KINETIC MODEL FOR THE ~(60)Co-γ RAY INITIATED INVERSE EMULSION POLYMERIZATION OF SODIUM ACRYLATE SOLUTIONS

摘要

The conversion-time curves have been measured and treated quantitatively for the ~(60)Co-γ ray initiated inverse emulsion polymerization of aqueous sodium acrylate solutions on the basis of a monomer-droplet-nucleation mechanism. A method has been proposed to estimate the average number of polymerizing radicals in a droplet, n, that characterizes the polymerization kinetics. For the system studied under the experimental conditions, the value of n was derived as several hundreds, which is much larger than that for conventional emulsion polymerization.