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

Muhammad YOUSAF; Aftab Ahmad CHATHA; Abdul JABBAR

Article Details

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

Publisher:

TUBITAK

Journal:

Turkish Journal of Chemistry 2007 Vol.31 Issue 4, pp.471-477

Document Type:

Article

Publication Date:

3/2007

Document Language:

Turkish

Document ID (Org No.):

2000728682

Frequency:

Bimonthly

eISSN:

1303-6130

pISSN:

1300-0527

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 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.

 

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.

Article Details

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

Publisher: TUBITAK

Journal: Turkish Journal of Chemistry 2007 Vol.31 Issue 4, pp.471-477

Document Type: Article

Publication Date: 3/2007

Document Language: Turkish

Document ID (Org No.): 2000728682

Frequency: Bimonthly

eISSN: 1303-6130

pISSN: 1300-0527

Issues

Authors:

Muhammad YOUSAF | Aftab Ahmad CHATHA | Abdul JABBAR

Publisher:

TUBITAK

Journal:

Turkish Journal of Chemistry 2007 Vol.31 Issue 4, pp.471-477

Document Type:

Article

Publication Date:

3/2007

Document Language:

Turkish

Document ID (Org No.):

2000728682

Frequency:

Bimonthly

eISSN:

1303-6130

pISSN:

1300-0527