Long-chain branching in slurry polymerization of ethylene with zirconocene dichloride/modified methylaluminoxane

We report an experimental investigation on long chain branching (LCB) in ethylene slurry polymerization with bis(cyclopentadienyl) zirconium dichloride (Cp2ZrCl2)/modified methylaluminoxane (MMAO) using a semi-batch reactor. The effects of the reaction temperature, pressure, MMAO concentration, and catalyst feeding method on the long chain branching density (LCBD, number of branches per 10 000 carbons), polymer molecular weight, and shear …