For step-growth polymer systems of general type "AfiBgi", a fast method is derived to compute the MSD and the MWD. The figure shows the full MWD curves of system "A1B1¿+¿B1¿+¿A2¿+¿B3" with pA[gel]¿=¿0.969877 at pA¿=¿0.964, 0.967, 0.969. Blue: calculated using recurrence scheme. Red: calculated using analytic approximation.
Hillegers, L. T. M. E., Blokhuis, A., & Slot, J. J. M. (2012). A fast method to compute the MSD and MWD of polymer populations formed by step-growth polymerization of polyfunctional monomers bearing A and B coreactive groups. Macromolecular Theory and Simulations, 21(8), 553-564. https://doi.org/10.1002/mats.201200027