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"Journal of Catalysis" by Dai Shengyu's research group of Anhui University: Hybrid sandwich strategy for convenient preparation of ultra-high branched polyethylene materials

 Last Update: 2022-08-11
 Source: Internet
 Author: User

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The output of polyolefin materials ranks first in the synthetic polymer materia.

In the research results, Shengyu Dai's group designed and synthesized a series of "sandwich" or "semi-sandwich" α-diimine ligands and their corresponding nickel-palladium complexes with only one-sided large steric hindran.

FigureComparison of polyethylene branching obtained from hybrid nickel-sandwich catalysts and three other types of nickel catalysts that are good at chain walking under the same conditions (30 degrees, 6 atmospheres)

FigureHybrid sandwich nickel catalyst catalyzed ethylene polymerization to prepare ultra-branched polyethylene

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