Polyethylene compositions, articles thereof, and methods thereof

A method of making a polyethylene composition, the method comprising:

• introducing ethylene, an optional comonomer, a diluent, a catalyst, and 100 ppm to 500 ppm of a cocatalyst (on the basis of amount of diluent) to a loop reactor under conditions effective to produce a slurry comprising the polyethylene composition;
• continuously discharging a portion of the slurry from the loop reactor as effluent comprising the polyethylene composition;
• flashing the effluent to vaporize diluent and form a concentrated effluent comprising the polyethylene composition;
• and
• condensing the vaporized diluent,
• wherein the polyethylene composition comprises 80 wt % or greater ethylene-derived units and has:
• a density within the range from 0.935 to 0.975 g/cm3;
• a melt index (I2.16) of 2 g/10 min to 4 g/10 min;
• a weight-average molecular weight (Mw) of 90,000 g/mol to 300,000 g/mol;
• a number-average molecular weight (Mn) of 15,000 g/mol to 30,000 g/mol;
• a z-average molecular weight (Mz) of 700,000 to 3,000,000 g/mol;
• an Mw/Mn value of 9 to 12;
• an Mz/Mw value of 5 to 10;
• an Mz/Mn value of 65 to 80;
• a g′ value of 0.6 to 0.85;
• and
• a unimodal molecular weight distribution.