Study of Heterogeneity of Ethylene/1-Octene Copolymers Synthesized with Zirconium and Titanium Complexes Bearing Diamine-bis(phenolate) Ligands.

ABSTRACT: A series of ethylene/1-octene copolymers synthesized with diamine-bis(phenolate) complexes activated with Al(ⁱBu)₃/[Ph₃C][B(C₆F₅)₄] were subjected to preparative temperature rising elution fractionation (TREF). The complexes used differed in the type of metallic center (Zr or Ti) or the amine donor in the pendant arm of the ligand (NMe₂ or NⁱPr₂). The obtained fractions were then characterized via FTIR, DSC and GPC methods. It was found that all the copolymers had very broad chemical composition distributions, and the most heterogeneous was the copolymer produced by the titanium complex bearing a ligand with the NⁱPr₂ donor group. The difference in t

SUBMITTER: Bialek M 

PROVIDER: S-EPMC10857099 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature