272 pages | 130 Color Illus. | 130 B/W Illus.
In a rare, over-the-shoulder perspective of a leading scientist’s own breakthroughs, Clay Swelling and Colloid Stability puts emphasis on two significant paradigm shifts in colloid science that explain particle interactions for charged plates, stacks, suspensions, and pastes as well as spherical colloids.
Martin Smalley first discusses the replacement of the DLVO theory with the Coulombic Attraction Theory to explain the existence, extent, and properties of the two-phase region of colloid stability. Using the n-butylammonium vermiculite system as his model clay system, the author clarifies the flaws of conventional theories and presents the experimental details that form the basis of his new theories. He provides rigorous derivations that place the new electrical theory for charged colloids on a firm foundation in statistical mechanics. The author illustrates why a new, quantitative bridging flocculation model for polymer-stabilized colloids must replace the depletion flocculation model. Smalley also examines the discovery of the "dressed macroion" structure of clay plates in solution, the structure of a bridging polymer, and the distribution of polymer segments, counterions, and water molecules in the interlayer region.
Based on the author’s own research and 36 publications in the field, Clay Swelling and Colloid Stability isa self-contained and intellectually satisfying account of the revolutionary process leading to a universally sound, and increasingly applicable, theory of colloid stability.
"The investigations in the monograph were designed with great care. They gave invaluable experimental data, collected with the most sophisticated methods and interpreted in terms of highly advanced theories . . . This monograph deserves, therefore, to be praised as a paradigm for future studies in Colloid Science."
– Necip Güven, Texas Tech University, in Clays and Clay Minerals, 2006, Vol. 54, No. 6
"This is a delightful book, lucid and informative."
– Arthur Hubbard, in Journal of Interface Science, 2007
"Soil scientists who are interested in both theoretical and experimental aspects of clays and colloids (including weathering, soil stabilization, colloid facilitated transport) will find this book very valuable."
– Teamrat A. Ghezzehei, Lawrence Berkeley National Lab, in Soil Science Society of America Journal, Jan/ Feb 2008, Vol. 72, No. 1
Table of Contents
The n-Butylammonium Vermiculite System
The Coulombic Attraction Theory of Colloid Stability
Force-Distance Curves for Plate Macroions
Membrane Equilibria for Interacting Macroions
The Sol Concentration Effect in Clay Swelling
The Exact Mean Field Theory Solution for Plate Macroions
Criticisms and Refutations
The Structure of a Dressed Macroion in Solution
The Counterion Distribution between Charged Plates in Solution
Freezing Experiments on n-Butylammonium Vermiculite Gels
The Effect of Adding Polymers to the Vermiculite System
The Mechanism and Strength of Polymer Bridging Flocculation
The Structure of Bridging Polymers Index