The poly(propylene oxide-<i>co</i>-ethylene oxide) gradient is controlled by the polymerization method: determination of reactivity ratios by direct comparison of different copolymerization models

Abstract

An investigation of the copolymerization of EO and PO by <italic>in situ</italic>¹H NMR spectroscopy reveals striking differences in the monomer gradient, depending on the polymerization method.