Syndiospecific styrene polymerization with CpTiCl3/MAO: Effects of the order of reactant addition on polymerization and polymer properties

Abstract Syndiospecific styrene (St) polymerization, catalyzed by the CpTiCl 3 /methylaluminoxane (MAO) system, was investigated using two different activation procedures. The polymerization parameters included polymerization time, temperature (∼25–100°C), ratio of [Al]/[Ti] (∼100–1000), and catalyst precursor concentration (∼0.5–10.0 × 10 −4 mol Ti/L). It was found that adding reactants in the order of (CpTiCl 3 + MAO) + St (Injection of …