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Author: J. P. Burger
Publisher:
Published: 1964
Total Pages: 14
ISBN-13:
DOWNLOAD EBOOK →The intrinsic viscosities of a group of macromolecules (polysiloxanes) have been determined in benzene solution, and a relationship between these values and the viscosity-average weights has been established with the use of the Mark-Houwink equation.
Author: Donald McIntyre
Publisher:
Published: 1959
Total Pages: 18
ISBN-13:
DOWNLOAD EBOOK →For the past two years work has been in progress at the National Bureau of Standards to determine accurately the molecular weights of macromolecules through the measurement of dilute solution properties. This may at first seem like an easy task, although those acquainted with the details of the necessary measurements and their interpretation know that it is not (1).2 Difficulties are caused by the problems that usually arise when measurements are made on an absolute basis rather than on a relative basis, and from complexities of macromolecular interactions, even in very dilute solutions. Molecular weight determinations, however, are not the only physicochemical measurements on high polymeric materials that give difficulties; density measurements also demand considerably more care and patience than do similar measurements on low molecular weight compounds. Precise measurements of densities have revealed anomalies, the resolution of which has led to a much better understanding of the molecular properties of crystallinity and viscoelasticity of high polymeric materials. Likewise, improved precision in measurements of solution properties has given us much additional information on properties such as size and shape of the molecules, and distribution of molecular weights.
Author: Hans-Georg Elias
Publisher: Springer Science & Business Media
Published: 2013-06-29
Total Pages: 1228
ISBN-13: 1461573645
DOWNLOAD EBOOK →Like so many of its kind, this textbook originated from the requirements of teaching. While lecturing on macromolecular science as a required subject for chemists and materials scientists on the undergraduate, graduate, and postgraduate levels at Swiss Federal Institute of Technology at Zurich (1960-1971), I needed a one-volume textbook which treated the whole field of macromolecular science, from its chemistry and physics to its applications, in a not too elementary manner. This textbook thus intends to bridge the gap between the often oversimplified introductory books and the highly specialized texts and monographs that cover only parts of macromolecular science. This first English edition is based on the third German edition (1975), which is about 40% different from the first German edition (1971), a result of rapid progress in macromolecular science and the less rapid education of the writer. This text intends to survey the whole field of macromolecular science. Its organization results from the following considerations. The chemical structure of macromolecular compounds should be independent of the method of synthesis, at least in the ideal case. Part I is thus concerned with the chemical and physical structure of macro molecules. Properties depend on structure. Solution properties are thus discussed in Part II, solid state properties in Part III. There are other reasons for discussing properties before syntheses: For example, it is difficult to under stand equilibrium polymerization without knowledge of solution thermody of the glass temperature, etc.
Author: Richard H. Boyd
Publisher: Cambridge University Press
Published: 1993
Total Pages: 436
ISBN-13: 9780521565080
DOWNLOAD EBOOK →An introduction concerning the synthesis, structure and properties of the individual molecules constituting polymeric materials.
Author: F Bovey
Publisher: Elsevier
Published: 2012-12-02
Total Pages: 566
ISBN-13: 0323145795
DOWNLOAD EBOOK →Macromolecules is an introductory book about macromolecules, specifically about the fundamental aspects of macromolecules, such as their nature, the ways they are formed, and their behavior. This book also focuses on the basics of macromolecules, which includes history, composition, and properties. The topics covered in this book include polymerization kinetics, chemical reactions, and degradation of macromolecules. This book also discusses biological molecules, including naturally occurring materials, synthetic macromolecules, and model compounds. Students majoring in chemistry or other related fields, such as materials engineering, will find this book very useful.
Author: S. F. Sun
Publisher: John Wiley & Sons
Published: 2004-01-28
Total Pages: 590
ISBN-13: 0471281387
DOWNLOAD EBOOK →Integrating coverage of polymers and biological macromolecules into a single text, Physical Chemistry of Macromolecules is carefully structured to provide a clear and consistent resource for beginners and professionals alike. The basic knowledge of both biophysical and physical polymer chemistry is covered, along with important terms, basic structural properties and relationships. This book includes end of chapter problems and references, and also: Enables users to improve basic knowledge of biophysical chemistry and physical polymer chemistry. Explores fully the principles of macromolecular chemistry, methods for determining molecular weight and configuration of molecules, the structure of macromolecules, and their separations.
Author: Mehra Harish C
Publisher: Krishna Prakashan Media
Published: 1978
Total Pages: 1484
ISBN-13: 9788187224099
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