Abstract
AbstractA model is proposed for the computation of MWD and CBD when the simultaneous formation of LCB and SCB is possible. LCBs are produced through incorporation of unsaturated polymer chains. SCBs are produced through chain running as a series of spontaneous chain transfer and reinsertion steps. The model was solved numerically with the help of orthogonal adaptive collocation techniques. It is shown that ten collocation points are sufficient to provide accurate numerical solutions for the evolution of MWDs and CBDs. The model can be used successfully to represent experimental data available for ethylene polymerizations performed with nickel catalysts and butadiene polymerizations performed with neodymium catalysts. magnified image
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