Polyethylenes A, B, and C from three sources are to be blended to achieve a weight-average molecular weight of 210,000 and a polydispersity index (PDI) of 3.0. How much of each polymer should be used to obtain 10,000 kg blend?
Polyethylene
A
B
C
Weight-average mol. wt. A = 130,000 B = 220,000 C = 400,000
PDI A = 2.50 B = 2.00 C = 2.50
