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

Authors : Muhammad YOUSAF, Aftab Ahmad CHATHA, Abdul JABBAR

Pages : 471-477

View : 17 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Different mixed ligand lanthanocene complexes along with Alinsert ignore into journalissuearticles values(i-Bu);3 are capable of synthesizing partially syndiotactic high molecular weight polymethylmethacrylate. The Schiff base derivative of mixed ligand lanthanocene complexes insert ignore into journalissuearticles values(1-4); showed better efficiency insert ignore into journalissuearticles values(Mv = 227 \times 103-354 \times 103); compared to the methoxyethylindenyl derivative of mixed ligand lanthanocene complexes insert ignore into journalissuearticles values(5-9); insert ignore into journalissuearticles values(Mv = 72 \times 103, 172 \times 103);. The effects of the catalyst, temperature, catalyst/MMA molar ratio, and catalyst/Alinsert ignore into journalissuearticles values(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.
Keywords : Tridentate Schiff base, lanthanocene, methoxyethylindene lanthanocene, MMA, polymerization