Muhammad YOUSAF, Aftab Ahmad CHATHA, Abdul JABBAR

Role of Tridentate Schiff Base and Methoxyethylindenyl Derivatives of Lanthanocene Complexes for the Synthesis of High Molecular Weight Polymethyl Methacrylate (PMMA)

Different mixed ligand lanthanocene complexes along with Al(i-Bu)3 are capable of synthesizing partially syndiotactic high molecular weight polymethylmethacrylate. The Schiff base derivative of mixed ligand lanthanocene complexes (1-4) showed better efficiency (Mv = 227 \times 103-354 \times 103) compared to the methoxyethylindenyl derivative of mixed ligand lanthanocene complexes (5-9) (Mv = 72 \times 103, 172 \times 103). The effects of the catalyst, temperature, catalyst/MMA molar ratio, and catalyst/Al(i-Bu)3 molar ratio on the polymerization of MMA at 60 °C suggested that ligand size and radius of rare earth metals play an important role in determining the activity of the catalyst.

Anahtar Kelimeler:

Tridentate Schiff base, lanthanocene, methoxyethylindene lanthanocene, MMA, polymerization

Role of Tridentate Schiff Base and Methoxyethylindenyl Derivatives of Lanthanocene Complexes for the Synthesis of High Molecular Weight Polymethyl Methacrylate (PMMA)

Keywords:

Tridentate Schiff base, lanthanocene, methoxyethylindene lanthanocene, MMA, polymerization,

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