observed in a variety of polymer blends complements the treatment of permeation behavior. This book is intended to provide academic and industrial research scientists and technologists with a broad background in current principles and practice concerning mixed polymer systems.

Download or read book Polymer Blends and Composites written by John A. Manson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need for writing a monograph on polymer blends and composites became apparent during presentation of material on this subject to our advanced polymers class. Although the flood of important research in this area in the past decade has resulted in many symposia, edited collections of papers, reviews, contributions to scientific journals, and patents, apparently no organized presentation in book form has been forthcoming. In a closely connected way, another strong impetus for writing this monograph arose out of our research programs in the Materials Research Center at Lehigh University. As part of this effort, we had naturally compiled hundreds of references and become acquainted with many leaders in the field of blend and composite research. Perhaps the most important concept stressed over and over again is that engineering materials are useful because of their complexity, not in spite of it. Blends and composites are toughened because many modes of resistance to failure are available. Although such multimechanism processes are diffi cult to describe with a unified theory. we have presented available develop ments in juxtaposition with the experimental portions. The arguments somewhat resemble the classical discussion of resonance in organic chemistry, where molecular structures increase in stability as more electronic configura tions become available.

Download or read book Biopolymers In Drug Delivery Recent Advances and Challenges written by Michael U. Adikwu and published by Bentham Science Publishers. This book was released on 2010-05-13 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This Ebook describes the applicability of diverse natural and synthetic biopolymers and their blends in drugs, vaccines and gene delivery. It would serve as a concise body of information on biopolymers for researchers, industries and students of pharmaceu"

Download or read book Polymer Polymer Miscibility written by Olagoke Olabis and published by Elsevier. This book was released on 2012-12-02 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer–Polymer Miscibility discusses miscibility of polymeric mixtures. This book explains the theoretical and practical aspects of polymer miscibility, which has become a considerable area of research in many academic and industrial laboratories. Comprised of seven chapters, this book starts with an overview of the physical nature of the variations of the basic polymer structure. This monograph then discusses the two cases of miscible polymer blends, namely, poly(vinyl chloride) (PVC)–butadiene/acrylonitrile copolymer (NBR) and polystyrene–poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) blends. This text explores the useful and unique properties of blends of poly(vinyl chloride) and butadiene/acrylonitrile copolymer rubber. Other chapters discuss the thermodynamic theories for the phase separation of block copolymers. The reader is also introduced to other variations of chemical structure, which can result in the permanent attachment of polymers to each other through block and graft copolymers. This text also explores the feasibility of covalent bonding of polymer components. This book is intended for chemical engineers and materials scientists.

Download or read book Polymer Blends and Mixtures written by D.J. Walsh and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: A couple of years ago a small group of people began discus sing the possibility of running an advanced summer school in the area of polymer blends. There had been a number of recent advan ces in this field, and given the considerable interest in these new polymeric materials, we thought such a meeting would be well received both by industry and academia. We wanted it to contain a wide range of background science and technology and also up to date recent advances in the field. It became clear as the discus sion progressed that the experts in the field were scattered over the length and breadth of Europe and North America and thus the cost of bringing them together for a summer school would necessi tate a high registration fee which would deter many of the research workers we wished to attract. The NATO Advanced Study Institute programme enables a subject to be covered in depth and by giving generous funds to cover lecturers' costs ensures that a wide spectrum of research workers can attend. We decided to apply to NATO and this book contains the results of our request. The ASI was funded under the 'Double-Jump' Programme which is not a new Olympic event but a way of supporting courses on sub jects of direct industrial interest. The Institute was also backed by donations from several companies and approximately half those attending were from industrial organisations.

Download or read book Polymer Blends and Composites written by Muralisrinivasan Natamai Subramanian and published by John Wiley & Sons. This book was released on 2017-03-23 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because it is critically important to manufacture quality products, a reasonable balance must be drawn between control requirements and parameters for improved processing method with respect to plastics additives. An important contribution to the commercial polymer industry, Polymer Blends and Composites is one of the first books to combine plastics additives, testing, and quality control. The book is a comprehensive treatise on properties that provides detailed guidelines for selecting and using blends and composites for applications. A valuable resource for operators, processors, engineers, chemists, the book serves to stimulate those already active in natural polymer composites.

Download or read book Polymer Blends written by Marian Kryszewski and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Polymer Blends and Alloys Technology written by Kier Finlayson and published by CRC Press. This book was released on 1994-11-22 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: From Reports in Volume 5 "Recently polymer blends have emerged as one of the most important areas of research activity in the field of polymer science and technology. Because of their satisfactory performance in meeting specific needs of the polymer industry, they have drawn considerable attention in replacing not only many conventional materials, but also some of the polymers that are in vogue. By suitably varying the blend compositions and manipulating the processing conditions, tailor-made products with a unique set of end use properties can be achieved at a much lower cost and within a shorter time than would have been necessary for the development of a new polymer. The usefulness of such blends increases with the increasing range of applications of this type of materials." (Chapter 4) "New and growing demands on polymeric materials cannot be satisfied in future by an assortment extension of basic polymers. Although the introduction of new major-use basic polymer is possible, it seems unlikely in view of current projected economic and technical considerations. On the other hand, new products based on the modification of existing polymers have and will continue to be fruitful areas for both scientific and commercial developments. The driving forces for these developments are: 1. Improved performance, 2. Reduced cost, 3. Present, pending and future legislation dealing with health and environmental issues." (Chapter 11)