Molecular Dynamics of Additives in Polymers PDF Download
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Author: Alexander Kovarski
Publisher: CRC Press
ISBN: 1466563745
Category : Science
Languages : en
Pages : 289
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Book Description
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.
Author: Alexander Kovarski
Publisher: CRC Press
ISBN: 1466563745
Category : Science
Languages : en
Pages : 289
Get Book Here
Book Description
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.
Author: A. L. Kovarski
Publisher: VSP
ISBN: 9789067642590
Category : Technology & Engineering
Languages : en
Pages : 292
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Book Description
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.
Author: C. J. Montrose
Publisher:
ISBN:
Category :
Languages : en
Pages : 36
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Book Description
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.
Author: Jan C. J. Bart
Publisher: Firenze University Press
ISBN: 8884533791
Category : Science
Languages : en
Pages : 393
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Book Description
Author: Jiri E. Kresta
Publisher: Springer Science & Business Media
ISBN: 1461327970
Category : Science
Languages : en
Pages : 403
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Book Description
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.
Author: Alexandr A. Berlin
Publisher: CRC Press
ISBN: 1498728596
Category : Science
Languages : en
Pages : 357
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Book Description
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
Author: Billy D. Todd
Publisher: Cambridge University Press
ISBN: 0521190096
Category : Science
Languages : en
Pages : 371
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Book Description
This coherent collection of theory, algorithms, and illustrative results presents the field of nonequilibrium molecular dynamics in detail.
Author: Medvedevskikh
Publisher: CRC Press
ISBN: 9067644153
Category : Technology & Engineering
Languages : en
Pages : 333
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Book Description
The main focus in this monograph is on models of the kinetics of photo-initiated polymerization of mono- and bi-functional monomers up to the high conversion stage, their derivation, analysis and comparison with the experimental data. This monograph can be useful for scientists, engineers, post-graduate training students and students who are interested in problems both of the polymerization kinetics and general chemical kinetics.
Author: Kozlov
Publisher: CRC Press
ISBN: 9047418255
Category : Science
Languages : en
Pages : 354
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Book Description
This monograph deals with the structural aspects of transport processes of gases, physical ageing and thermo-oxidative degradation of polymers in detail. Fractal analysis, cluster models of the polymer structurea ‘s amorphous state as well as irreversible aggregation models are used as main structural models. It is shown that the polymer structure
Author: Jan C. J. Bart
Publisher: John Wiley & Sons
ISBN: 0470012056
Category : Technology & Engineering
Languages : en
Pages : 836
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Book Description
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.
