Download or read book Phase Separation Dynamics of Homopolymer homopolymer diblock Copolymer Blends written by Su Nee Tan and published by . This book was released on 1998 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Homogenizing Properties of Diblock Polymers in Blends of Corresponding Homopolymers written by Mark A. Hartney and published by . This book was released on 1983 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of blends was prepared form homopolymers and diblock coploymers of 1,2-polybutadiene and 1,4-polybutadiene. Samples were studied by dynamic mechanical analysis and transmission electron microscopy to determine whether a homogeneous or heterogeneous morphology existed. Although blends of the homopolymers exhibit phase separation, inclusion of an appropriate amount of a diblock polymer can lead to a homogeneous morphology. The materials examined covered a wide range of molecular weight, composition, and diblock copolymer fraction in the blend, enabling an experimental phase diagram to be determined. These findings are compared with current theories of phase behavior for blends of diblock copolymers and homopolymers. (Author).
Download or read book Thermodynamics of Homopolymer homopolymer diblock Copolymer Blends written by Wayne William Maurer and published by . This book was released on 1998 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Homopolymer Induced Microphase Separation of a Homogeneous Diblock Copolymer written by Robert E. Cohen and published by . This book was released on 1983 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Binary polymer blends were prepared from a homogeneous diblock copolymer (1,2 polybutadiene-1,4 polybutadiene) and either of the corresponding homopolymers. Using dynamic mechanical testing and transmission electron microscopy it was shown that the 1,4B homopolymer and the copolymer form homogeneous blends; however, addition of 1,2B homopolymer induces a heterogeneous morphology when present in sufficient proportions. The nature of this homopolymer-induced microphase separation is compared to predictions of a recent theory.
Download or read book Self assembly Behavior of Block Copolymer homopolymer Blends in Thin Films written by Shuaigang Xiao and published by . This book was released on 2004 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phase Behavior of Polymer Blends written by Karl Freed and published by Springer Science & Business Media. This book was released on 2005-09-01 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Micro and Nanostructured Multiphase Polymer Blend Systems written by Charef Harrats and published by CRC Press. This book was released on 2005-09-29 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Micro- and Nanostructured Multiphase Polymer Blend Systems: Phase Morphology and Interfaces focuses on the formation of phase morphology in polymer blends and copolymers and considers various types of blends including thermosets, thermoplastics, thermoplastic vulcanizates, and structured copolymers. The book carefully debates the processing
Download or read book Phase Equilibria and Transition in Mixtures of a Homopolymer and a Block Copolymer written by R. J. Roe and published by . This book was released on 1983 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: The small-angle X-ray scattering technique is utilized to study the phase separation and phase transition occurring in the mixtures of a styrene butadiene diblock copolymer with a low molecular weight polystyrene. At low temperatures the scattering curve shows a main peak and a secondary peak indicating the presence of well-developed microdomains. As the temperature is raised the peaks gradually lose intensity. The binodal and spinodal temperatures for the transition between the ordered structure at low temperature and the disordered, homogeneous structure at high temperature are determined and found to increase with increasing amount of the added polystyrene. With increasing amount of polystyrene the main peak at first shifts toward lower angles, indicating an increased distance between microdomains. However, at concentrations beyond about 50% polystyrene, which evidently corresponds to the solubility limit of the latter in the microdomains, the peak position remains constant. The observed shift in the relative position of the secondary peak suggests that the morphology of the microdomains changes gradually from spherical to lamellar as the proportion of polystyrene is increased. With all the mixtures no evidence is found for an increase in the microdomain boundary thickness with increasing temperature.
Download or read book Block Copolymers written by Francisco Balta Calleja and published by CRC Press. This book was released on 2000-06-09 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: A summary of block copolymer chemical structures and synthesis. It discusses physical methods of characterization such as computer simulation, microhardness, dielectric spectroscopy, thermal mechanical relaxation, ultrasonic characterization, transmission electron microscopy, X-ray scattering, and NMR, among others. It also outlines rheological and processing parameters in the multiphase polymer systems with stable microstructures.
Download or read book Statistical Physics Proceedings Of The 2th Tohwa Univ International Meeting written by Michio Tokuyama and published by World Scientific. This book was released on 1998-04-04 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Statistical physics is one of the fundamental branches of modern science. It provides a useful tool constructing a bridge from the microscopic to the macroscopic world. In the last forty years, most of the extensive applications have been made successfully in a variety of fields, such as physics, chemistry, biology, materials science, and even astronomy, where many new concepts and methods have been developed.The purpose of this meeting is to provide an opportunity for young researchers in experimental, theoretical and computational fields to communicate with one another using the common language of statistical physics, and thus foster many-body interactions among themselves.
Download or read book Rheo Physics of Multiphase Polymer Systems written by Kai Sondergaard and published by CRC Press. This book was released on 1995-06-02 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: FROM THE PREFACE Almost all polymeric systems are subjected to a flow field at least once along the route between preparation and application. . . . There is also an increased interest in predictive models on phase behavior and suitable techniques for characterizing the structure of these systems when subjected to flow. Multiphase polymeric systems are particularly susceptible to flow, which may cause orientation of species, morphological changes, and phase transitions. All these events may, in turn, affect the end product properties, such as permeability, electrical conductivity, [and] mechanical properties. In processing, escalating needs have evolved for optimization and development of novel and more uniform product properties and increased productivity. In order to arrive at an understanding of processing polymeric systems under elastic flow conditions, it is convenient to analyze the basic physical mechanisms under conditions that enable development of predictive models in conjunction with controlled experimentation. . . . In recent years, the science of rheo-physics has evolved and now involves both advanced theories and experimental techniques. Rheo-physics means the rheological, morphological, and thermodynamic behavior of structured polymer systems during flow. . . . In this monograph, the rheo-optical techniques are . . . emphasized. The book gives an introduction to rheo-physics, including fundamentals of theories, and a representative selection of applications of rheo-optical techniques for analyzing multiphase systems. The chapters contain both practical advice for the new experimenter . . . as well as review material for the experienced scientist.
Download or read book SPSJ Annual Meeting written by Kōbunshi Gakkai (Japan) and published by . This book was released on 2006 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermoforming written by Muralisrinivasan Natamai Subramanian and published by John Wiley & Sons. This book was released on 2025-07-22 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive reference manual that contains essential information on thermoforming processing and technology. The field of thermoforming is experiencing rapid development driven by commercial factors; millions of tons of polymers are manufactured for use in various applications, both as commodity and specialty polymers. Building on the previous edition published about ten years ago, this edition includes new, as well as, fully revised chapters and updated information on materials and processes. The book is designed to provide practitioners with essential information on processing and technology in a concise manner. The book caters to both engineers and experts by providing introductory aspects, background information, and an overview of thermoforming processing and technology. The troubleshooting section includes flowcharts to assist in correcting thermoforming processes. “Thermoforming: Processing and Technology” offers a complete account of thermoplastics, covering properties and forming, with chapters providing perspective on the technologies involved. Readers will find it: serves as a handy knowledge source for professionals who occasionally work on thermoforming projects or need to refresh their knowledge; offers a troubleshooting guide that can help to identify and solve challenges that may arise in thermoforming processes; provides insights into process optimization, helping businesses improve efficiency, reduce waste, and enhance the quality of thermoformed products; acts as a course book to inform students about the thermoforming process. Audience The book will be of interest to mechanical, materials engineers, and process engineers who are involved in designing and optimizing thermoforming processes; professionals in the manufacturing and production industries who use thermoforming as a manufacturing method, such as in the production of plastic packaging, automotive components, and consumer goods; scientists, researchers, and students in plastics/polymer engineering and technology, materials science, polymer technology; professionals responsible for ensuring product quality and compliance with industry standards.
Download or read book Phase Relations and Miscibility in Polymer Blends Containing Copolymers written by R. J. Roe and published by . This book was released on 1986 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This article reviews the reported work on thermodynamics of polymer blends in which at least one of the components is a copolymer. Theoretical and experimental studies of miscibility and phase transition and separation behaviors in such systems are summarized. Chapter 2 deals with blends involving random copolymers, including the cases in which a random copolymer AB is mixed with either a homopolymer A, or a homopolymer C, or two homopolymers A and B. Chapter 3 deals with blends involving a block copolymer, and after giving a brief overview of systems containing a pure block copolymer alone, it reviews the blend systems containing a block copolymer AB mixed with a homopolymer A or two homopolymers A and B. Keywords: Microphase Separation; and Micelles.
Download or read book Phase Diagram of Polymer Blends Containing Block Copolymers written by R. J. Roe and published by . This book was released on 1984 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The phase transition and phase separation behavior occurring in mixtures containing an A-B block copolymer and an A homopolymer is discussed. With a pure block copolymer an order-disorder transition can be induced by raising the temperature, whereby the ordered lattice of segregated microdomains becomes unstable and give way to a homogeneous liquid structure. Small amounts of a homopolymer added to a block copolymer can be accomodated in the microdomains consisting of the same type of monomeric units, up to a solubility limit that depends on the relative length of the homopolymer and the compolymer block and on the temperature. The order-disorder transition temperature of the block copolymer is also affected by the added homopolymer. At the other extreme of concentration, spherical micelles of block compolymer is formed when a small amount of the copolymer is formed when a small amount of the compolymer is added in the bulk homopolymer, and its critical micelle concentration again depends on the relative length of the molecules and block involved and on the temperature. Measurements were made with light scattering and small-angle X-ray scattering techniques to determine the phase behavior of mixtures containing a styrene-butadiene block copolymer and either a polystyrene or a polybutadiene.
Download or read book Thermodynamics of Polymer Blends Volume I written by Anatoly E. Nesterov and published by CRC Press. This book was released on 2020-02-03 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermodynamics is an indispensable tool for developing a large and growing fraction of new polymers and polymer blends. These two volumes show the researcher how thermodynamics can be used to rank polymer pairs in order of immiscibility, including the search for suitable chemical structure of compatibilizers. Because of the great current commercial interest in this most dynamic sector of the polymer industry, there is high interest in studying their physical and mechanical properties, their structures, and the processes of their formation and manufacture. These Books are dedicated to Analysis of the Thermodynamics of Polymer Blends. Thermodynamic behavior of blends determines the compatibility of the components, their morphological features, rheological behavior, and microphase structures. As a result, the most important physical and mechanical characteristics of blends can be identified. The information in these two volumes will be useful to all those involved in polymer research, development, analysis and advanced process engineering.
Download or read book Handbook of Multiphase Polymer Systems written by Abderrahim Boudenne and published by John Wiley & Sons. This book was released on 2011-06-09 with total page 1322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiphase polymeric systems include a wide range of materials such as composites, blends, alloys, gels, and interpenetrating polymer networks (IPNs). A one-stop reference on multiphase polymer systems, this book fully covers the preparation, properties, and applications of advanced multiphase systems from macro to nano scales. Edited by well-respected academics in the field of multiphase polymer systems, the book includes contributions from leading international experts. An essential resource for plastic and rubber technologists, filler specialists and researchers in fields studying thermal and electrical properties.
