Molecular Basis of Transitions and Relaxations PDF Download

Author: Dale J. Meier
Publisher: CRC Press
ISBN: 9780677112404
Category : Mechanical chemistry
Languages : en
Pages : 452

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Author: Dale J. Meier
Publisher:
ISBN:
Category : Mechanical chemistry
Languages : en
Pages : 429

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Author: Richard Boyd
Publisher: Cambridge University Press
ISBN: 1107320259
Category : Technology & Engineering
Languages : en
Pages : 369

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Book Description
Polymers exhibit a range of physical characteristics, from rubber-like elasticity to the glassy state. These particular properties are controlled at the molecular level by the mobility of the structural constituents. Remarkable changes in mobility can be witnessed with temperature, over narrow, well defined regions, termed relaxation processes. This is an important, unique phenomenon controlling polymer transition behaviour and is described here at an introductory level. The important types of relaxation processes from amorphous to crystalline polymers and polymeric miscible blends are covered, in conjunction with the broad spectrum of experimental methods used to study them. In-depth discussion of molecular level interpretation, including atomistic level computer simulations and applications to molecular mechanism elucidation, are discussed. The result is a self-contained approach to polymeric interpretation suitable for researchers in materials science, physics and chemistry interested in the relaxation processes of polymeric systems.

Author: C.B. McArdle
Publisher: Springer Science & Business Media
ISBN: 9780216925038
Category : Technology & Engineering
Languages : en
Pages : 474

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Author: Jaroslav Šesták
Publisher: Springer Science & Business Media
ISBN: 904812882X
Category : Technology & Engineering
Languages : en
Pages : 392

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Book Description
Provides a summary of non-equilibrium glassy and amorphous structures and their macro- and microscopic thermal properties. The book contains a carefully selected works of fourteen internationally recognized scientists involving the advances of the physics and chemistry of the glassy and amorphous states.

Author: D.R. Oliver
Publisher: Springer Science & Business Media
ISBN: 9400907818
Category : Science
Languages : en
Pages : 588

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Author: Andreas Schönhals
Publisher: Springer Nature
ISBN: 3030897230
Category : Technology & Engineering
Languages : en
Pages : 372

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The book presents recent developments in the field of composites, investigated by Broadband Dielectric Spectroscopy (BDS) and sheds a special focus on nanocomposites. This volume compares the results obtained by BDS with data from other methods like hyphenated calorimetry, dynamical-mechanical spectroscopy, NMR spectroscopy and neutron scattering. The addressed systems range from all kinds of model systems, such as polymers filled with spherical silica particles, advanced materials such as polymers with molecular stickers or hyperbranched polymer-based matrices to industrially significant systems, like epoxy-based materials. The book offers an excellent insight to a valuable application of dielectric spectroscopy and it is a helpful guide for every scientist who wants to study dynamics in composite materials.

Author: David Porter
Publisher: CRC Press
ISBN: 9780824795993
Category : Technology & Engineering
Languages : en
Pages : 520

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Book Description
Describes a consistent set of relations between the structure of polymers and their commercially important thermal and mechanical properties for engineering applications--facilitating the development of a framework of polymer physics to explore new application areas without prior correlations. Includes methods for the easy calculation of input parameters and tabulates the most important parameters for 250 polymers.

Author: Greg Haugstad
Publisher: John Wiley & Sons
ISBN: 0470638826
Category : Science
Languages : en
Pages : 496

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Book Description
This book enlightens readers on the basic surface properties and distance-dependent intersurface forces one must understand to obtain even simple data from an atomic force microscope (AFM). The material becomes progressively more complex throughout the book, explaining details of calibration, physical origin of artifacts, and signal/noise limitations. Coverage spans imaging, materials property characterization, in-liquid interfacial analysis, tribology, and electromagnetic interactions. “Supplementary material for this book can be found by entering ISBN 9780470638828 on booksupport.wiley.com”

Author: J. Fünfschilling
Publisher: Springer Science & Business Media
ISBN: 9400908636
Category : Science
Languages : en
Pages : 282

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Book Description
Relaxation phenomena of excited molecular states are abundant in all nature. They mediate such key processes as photochemical reactions or even the pathways of ordinary chemical reactions. However, for a long time the main research in electronic relaxation processes was concerned with anorganic solids, in part because of their great technological importance (photography, semiconductors ... ) in part also because these compounds were the "workhorses" of the solid state physicists. In the last 30 years, there was a steadily increasing interest in organic molecular systems, first in molecular crystals and later in all forms of molecular solids (glasses, polymers, membranes, ... ). The present volume combines papers on quite different types of relaxation phenomena: the type of solid studied, the electronic states involved, the physical processes responsible for the relaxations are all different. Nevertheless, after reading this book, a more clear and complete picture of the phenomenon "relaxa tion" emerges that proves that this volume is more than just a collection of individual articles. The volume starts with the paper "Spin-lattice and spin-spin relaxation in photo-excited triplet states in molecular crystals" by Jan Schmidt. Even in these seemingly simple systems of isolated guest molecules in a single crystal host, the relaxation phenomena are quite involved and a very thorough investigation is necessary to find the key relaxation processes. The end of the article provides a bridge to the following paper: it treats interactions of two molecules (dimers), where resonant interactions become important and lead to new, characteristic relaxation processes.