Ion-Containing Polymers

Ion-Containing Polymers PDF

Author: A. Eisenberg

Publisher: Elsevier

Published: 2012-12-02

Total Pages: 304

ISBN-13: 0323156754

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Ion-Containing Polymers: Physical Properties and Structure is Volume 2 of the series Polymer Physics. This book aims to fill in the gap in literature regarding the physical aspects of ion-containing polymers. A total of five chapters comprise this book. The Introduction (Chapter 1) generally deals with the application of ion-containing polymers, general classification, and the available works regarding the subject. Chapter 2 establishes the concepts of supermolecular structure and glass transitions in terms of the effects of ionic forces in polymers. These chapters provide the context in the discussion of viscoelastic properties of homopolymers and copolymers in Chapters 3 and 4. Finally, Chapter 5 tackles the configuration-dependent properties of ion-containing polymers. This volume will be of particular help to students in the field of physics and chemistry.

Structure and Properties of Ionomers

Structure and Properties of Ionomers PDF

Author: Michel Pineri

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 579

ISBN-13: 9400938292

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Ionomers, that is polymers containing a low concentration of charged units along the chain, have been the subject of increasing interest during the past twenty years. The presence of ionic groups in the poly mer changes some of its properties dramatically. Increases in the modu lus and the viscosity of several orders of magnitude have been observed, and changes in the glass transition of hundreds of degrees are possible. In addition, diffusion coefficients can be modified drastically. These changes are due primarily to the presence of reversible ionic cross links in these materials. Because of the low dielectric constant of most organic polymers, the ions or ionic dipoles tend to aggregate ; this aggregation process, however, is limited, because the ionic groups are covalently bonded to the organic chain. Host of the fundamental research done on these materials has been devoted to a determination of the extent of association, the structure of the aggregates, the limi ting factors, and the correlations between molecular and supermolecular structure and the resul ting properties.

Macromolecular Chemistry-11

Macromolecular Chemistry-11 PDF

Author: H. Eisenberg

Publisher: Elsevier

Published: 2013-10-22

Total Pages: 170

ISBN-13: 1483152146

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Macromolecular Chemistry — 11 is a collection of lectures presented at the International Symposium on Macromolecules (The Third Aharon Katzir-Katchalsky Conference) held in Jerusalem, Israel, on July 13-18, 1975. The papers explore a wide range of topics related to macromolecular chemistry, including polyelectrolytes, biologically active synthetic polymers, and spans of polymer chains. The use of polymers as chemical reagents is also considered. This book is comprised of 19 chapters and begins with an introduction to the close relation between polyelectrolytes and hydrophilic colloids. A survey of polyelectrolyte knowledge that has accumulated since about 1940 is also presented. The discussion then turns to biologically active synthetic polymers; polymers and other composites; theories of the condensed polymer state; polymer adsorption inferred from electrical double layer measurements; and mobility and conductivity of ions in and into polymeric solids. The structure and viscoelastic properties of ion-containing polymers in the solid state are also examined, along with the use of graphite insertion compounds as chemical reagents in organic chemistry. The results of research on chemical modification of cellulose are also presented. This monograph will be of interest to chemists.

Structure—Property Relationships in Polymers

Structure—Property Relationships in Polymers PDF

Author: Charles E. Carraher Jr.

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 234

ISBN-13: 1468447483

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The first concern of scientists who are interested in synthetic polymers has always been, and still is: How are they synthesized? But right after this comes the question: What have I made, and for what is it good? This leads to the important topic of the structure-property relations to which this book is devoted. Polymers are very large and very complicated systems; their character ization has to begin with the chemical composition, configuration, and con formation of the individual molecule. The first chapter is devoted to this broad objective. The immediate physical consequences, discussed in the second chapter, form the basis for the physical nature of polymers: the supermolecular interactions and arrangements of the individual macromolecules. The third chapter deals with the important question: How are these chemical and physical structures experimentally determined? The existing methods for polymer characterization are enumerated and discussed in this chapter. The following chapters go into more detail. For most applications-textiles, films, molded or extruded objects of all kinds-the mechanical and the thermal behaviors of polymers are of pre ponderant importance, followed by optical and electric properties. Chapters 4 through 9 describe how such properties are rooted in and dependent on the chemical structure. More-detailed considerations are given to certain particularly important and critical properties such as the solubility and permeability of polymeric systems. Macromolecules are not always the final goal of the chemist-they may act as intermediates, reactants, or catalysts. This topic is presented in Chapters 10 and 11.

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