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. 2020 Apr 27;5(18):10610–10625. doi: 10.1021/acsomega.0c01208

Table 3. Optimization of the Polymerization Conditions Using Ni1/MAOa.

run T (°C) t (min) Al/Ni PE (g) activityb Mwc Mw/Mnc Tm (°C)d
1 30 30 1500 5.64 5.64 7.13 2.0 85.4
2 30 30 2000 6.87 6.87 9.21 2.0 94.7
3 30 30 2500 7.93 7.93 9.35 2.3 92.7
4 30 30 3000 6.81 6.81 8.59 2.3 89.7
5 30 30 3500 5.78 5.08 7.93 2.2 86.5
6 20 30 2500 4.48 4.48 15.19 2.4 104.8
7 40 30 2500 5.31 5.31 5.35 2.1 69.8
8 50 30 2500 2.06 2.06 4.30 2.0 62.6
9 30 05 2500 1.21 7.25 7.44 2.2 85.7
10 30 15 2500 3.76 7.52 7.89 2.3 96.1
11 30 45 2500 10.04 6.69 10.63 2.5 97.0
12 30 60 2500 11.15 5.58 12.43 2.5 101.0
13e 30 30 2500 2.80 2.80 5.73 2.2 68.8
14f 30 30 2500 trace trace      
a

Conditions: 2.0 μmol Ni1, 100 mL toluene, and 10 atm of C2H4.

b

106 g of PE (mol of Ni)−1 h–1.

c

Mw: kg mol–1, determined by GPC.

d

Determined by DSC.

e

5 atm of C2H4.

f

1 atm of C2H4.