Research and Development Studies into the Basic Technology of Radiation Induced Emulsion Polymerization Including Small Scale Pilot Plant Systems

摘要

The radiation induced emulsion polymerization of butadiene, styreneacrylonitrile and butadiene-acrylonitrile comonomer systems has been studied. In addition vinyl chloride has been investigated both in emulsion and in bulk under predicating conditions. Butadiene was found to polymerize extremely slowly in bulk and in emulsion. The styrene comonomer system was faster but also slow. However, extremely pure butadiene polymerized much faster and future efforts should be directed towards the use of exceptionally pure materials. Butadiene-acrylonitrile and acrylonitrile itself polymerized much more rapidly but exhibited a complex kinetic behavior. It was found difficult to produce true emulsion polymers with acrylonitrile itself although the emulsifier did change the course of the polymerization process and increase the rate considerably. G (monomer) values of more than 75,000 were readily obtained with pure acrylonitrile in "emulsion" systems.