Premium
Ru(II)‐mediated living radical polymerization: block and random copolymerizations of N,N ‐dimethylacrylamide and methyl methacrylate
Author(s) -
Senoo Masahide,
Kotani Yuzo,
Kamigaito Masami,
Sawamoto Mitsuo
Publication year - 2000
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200007)157:1<193::aid-masy193>3.0.co;2-m
Subject(s) - copolymer , methyl methacrylate , polymer chemistry , monomer , polymerization , molar mass distribution , chemistry , polymer , radical polymerization , ruthenium , living polymerization , materials science , catalysis , organic chemistry
RuCl 2 (PPh 3 ) 3 led to living radical copolymerization of N,N ‐dimethylacrylamide (DMAA) and methyl methacrylate (MMA) in conjunction with a halide‐initiator (R‐X; CHCl 2 COPh, CCl 3 Br) and Al(O i ‐Pr) 3 in toluene at 80°C. Both the monomers were polymerized at almost the same rate into random copolymers, where the number‐average molecular weights ( M n ) increased in direct proportion to weight of the obtained polymers, and the molecular weight distributions (MWDs) were narrow throughout the reactions ( M w / M n = 1.2‐1.6). MMA was consumed faster in the copolymerization than in the homopolymerization, which was due to the interaction of DMAA with the ruthenium complex. The Ru(II)‐based initiating system was also effective in block copolymerization of DMAA and MMA.