CONCLUSION
The present study aimed to evaluate the influence of number of active
catalytic sites in molar distribution of polybutadiene. 1,3-butadiene
polymerizations were performed successfully in Aspen Plus 10 considering
1, 2, 3 and 4 catalytic sites.
It was concluded that temperature and pressure profiles are practically
not changed with a variation in the number of sites. Such profiles show
an increase until reaching a peak and then stabilize, showing similarity
with those already reported in the literature.
Comparing values of \(M_{n}\), \(M_{w}\) and PDI it can be
confirmed they are directly related with the grow of number of active
sites. Values of \(M_{n}\) range from 3.6x104 to
1.4x105, \(M_{w}\) range from
7.3x104 to 7.4x105 and PDI range
from 2.02 to 5.24. Besides that, graphs generated shows that the
dispersity increase with the variation and MWD is dislocated to the
right side.