BOOK REVIEWS Fine Particle Measurement
Clyde Ow, Jr., and J. M. DallaValle, Georgia Institute of Teehnolog~. Thc Maamillian Co., New York, l95!). xiv 353 pp. Figs. and tahles. 15 X 21.5cm. $10.50.
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T h i hook ~ is a n expansion of anr segment, of "Micromeritio~," the entire auhject of fine particle technology, first written hy DallaVslle in 1943. As the authors point out, the ~ i s oand surface of partirler; ontically influence so m q v trchnological phenomena from the setting time of cement m d tha rolor, gloss, and w r ~ t h w -
ing of paints to the h s t c of many foods and the effectiveness of adsorbents and oet~alysts. Anyone winhing to determine the sire, yurface area, or poro characteristics of fine particles will find this to he an e s d l e n t reference hook to hell, to decide which approach to take; it will a180 provide R. g w d soumo book for courses in colloid and surface chemistry. For particle size determination, microscopy, sieving, sedimentation, inertial, and radiation scattering t,echniques are deserihod. For ~ u r f a c rarea determinetion, permramotry, gas adsorption, liquid phasc adsorption, and a variety of miswllanraus terhniqnes are given. Terhn i q u ~ sfor pore size anrl pow-siau diatrihltion form thc coneltdng chnptrr.
Descriptions of apparstus and of calculations for the prominent methods are provided. A useful appendix which gives comparisons of results by various methods and a n extensive bibliography complete the survey. The experimentalist would he further aided if dimensions of apparatus and sizes of parts were given in cases where he may have t o construct his own apparatus. This is the case, for example, for the BET apparatus on page 176; the capillary nature of the "dead spaoe" is also not indicated. The writing and typography :m free of errors suoh as the missing coefficient in cqnation 7.5 on page 168. And seldom is a. critical analysis of the t,eehnique avoided as it is in the case of the H J Ahsoh~tcMethod (pp. 236); cracks anrl crevices in the particles or interparticle oapillsries almost invariably affoct the results 80 that the method is misnamed "absolute." Nevertheless, the book fulfills its purpose quite well. For a n introduction to the theory of fine particle measnrmeat and far a description of the methods (over 70) and apparatus, no other romp ~ h o n s i v ereference is now availahle.
A. C.
ZETTLEMOYER
Lehigh U n i v e r d y Bethlehem, Pennsyltenic
Epoxy Resins
Irving W & l , Consultant, Skeiat ff Sehwnra La.horatories, Inc., Newark, N. J. Reinhold Publishing Corp., Xew York, 1958. xii 293 pp. 18.5 X 19 cm. $5.50.
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The epoxy resins, s class of versat.ilr, t,hermosett,ing resins, are thoroughly considered from the point of view of thrir engineering pmpwties in t,hir eighth voltme of thn llcinhald Plastics Applicnbion~Series. Aftcr a. brief history of tlir development of t,hc epoxy resins anrl n short dise~~ssionof the chemifit,ry involved in thcir format,ian, the twhniwl :arpeets of their production m d om arc prrscntcd in :~mplodctail. Their uses ;la r x ~ t i n g and potting eompoonda, M hraivos, plrtst,ieizern, and coatings arc covered. Throe hundred referrnrw n1.c ~ i w Iu< # Ilw wiginti1 l i t w ~ t w ~ . T h t I ~ m kis wimlcd tow:~nIllae w q i nI l l t I . 11, ~ 1 1 1 1 ~ t,ion iiwould be moat useful in i:oor8e~in ~,hrmical and merhsaicd engineering.. The completeness of the coverage should make this s valuable book for the tmbn i d man. T ~ o h r a sE. ~ R I N O T O N The College of llroosle~~ Woost~r.Ohio
A420
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Journal of Chemical Education
