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Molecular Dynamics Of Additives In Polymers
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Book Synopsis Molecular Dynamics of Additives in Polymers by : Alexander Kovarski
Download or read book Molecular Dynamics of Additives in Polymers written by Alexander Kovarski and published by CRC Press. This book was released on 2023-01-27 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on the dynamical behaviour of low-molecular additives in solid polymer matrixes. It covers: types and models of molecular motion in condensed media; dependence of motional frequency on particle structure and size, temperature, volume and stress; and polymer properties and polymeric structures. Extensive analysis of common regularities of rotational and translational dynamics of molecules introduced into polymers are given. The book also includes experimental techniques for molecular mobility evaluation, and features detailed data on rotational dynamics of additives. It should be of interest to specialists in various fields of polymer physical chemistry and materials science.
Book Synopsis Molecular Dynamics of Additives in Polymers by : A. L. Kovarski
Download or read book Molecular Dynamics of Additives in Polymers written by A. L. Kovarski and published by VSP. This book was released on 1997 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on the dynamical behaviour of low-molecular additives in solid polymer matrixes. It covers: types and models of molecular motion in condensed media; dependence of motional frequency on particle structure and size, temperature, volume and stress; and polymer properties and polymeric structures. Extensive analysis of common regularities of rotational and translational dynamics of molecules introduced into polymers are given. The book also includes experimental techniques for molecular mobility evaluation, and features detailed data on rotational dynamics of additives. It should be of interest to specialists in various fields of polymer physical chemistry and materials science.
Book Synopsis A Molecular Dynamics Investigation of the Mechanism of Turbulence Modification by Polymer Additives and Noise Irradiation by : C. J. Montrose
Download or read book A Molecular Dynamics Investigation of the Mechanism of Turbulence Modification by Polymer Additives and Noise Irradiation written by C. J. Montrose and published by . This book was released on 1987 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular dynamics computer simulation experiments have been carried out to study the response of a dilute short-chain polymer solution subjected to severe flow conditions. Under high amplitude shear flows the polymer molecules were observed to reorient and reconfigure so as to be confined to a plane parallel to the flow direction. Once this situation is achieved, aperiodic cycling between coiled and elongated forms within the plane was observed. No significant enhancement of the intramolecular oscillations was seen, nor was there any flow-induced tension developed in the molecule. Conversely, in a configuration in which one end of the molecule was anchored and a uniform flow of solvent was maintained, scission of an intramolecular bond was found at high solvent flow velocities. The mechanism of bond rupture arose from the flow-driven excitation of intramolecular vibrational modes of motion of the molecule, the steady-state tension arising from viscous drag on the molecule being much smaller than that required for bond scission. Analysis of the flow-induced vibrations leads to the conclusion that bond breaking occurs only when there is substantial excitation of the low frequency acoustical modes of the molecule. This mechanism should also be operative in the degradable of very long-chain polymers in a flow field characterized by an extesional velocity gradient.
Book Synopsis Polymer Additive Analytics by : Jan C. J. Bart
Download or read book Polymer Additive Analytics written by Jan C. J. Bart and published by Firenze University Press. This book was released on 2006 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Additives in Polymers by : Jan C. J. Bart
Download or read book Additives in Polymers written by Jan C. J. Bart and published by John Wiley & Sons. This book was released on 2005-04-08 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt: This industrially relevant resource covers all established and emerging analytical methods for the deformulation of polymeric materials, with emphasis on the non-polymeric components. Each technique is evaluated on its technical and industrial merits. Emphasis is on understanding (principles and characteristics) and industrial applicability. Extensively illustrated throughout with over 200 figures, 400 tables, and 3,000 references.
Book Synopsis Polymer Additives by : Jiri E. Kresta
Download or read book Polymer Additives written by Jiri E. Kresta and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ever since the beginning of the plastics and rubber industry, it was realized that useful products could be produced only if cer tain additives were incorporated into polymers. With the help of these additives, when physically dispersed in a polymer matrix, it has been possible to improve stability against thermal, oxidative, UV, hydrolytic and biological degradation, mechanical properties, flammability, cost, and processibility of plastics. The enormous growth of the volume of plastics consumed by modern society, and new application areas for plastics, have created a demand for new, better additives and better understanding of their functions in polymer systems. As a result of these trends there is a need for sharing of information on progress achieved in the area of polymer additives among engineers and scientists of the plastics industry and academia. This book is based on expanded and updated papers originally presented at the International Symposium on Polymer Additives, which was held in Las Vegas, Nevada, and was sponsored by the American Chemical Society, Division of Polymeric Materials Science and Engi neering. The book is divided into five parts which cover advances in various areas of polymer additives. The first part is devoted to the progress in understanding of UV degradation and stabilization of various polymers. Oxidation degradation and stabilization of plastic materials is covered in the second part. New developments in the stabilization of PVC are presented in the third part.
Book Synopsis The Influence of Polymer Additives on Velocity and Temperature Fields by : Bernhard Gampert
Download or read book The Influence of Polymer Additives on Velocity and Temperature Fields written by Bernhard Gampert and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Symposium on "The Influence of Polymer Additives on Veloc ity and Temperature Fields" was proposed to the General Assem bly of the International Union of Theoretical and Applied Me chanics (IUTAM) by the "Gesellschaft fur Angewandte Mathematik und Mechanik" (GAMM). The Symposium was held under the auspices of IUTAM in association with the "Deutsche Rheologische Ge sellschaft" (DRG) with responsibility for the organization ly ing with B. Gampert (Universitat-GH-Essen). The main aim of this IUTAM Symposium was to consider the funda mental aspects of the phenomena that occur when small amounts of polymers are added to turbulent flows (turbulent drag re duction) and laminar porous media flows. In particular atten tion was devoted to - the influence of molecular parameters of the polymers and solution properties, especially the elongational viscosity, on turbulent flow and laminar porous media flow; the influence of polymers on the turbulence structure in polymer drag reduction
Book Synopsis Nonequilibrium Molecular Dynamics by : Billy D. Todd
Download or read book Nonequilibrium Molecular Dynamics written by Billy D. Todd and published by Cambridge University Press. This book was released on 2017-03-10 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: This coherent collection of theory, algorithms, and illustrative results presents the field of nonequilibrium molecular dynamics in detail.
Book Synopsis Additives in Polymers by : Alexandr A. Berlin
Download or read book Additives in Polymers written by Alexandr A. Berlin and published by CRC Press. This book was released on 2016-01-05 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additives are selected depending on the type of polymers to which they will be added or the application for which they will be used. The appropriate selection of additives helps develop value-added plastics with improved durability as well as other advantages. This research book provides a range of modern techniques and new research on the use of a
Book Synopsis Molecular Dynamic Modeling and Simulation for Polymers by : Anthony F. Harrell
Download or read book Molecular Dynamic Modeling and Simulation for Polymers written by Anthony F. Harrell and published by . This book was released on 2003-09 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers have been widely used in various engineering applications. For more than a quarter century, the materials have been utilized intensively for the binding materials for composites. The material properties of the binding materials called matrix materials play an important role for the composite material behaviors, As a result, the objective of this study was to understand the mechanical properties of polymers. In particular, the goal was to develop insights as to how a molecular level structure is connected to the bulk properties of materials assuming homogeneity. To this end, molecular dynamics was used to model and simulate the polymeric behaviors. Polymeric chains were modeled using the bead and spring model along with interacting potentials. The study examined the effects of different sizes, densities, and numbers of molecules per chain on the shear moduli of the polymers. Furthermore, some preliminary study was also conducted for metallic particle reinforced polymer composites.
Book Synopsis Molecular Motion in High Polymers by : R. T. Bailey
Download or read book Molecular Motion in High Polymers written by R. T. Bailey and published by Oxford University Press, USA. This book was released on 1981 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents an up-to-date view of the ways in which the molecular dynamics of poylmers affect a variety of macroscopic phenomena.
Book Synopsis Additives for Plastics by : Jan Stipek
Download or read book Additives for Plastics written by Jan Stipek and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the most important substances used as additives in the plastics industry to improve the properties of polymer-based materials. Each chapter deals with a particular type of additive based on the type's definition, structure, and classification according to main effects on polymeric materials. The mechanism of the additive efficiency and its effects on basic properties of specific polymers are discussed and a survey of its important qualities and practical applications is given. Each chapter is introduced by a theoretical analysis of the practical and technological importance of the ad ditive. The book is mainly intended for students in technical colleges, polytechnics and universities who are studying plastics technology and macromolecular chemistry as part of their general curriculum and for technologists in industry engaged in development, sales, technical service and production functions, and applications of plastics. An elementary knowledge of chemistry, physical chemistry and polymer science at the technical college level is assumed. Prague and Montreal, December 1982 J. Stepek, H. Daoust Table of Contents Introduction .
Book Synopsis Plastics Additives by : Jan C. J. Bart
Download or read book Plastics Additives written by Jan C. J. Bart and published by IOS Press. This book was released on 2006 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains an outline of the principles and characteristics of relevant instrumental techniques, provides an overview of various aspects of direct additive analysis by focusing on an array of applications in R ampD, production, quality control, and technical service.
Book Synopsis The Effect of Additives of Low Molecular Weight on the Mechanical Damping of Some Polymers by : Paul Wilhelmus van Hoeve
Download or read book The Effect of Additives of Low Molecular Weight on the Mechanical Damping of Some Polymers written by Paul Wilhelmus van Hoeve and published by . This book was released on 1943 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Supramolecular Polymer Additives - Their Molecular Structure, Self-Assembly and Interaction with the Polymer by : Kasper P. van der Zwan
Download or read book Supramolecular Polymer Additives - Their Molecular Structure, Self-Assembly and Interaction with the Polymer written by Kasper P. van der Zwan and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Polymer Additives Effects on Structure and Dynamics by : Adam Eugene Imel
Download or read book Polymer Additives Effects on Structure and Dynamics written by Adam Eugene Imel and published by . This book was released on 2015 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents work that expands the understanding of the effect additives have on the structure and dynamics of a polymer matrix. Polymer additives are molecules, nanoparticles or fibers that are added to a polymer to modify the properties of the host polymer. Due to the vast amount of additives available, our studies were limited to C60 (C60), soft polystyrene nanoparticles, and poly(ethylene oxide). The first part of this project examined the influence that C60 nanoparticles have on the assembly of polyacrylonitrile using small angle and wide-angle x-ray scattering techniques and viscometry. The addition of C60 (C60) to polyacrylonitrile has little effect to the chain dimensions while in solution but shift the crystalline morphology from hexagonal packing to an orthorhombic space group. Additionally, the C60 (C60) nanoparticle decreases the amount of crystallinity measured in the polymer nanocomposites. This project provides insight into the use of non-covalent interactions between a polymer and nanoparticle to produce a well-dispersed nanocomposite. The next part of the project focuses on polystyrene center of mass diffusion in the presence of soft polystyrene nanoparticles. The addition of the soft nanoparticles slowed the matrix polymer diffusion when the nanoparticles were larger or the same size as the matrix polymer chains. Although when the nanoparticles were 3 times smaller than the matrix polymer chains the nanoparticles increased the diffusion of the host polymer chains. Additionally, it was shown that the nanoparticles are not stationary, rather that the diffusion of the nanoparticles is best described by the slow mode theory of diffusion. Finally, poly(ethylene oxide) was studied as an additive to lignin solutions, which mimic the beginning production stages of lignin-based carbon fibers. The study focuses on the influence that poly(ethylene oxide) has on the self-assembly of lignin while in solution. The cylindrical structure of the lignin molecules is isotopically extended along the length of the cylinder with the addition of poly(ethylene oxide) to varying magnitudes depending on the source of the lignin. This work gives insight into the best starting conditions for lignin-based carbon fiber that can maximize the properties of the final product.
Book Synopsis Molecular Simulation Methods for Predicting Polymer Properties by : Vassilios Galiatsatos
Download or read book Molecular Simulation Methods for Predicting Polymer Properties written by Vassilios Galiatsatos and published by John Wiley & Sons. This book was released on 2005-02-03 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among the thousands of synthesized polymers, new polymeric substances and materials with new, often unusual, properties often arise. Consequently, this presents a problem in determining the physical properties of polymers, and thus makes it difficult to ascertain how to synthesize polymers with desired properties. This book discusses what molecular modelling can do to predict the properties of realistic polymer systems. Organized by property, each chapter will address the methods one may use to study the particular system. * Focuses on polymer properties rather than methods, making it more accessible to the average scientist/engineer * All important polymers will be covered, such as amorphous polymers, semicrystalline polymers, elastomers, emulsions, polymer interfaces and surfaces * Chapters contributed by experts in the field * Discusses current commercial software used in molecular simulation
