Molcular Weight Distribution in Di Metal Cyanide Catalyzed Polymerization 1: Fundamental Distribution for Length Dependent Propagation Constant and Segments

Di metal cyanide (DMC) catalyzed living polymerization is characterized by a) the “catch-up” kinetics with a length dependent propagation rate constant k P ≈ n − 2 (n: chain length), favoring growth of small molecules and b) segmental caused repeated attachment detachment growing end to catalyst site. Whereas inverse square law reduces polydispersity, in segments increases it. Analytic expressions molecular weight distributions (MWD) are given for 0 , 1 . To include segments, theory originally developed quasi polymerizations generalized arbitrary number as well MWD themselves. General simple relationships allow calculating moments composite terms underlying distributions.