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
H. BADARUDDIN AHMAD
AMEER FAWAD ZAHOOR
MUHAMMAD KALEEM KHOSA
SYED SARWAR ALAM

DOI

-

Abstract

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 10^3-354 \times 10^3) compared to the methoxyethylindenyl derivative of mixed ligand lanthanocene complexes (5-9) (Mv = 72 \times 10^3, 172 \times 10^3). 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.

Keywords

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

First Page

471

Last Page

477

Recommended Citation

YOUSAF, MUHAMMAD; CHATHA, AFTAB AHMAD; JABBAR, ABDUL; AHMAD, H. BADARUDDIN; ZAHOOR, AMEER FAWAD; KHOSA, MUHAMMAD KALEEM; and ALAM, SYED SARWAR (2007) "Role of Tridentate Schiff Base and Methoxyethylindenyl Derivatives of Lanthanocene Complexes for the Synthesis of High Molecular Weight Polymethyl Methacrylate (PMMA)," Turkish Journal of Chemistry: Vol. 31: No. 4, Article 10. Available at: https://journals.tubitak.gov.tr/chem/vol31/iss4/10