ATRP by continuous feeding of activators: Limiting the end-group loss in the polymerizations of methyl methacrylate and styrene
作者： Yu Wang , Alec Clay , Mary Nguyen
DOI: 10.1016/J.POLYMER.2019.122097
关键词: Styrene 、 Polymer chemistry 、 End-group 、 Amine gas treating 、 Chemistry 、 Mole fraction 、 Halogen 、 Equilibrium constant 、 Methyl methacrylate 、 Monomer
摘要: Abstract Atom transfer radical polymerizations (ATRP) of methyl methacrylate (MMA) and styrene (St) were conducted by continuous feeding Cu(I)/TPMA activators (TPMA: tris(2-pyridylmethyl)amine). Though the ATRP equilibrium constants are significantly different, MMA St both well-controlled under similar reaction conditions giving polymers with relatively high monomer conversion, i.e., > 70 % , narrow molecular weight distributions, M w ∕ n 1 . 2 in most cases. By reducing total amount Cu(I) used these polymerizations, mole percent end-group loss ( T mol% ) could be limited since without activator regeneration should not exceed molar ratio between initiator according to principle halogen conservation.
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