Download or read book Control of Phase Structure in Polymer Blends written by Donald R. Paul and published by . This book was released on 1988 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer blending is presently in a state of rapid scientific and commercial development. Another related physical approach is polymer-polymer composites in the form of fibers, film, and sheet materials often made via co-extrusion technology. Polymer blends can be divided into two major classes based on their thermodynamic phase behavior. Miscible blends are homogeneous to the polymer segmental level and a major factor is the energetics of segmental interaction. The first section outlines some of the incentives for polymer blending and gives examples of the types of problems that can be solved by this route. In every case, the property relationships for blends depend critically on control of phase structure. Therefore, subsequent sections will deal with some of the important scientific issues in this area. The first of these is the selection or design of components when a homogeneous or miscible mixture is needed. The second involves phase separated systems where improved interfacial adhesion and morphological control are required, i.e., the concept of (compatibilization). Copolymerization into random, block, or graft structures is shown to be a powerful way of dealing with these problems. (aw).
Download or read book Nanostructured Polymer Blends written by Juan Rodríguez-Hernández and published by Elsevier Inc. Chapters. This book was released on 2013-11-28 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design of polymer blends constitutes an interesting alternative to obtaining micro- and nanostructured surfaces. The cost is reasonable and it is free from time-consuming procedures. Blending of polymers can yield materials with unprecedented properties that cannot be provided otherwise by using a single polymer. The free surface topography of polymer blend films, often related to phase domain structure, is critical to the applications. Two main aspects need to be considered in the preparation of multistructured blends: the interfaces involved and the morphology to be obtained. The control of these two aspects depends further on materials-related parameters involving the composition of the blend, the interfacial tension or viscosity ratio, and the processing conditions related to the temperature, time, or intensity of mixing, among others. Both domain structure and topography of the blend films have garnered increasing interest over the past decade. This chapter describes the nanomicrostructures formed at the polymer surface from polymer blends. Despite the crucial role that surfaces play in the final application of the material, up to now most of the studies concerning polymer blends have been related to the control of the mechanical properties (toughness, stiffness, thermal expansion, etc.), their barrier properties, or the electrical conductivity. This chapter focuses on the analysis of the structured polymer surfaces and thin films, giving an overview of the role of these structures on the final application. The principles of phase separation and the resulting structures formed are briefly discussed, followed by a wide overview of the possibilities of producing stimuli-responsive interfaces by introducing, among other things, pH- or temperature-responsive polymers within the blend. Finally, we look at how using particular preparation conditions and/or self-assembly of block copolymers, the formation of films and surfaces with hierarchical order length-scales can be induced. We also examine the main areas in which multiscale-ordered interfaces obtained from polymer blends have been applied.
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 Functional Polymers written by David E. Bergbreiter and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph contains manuscripts, poster abstracts and summary statements representing the contributions of a group of scientists who participated in the sixth annual Texas A&M Industry-University Cooperative Chemistry Program (IUCCP) at Texas A&M University in College Station, Texas, March 22-24, 1988. This symposium on "Functional Polymers" was organized by a university-industrial steering committee consisting of Dr. D. Keene, Hoechst Celanese; Dr. D. E. McLemore, Dow Chemical Company; Dr. B. Frushour, Monsanto Company; Dr. S. Corley, Shell Development; Dr. F. Hoffstadt, BPAmerica; Dr. D. E. Bergbreiter, Texas A&M University; Dr. C. A. J. Hoeve, Texas A&M University; Dr. C. R. Martin, Texas A&M University; Dr. A. Clearfield, Texas A&M University; and Dr. A. E. Martell, Texas A&M University. The symposium itself was generously supported by the industrial companies participating in the IUCCP program. These sponsoring chemical companies include; Shell Development Company, Dow Chemical Company, BPAmerica, Monsato Company and Hoechst Celanese. The choice of "Functional Polymers" as the subject for this symposium reflects the rapid developments occurring in the broad field of polymer science and the potential for using polymeric derivatives in many new exciting and potentially profitable applications. The invited papers and submitted posters reflect the diversity of this field and include many different topics ranging from biomedical applications of polymers to conducting polymers to use of polymers as lithographic masks and recording media. General topics included in the symposium were: photoresponsive polymers, polymer blends, electronically conductive polymers, polymers catalysts, biomedical polymers and membrane transport and permeability.
Download or read book The Phase Structure and Phase Behavior of Polymer Blends Undergoing Simple Shear Flow written by Zheng Chen and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Polymer Blends written by Sabu Thomas and published by John Wiley & Sons. This book was released on 2015-02-09 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling the gap for a reference dedicated to the characterization of polymer blends and their micro and nano morphologies, this book provides comprehensive, systematic coverage in a one-stop, two-volume resource for all those working in the field. Leading researchers from industry and academia, as well as from government and private research institutions around the world summarize recent technical advances in chapters devoted to their individual contributions. In so doing, they examine a wide range of modern characterization techniques, from microscopy and spectroscopy to diffraction, thermal analysis, rheology, mechanical measurements and chromatography. These methods are compared with each other to assist in determining the best solution for both fundamental and applied problems, paying attention to the characterization of nanoscale miscibility and interfaces, both in blends involving copolymers and in immiscible blends. The thermodynamics, miscibility, phase separation, morphology and interfaces in polymer blends are also discussed in light of new insights involving the nanoscopic scale. Finally, the authors detail the processing-morphology-property relationships of polymer blends, as well as the influence of processing on the generation of micro and nano morphologies, and the dependence of these morphologies on the properties of blends. Hot topics such as compatibilization through nanoparticles, miscibility of new biopolymers and nanoscale investigations of interfaces in blends are also addressed. With its application-oriented approach, handpicked selection of topics and expert contributors, this is an outstanding survey for anyone involved in the field of polymer blends for advanced technologies.
Download or read book Polymer Blends Handbook written by L. A. Utracki and published by . This book was released on 2014-01-31 with total page 1800 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by an international group of highly respected contributors, this fundamental reference work covers all aspects of polymer blends: science, engineering, technology and applications.
Download or read book Development of the phase structure in immiscible polymer blends written by Ivan Fortelný and published by . This book was released on 2005 with total page 31 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. This book was released on 2009-09-02 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toughened Plastics written by C. Bucknall and published by Springer. This book was released on 2013-12-19 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rheology of Polymer Blends and Nanocomposites written by Sabu Thomas and published by Elsevier. This book was released on 2019-09-08 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rheology of Polymer Blends and Nanocomposites: Theory, Modelling and Applications focuses on rheology in polymer nanocomposites. It provides readers with a solid grounding in the fundamentals of rheology, with an emphasis on recent advancements. Chapters explore potential future applications for nanocomposites and polymer blends, giving readers a thorough understanding of the specific features derived from rheology as a tool for the study of polymer blends and nanocomposites. This book is ideal for industrial and academic researchers in the field of polymer blends and nanocomposites, but is also a great resource for anyone who wants to learn about the applications of rheology. Sets out the principles of rheology as it is applied to polymer blends and nanocomposites Demonstrates how rheological techniques are best applied to different classes of nanocomposites Assesses the opportunities and major challenges of rheological approaches to polymer blends and nanocomposites
Download or read book Compatibilization of Polymer Blends written by Ajitha A. R and published by Elsevier. This book was released on 2019-10-10 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compatibilization of Polymer Blends: Micro and Nano Scale Phase Morphologies, Interphase Characterization and Properties offers a comprehensive approach to the use of compatibilizers in polymer blends, examining both fundamental and advanced knowledge in the field. The book begins by introducing polymer blends, describing thermodynamics, miscibility, and phase separation, and explaining the main concepts of compatibilization. Other sections cover theoretical approaches for nearly compatible blends, incompatible blends, nanofillers, physical compatibilization, reactive compatibilization, morphological and structural characterization, and physico-mechanical characterization. Finally, key application areas are covered, including biomedical applications, packaging and automobile engineering. While this book will be a highly valuable reference source for academics, researchers and postgraduate students interested in polymer blends, it will also be ideal for anyone involved in the fields of polymer science, polymer chemistry, polymer physics, materials science, scientists, R&D professionals, and engineers in involved in the development or engineering of polymer products. Offers detailed and systematic coverage of essential and advanced topics relating to the compatibilization of polymer blends Presents a critical analysis of the effect of compatibilization on morphology and thermal, mechanical, electrical and viscoelastic properties of polymer blends Draws on novel studies and state-of-the-art research, discussing the latest issues and developments
Download or read book Phase Transition in Polymer Blends and Structure of Ionomers and Copolymers written by and published by . This book was released on 1993 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main thrust of the program in the past 3 years are summarized: SAXS instrumentation development; structure and dynamics of macro- and supra-molecules, phase transitions in polymer blends and solutions, structure of ionomers, and fractals and anisotropic systems.
Download or read book Nanostructured Polymer Blends written by Sabu Thomas and published by William Andrew. This book was released on 2013-11-28 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 30% of commercial polymers are blends or alloys or one kind or another. Nanostructured blends offer the scientist or plastics engineer a new range of possibilities with characteristics including thermodynamic stablility; the potential to improve material transparency, creep and solvent resistance; the potential to simultaneously increase tensile strength and ductility; superior rheological properties; and relatively low cost. Nanostructured Polymer Blends opens up immense structural possibilities via chemical and mechanical modifications that generate novel properties and functions and high-performance characteristics at a low cost. The emerging applications of these new materials cover a wide range of industry sectors, encompassing the coatings and adhesives industry, electronics, energy (photovoltaics), aerospace and medical devices (where polymer blends provide innovations in biocompatible materials). This book explains the science of nanostructure formation and the nature of interphase formations, demystifies the design of nanostructured blends to achieve specific properties, and introduces the applications for this important new class of nanomaterial. All the key topics related to recent advances in blends are covered: IPNs, phase morphologies, composites and nanocomposites, nanostructure formation, the chemistry and structure of additives, etc. Introduces the science and technology of nanostructured polymer blends – and the procedures involved in melt blending and chemical blending to produce new materials with specific performance characteristics Unlocks the potential of nanostructured polymer blends for applications across sectors, including electronics, energy/photovoltaics, aerospace/automotive, and medical devices (biocompatible polymers) Explains the performance benefits in areas including rheological properties, thermodynamic stablility, material transparency, solvent resistance, etc.
Download or read book Polymer Blends written by Ezio Martuscelli and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multicomponent polymeric systems, or polymeric blends, have recently created considerable interest and they represent a new and important challenge for research. These systems have already become technologically important, but the prospects for their applications have by no means been exhausted. For thermodynamic reasons polymer blends do not usually form homogeneous mixtures but exhibit micro or macrophase separation. This incompatibility has some inherent advantages as varying the composition and the processing conditions, materials with different structures and morphologies can be obtained whose properties may be superior to those of one of the components e. g. high impact resistant plastics. Investigations of multicomponent polymer systems constitute a new branch of macromolecular science which now claims as much interest as the behaviour of dilute solutions, crystallization, statistics of chain~~ tacticity, and single crystal formation did a few years ago. The complexity of the problems related to control led preparation and properties studies of mUlticomponent polymer systems is such that it is often more practicable to conduct them on an international basis. The aim of the first Joint Italian-Polish Seminar on Multicomponent Polymer Systems was to discuss recent results obtained in that field in both countries. As the range of topics to be covered was fairly wide, we thought it advisable to invite scientists from other countries to share with us some aspects of their own studies.
Download or read book Nanostructured Polymer Blends written by Oluranti Sadiku-Agboola and published by Elsevier Inc. Chapters. This book was released on 2013-11-28 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years there has been a great deal of research on the subject of nanostructured materials. Structure across a range of length scales has been of particular interest. Theoretical modeling of nanostructured formation in polymer blends has gained considerable momentum due to the increased interest in nanostructures, such as nanoparticles, nanotubes, nanopores, and so on. Polymers show universal behavior on long length and time scales. Usually, the size of an ideal polymer is calculated from the freely jointed polymer chain model. The solubility and interaction parameters in nanostructured polymer blends are reviewed. Several computer simulation models for predicting mechanical, electrical, and thermal properties of semicrystalline polymer and nanostructured polymer blends are discussed. Modeling of polymer in solution and the morphological control of nanostructured blends are also reviewed. Further development of nanostructured polymer blends depends on the fundamental understanding of their hierarchical structure and behavior, which requires multiscale modeling and simulation to provide various lengths and time scales. Atomistic-based simulation such as molecular dynamics, Monte Carlo, and molecular mechanics are addressed for the multiscale modeling of nanostructured polymer blends for material design. A mathematical model based on the Cahn–Hilliard nonlinear theory of phase separation is also discussed.
