Figure 6 Mass distribution of polybutadiene considering three catalytic sites.
Now comparing Figures 5 and 6, it can be seen that bimodality remains present regardless of having more active centres. Again, there is an increase in the expressive polydispersity index to 4.13 indicating that the increase in the number of active centres is directly linked to the widening of the molar mass distribution. Regarding the average molar masses, \(M_{n}\) and \(M_{w}\) increased significantly compared to simulations with one and two active centers, where the average molar masses are in the order of 105. Finally, for comparison purposes, the simulation with four active centres that are shown in Figure 7.