Polymer Colloids: Proceedings of an American Chemical Society Symposium on Polymer Colloids Held in Chicago, Illinois, September 13-18,

ISBN-13: 9781468419221 / Angielski / Miękka / 2012 / 188 str.

Robert Fitch

Opis

Colloid Science is an ancient art. Unfortunately many scientists still regard it as such We hope that this book will dispel all such illusions by providing convincing evidence that a quiet renaissance has occurred. The New Colloid Science is based on rigorous, quantitative theory and works with extremely well de fined experimental systems. The former was first made possible by the advent of the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory of the stability of lyophobic colloids in 1948. This is based on a consideration of the electrostatic interactions among colloidal par ticles bearing fixed charges in a medium containing moving counter ions. The Hamiltonian formulation of this model by Weiss, Mock, and Moon herein is a significant development in our theoretical pro gress. During about the same period we have advanced experimentally from poorly defined "glue-like" systems to monodisperse colloids, synthesized for the first time in 1955 when J. W. Vanderhoff and E. B. Bradford announced their polystyrene colloids with extremely narrow particle size distributions. Vanderhoff and his coworkers have now set another milestone by fully characterizing the surfaces of these systems, as described in this monograph. The revolution is snowballing. Krieger and his coworkers have shown that the opalescent colors exhibited by "deionized" monodis perse latexes are due to Bragg diffraction of these liquid-crystal systems, that they exhibit reversible "melting" and that they may serve as macroscopic models for order-disorder phenomena."

Spis treści

“Clean” Monodisperse Latexes as Model Colloids.- The Effect of Ion Exchange on Latex Stability.- Effect of Polymer Polarity on the Estimation of Charged Groups in Polymers by Dye-Partition Technique.- Order and Disorder in Monodisperse Latexes.- Particle Formation in Polymer Colloids, III: Prediction of the Number of Particles by a Homogeneous Nucleation Theory.- Homogeneous Nucleation of Polymer Colloids, IV: The Role of Soluble Oligomeric Radicals.- A Hamiltonian Formulation of Colloid Electrostatic Theory.- Stability of Polyvinyl Chloride Latices.- Emulsion Polymerization with a Surface Active Polyelectrolyte as the Emulsifier.- The Prediction of Particle Size and Molecular Weight Distributions in Emulsion Polymerization.- Simulation of the Kinetics of an Aqueous Emulsion Copolymer System.- Film Formation from Polymer Colloids.