Radiation Curing of Polymeric Materials

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BOOKS applications chapters valuable. Other important elements are briefly mentioned. For example, the toxicity of chromium and aluminum in the aquatic environment is dependent on their oxidation states. In addition, descriptions of the difficulties in performing analyses of real environmental samples are somewhat incomplete with respect to sampling and sample preparation, although sufficient recent references are given to enable the reader to thoroughly research these areas. In summary, this book is a good review of the general analytical techniques of combined chromatographic and spectroscopic detection and a thorough survey of techniques for a number of environmentally significant elements. It would be most useful as a reference for analytical chemists concerned with metal speciation in environmental samplesespecially for those unfamiliar with the advantages of spectroscopic detection. Although some gaps in coverage exist, the book is a valuable reference for an important and rapidly growing area of environmental analytical chemistry. The Vibrational Spectroscopy of Polymers. D. I. Bowers and W. F. Mad-dams, xiii + 326 pp. Cambridge University Press, 32 East 57th St., New York, NY 10022.1989. $90 Reviewed by Jack Koenig, Department of Macromolecular Science, Case Western Reserve University, Cleveland, OH 44106 Upon receipt of this book, I was filled with enthusiasm because I have personal knowledge of the background and experience of the two authors and knew that they would do an outstanding job. The challenge that they set for themselves was to write an introductory readable text to give novices unfamiliar with IR and Raman spectroscopies, or elements of polymer science, a single text to allow them to be conversant in the combined aspects of polymer spectroscopy. This is no small challenge but is certainly a worthy objective in light of the special knowledge required to use vibrational spectroscopy intelligently to study polymer systems. The book does not completely accomplish this objective, but it does present a sound basis for further development on the part of the novice reader. Some of the conceptual discussions are well thought out and well written. The discussion of group frequencies is good and should be read by experienced spectroscopists for the insights it provides. Occasionally, however, some of the oversimplifications do lead to confusion. For example, on p. 15, where the discussion of the spectroscopy of polymers is described as a function of the "many repeat units within one wavelength," one is overwhelmed by the notion that such a concept would be consistent with observed absorption of "small" molecules such as carbon monoxide or hydrogen chloride. The treatment of the various controversies involved in the assignments of the most studied polymer, polyethylene, is lucid and sound in judgment, indicating that vibrational assignments can have a lifetime of their own depending on the amount of knowledge available at the time of the assignment. The book has some oversights, such as the lack of discussion of emission, photoacoustic, and diffuse reflectance techniques for IR sampling. These techniques are now the dominant modern methods and should be included for the use of the active worker. A definite no-no, in my opinion, is the presentation of difference spectra in the %T mode when it is recognized that only background in the %T mode will not show up in the subtraction spectra, and only absorbance spectra corrected for baseline should be subtracted. The novice should not be misled. Overall, I liked the book very much. To see a unified treatment of IR and Raman techniques for polymers is satisfying because a common treatment can be made, as this book demonstrates. Modern spectroscopic equipment allows one to obtain both on the same instrument, so this book is also timely. I highly.recommend it for budding spectroscopists who are initially encountering polymers using IR and Raman spectroscopies. Laboratory Automation Using the IBM PC. Stephen C. Gates and Jordan Becker, 322 pp. Prentice Hall, Engle-wood Cliffs, NJ 07632.1989. $36 Reviewed by Robert Megargle, Department of Chemistry, Cleveland State University, Cleveland, OH 44115 Computer-automated instruments and equipment can be purchased for nearly all popular laboratory techniques. To attract the widest possible market, these devices must be broad in application and general in design. Scientists are almost always better off buying such equipment rather than constructing it themselves. In some situations, however, building a system in house is the preferred route. 668 A ANALYTICAL CHEMISTRY, VOL. 62, NO. 11, JUNE 1, 1990 Radiation Curing of Polymeric Materials Now a widely used method for processing polymeric materials, radiation curing affects almost every aspect of the coatings industry. This new volume concentrates on the use of high-intensity radiation sources such as UV light, electron beams, and lasers. Covering both fundamental and applied aspects of UV and EB curing, this comprehensive volume highlights the latest research and developments. Expert authors-the best in the field-especially in surface coatings have contributed to this 36-chapter text which covers: photoinitiators novel radiation photocurable systems properties of radiation-cured materials photodegradation of radiation-cured films radiation curing of cationic polymerization laser-initiated polymerization high-energy radiation curing Introductory chapters on both photocuring and electron-beam curing have been incorporated to introduce those not familiar with the concepts of radiation to the basic principles involved. Charles E. Hoyle, Editor. University of Southern Mississippi James F. Kinstle, Editor. James River Corporation Developed from a symposium sponsored by the Division of Polymeric Materials: Science and Engineering of the American Chemical Society ACS Symposium Series No. 417 561 pages (1989) Clothbound ISBN 0-8412-1730-0 LC 89-29972 $99.95 , r ,. C. American Chemical Society Distribution Office, Dept. 53 1155 Sixteenth St., N.W. Washington, DC 20036 or CALL TOLL FREE 800-227-5558 (in Washington, D.C. 872-4363) and use your credit card!

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