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Polymerization of MMA catalyzed by different novel mixed ligand lanthanocene {(Cp) (Cl) LnSchiff‐base (THF)}, (COT)‐Ln(methoxyethylindenyl) (THF)/Al( i ‐Bu) 3 systems
Author(s) -
Yousaf Muhammad,
Huang JiUag,
Feng ZuoFeng,
Qian YanLong,
Sun JunQuan,
Pan ZhiDa
Publication year - 2000
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20000180519
Subject(s) - chemistry , catalysis , molar ratio , polymerization , methyl methacrylate , polymer chemistry , base (topology) , molar mass distribution , polymer , rare earth , ligand (biochemistry) , schiff base , metal , organic chemistry , mineralogy , mathematical analysis , biochemistry , receptor , mathematics
This article deals that the rare earth metal complexes along with Al ( i ‐Bu) 3 can catalyze the polymerization of methyl‐methacrylate (MMA) into high molecular weight poly(MMA) along with narrow molecular weight distributions (MWD). A typical example was mentioned in the case of {Cp(Cl) Sm‐Schiff‐base(THF)} which expresses maximum (conv. % = 55.46 and M n = 354 × 10 3 ) efficiency along with narrow MWD (M w /M n < 2) at 60°C. The resulting polymer was partially syndiotactic (>60%). The effect of the catalyst, temperature, catalyst/MMA molar ratio, catalyst/Al( i ‐Bu) 3 molar ratio on the polymerization of MMA at 60°C were also investigated.