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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.
The Essential Handbook of Polymer Terms and Attributes not only acts as an encyclopaedia of polymer science but also fosters an appreciation for the significance of polymers in fields including materials science, chemistry, engineering, and medicine. This book serves as an excellent reference book, covering every possible term and attribution associated with the vast and diverse field of polymers. This comprehensive volume serves as a vital resource for researchers working in industry and academia, offering a clear and concise exploration of polymer science with the most essential reference data available. Each polymer term is defined in a straightforward manner, ensuring that readers of all...
Vols. for 1975- include publications cataloged by the Research Libraries of the New York Public Library with additional entries from the Library of Congress MARC tapes.
Concise Polymeric Materials Encyclopedia culls the most used, widely applicable articles from the Polymeric Materials Encyclopedia - more than 1,100 - and presents them to you in a condensed, well-ordered format. Featuring contributions from more than 1,800 scientists from all over the world, the book discusses a vast array of subjects related to the: synthesis, properties, and applications of polymeric materials development of modern catalysts in preparing new or modified polymers modification of existing polymers by chemical and physical processes biologically oriented polymers This comprehensive, easy-to-use resource on modern polymeric materials serves as an invaluable addition to reference collections in the polymer field.