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Polymer Dynamics and Relaxation

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 (ISBN-13: 9780511888878)

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.

• Phenomenological descriptions are introduced along with the principles underlying the experimental methods in order to help understanding • Many chapters have an appendix to develop the molecular theory, and to include connection with simulations • Results from experimental methods, and of simulations and theories, are included where appropriate

Contents

Preface; Part I. Methodology: 1. Mechanical relaxation; 2. Dielectric relaxation; 3. NMR spectroscopy; 4. Dynamic neutron scattering; 5. Molecular dynamics (MD) simulations of amorphous polymers; Part II. Amorphous Polymers: 6. The primary transition region; 7. Secondary (subglass) relaxations; 8. The transition from melt to glass and its molecular basis; Part III. Complex Systems: 9. Semi-crystalline polymers; 10. Miscible polymer blends; Appendix 1. The Rouse Model; Appendix 2. Site models for localized relaxation; Index.

Review

Review of the hardback: 'The authors have a real gift for conveying the gist of an idea intelligently and effectively … the book is consistently accessible and clear-headed in a way that can engage many an undergraduate's interest … warmly recommended. Boyd and Smith have done a good job of explaining the problems and will certainly get you thinking.' Current Engineering Practice

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