Transition-Metal Catalysts for Olefin and Lactone Polymerization
This community develops molecular catalysts to convert simple monomers into polyethylene, polypropylene, and biodegradable plastics, focusing on controlling molecular weight and structure.
The work centers on the synthesis and characterization of organometallic complexes, particularly those based on nickel, titanium, and rare-earth metals. Recurring themes include ethylene polymerization and copolymerization with polar monomers, as well as ring-opening polymerization of cyclic esters like caprolactone and lactide. Researchers investigate ligand design, chain transfer mechanisms, and the resulting stereomicrostructure of the polymers. The goal is to create highly active, selective catalysts that produce polymers with specific mechanical, thermal, or biodegradable properties, moving beyond traditional Ziegler-Natta systems to more precise molecular control.
The community is most heavily represented in titanium research, accounting for 1.2% of all titanium studies, followed by zirconium at 1.7% and molybdenum at 1.0%. Titanium also contributes the highest absolute number of papers to this group, with 3,633 entries.
The community comprises 24,812 papers, with the highest volume published in Organometallics, Inorganic Chemistry, and the Journal of the American Chemical Society.
Recent work continues to focus on nickel-catalyzed olefin polymerization, including the copolymerization of ethylene with acrylates and the synthesis of functionalized polyolefins. Other recent studies address the biodegradability of poly(l-lactide) copolymers and the toxicity of tin-based polymerization catalysts.