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Synthesis of Ultrahigh Molecular Weight Polyethylene Using MgO/MgCl 2 /TiCl 4 Core–Shell Catalysts
Author(s) -
Bando Yusuke,
Chammingkwan Patchanee,
Terano Minoru,
Taniike Toshiaki
Publication year - 2018
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201800011
Subject(s) - catalysis , polyethylene , dispersion (optics) , shell (structure) , yield (engineering) , morphology (biology) , materials science , chemical engineering , ultra high molecular weight polyethylene , nanoparticle , core (optical fiber) , polymer chemistry , chemistry , composite material , nanotechnology , organic chemistry , physics , biology , optics , genetics , engineering
Abstract In this study, MgO/MgCl 2 /TiCl 4 core–shell catalysts are employed for the production of ultrahigh molecular weight polyethylene (UHMWPE) particles, motivated by their advantages including simple preparation, ease of morphology control, and a dramatically reduced Cl content. It is found that the MgO/MgCl 2 /TiCl 4 core–shell catalysts can provide UHMWPE at a reasonable activity, but the agglomeration of the catalyst particles leads to poor morphology of the UHMWPE. The dispersion problem is largely alleviated by modifying MgO nanoparticles with methyl oleate (MO). Thus, the MO‐modified MgO/MgCl 2 /TiCl 4 core–shell catalyst successfully affords UHMWPE particles of 100–200 µm at a high yield of 8670 g‐PE g‐Cat −1 .