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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 |
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| Authors: | YOUSAF Muhammad HUANG Ji-Ling FENG Zuo-FengQIAN Yan-LongLaboratory of Organometallic Chemistry East China University of Science and Technology Shanghai China SUN Jun-Quan PAN Zhi-DaMaterial and Chemical Engineering College Zhejiang University Hangzhou Zhejiang China |
| Institution: | YOUSAF,Muhammad HUANG,Ji-Ling FENG,Zuo-FengQIAN,Yan-LongLaboratory of Organometallic Chemistry,East China University of Science and Technology,Shanghai 200237,China SUN,Jun-Quan PAN,Zhi-DaMaterial and Chemical Engineering College,Zhejiang University,Hangzhou,Zhejiang 310027,China |
| Abstract: | 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 Mn = 354 × 103) efficiency along with narrow MWD (Mw/Mn < 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. |
| Keywords: | MMA polymerization novel mked ligand lan-thanocene complexes |
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