Achieving High Conversions in Nitroxide-Mediated Living Styrene Miniemulsion Polymerization

摘要

Nitroxide-mediated living radical polymerizations of styrene were run in miniemulsion. Using a modified miniemulsion process that does not require the use of a volatile costabilizer, near complete conversions could be achieved in 2-3 hours while preserving narrow molecular weight distributions and a high degree of chain livingness. Increased rates and final conversions were achieved by semi-batch addition of the nitroxide scavenger ascorbic acid.