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Facile “Living” Radical Polymerization of Methyl Methacrylate in the Presence of Iniferter Agents: Homogeneous and Highly Efficient Catalysis from Copper(II) Acetate
Author(s) -
Jiang Hongjuan,
Zhang Lifen,
Jiang Xiaowu,
Bao Xiaoguang,
Cheng Zhenping,
Zhu Xiulin
Publication year - 2014
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201400204
Subject(s) - polymerization , monomer , polymer chemistry , radical polymerization , methyl methacrylate , living polymerization , molar mass distribution , solution polymerization , chain transfer , living free radical polymerization , bulk polymerization , kinetics , catalysis , chemistry , materials science , polymer , organic chemistry , physics , quantum mechanics
A facile homogeneous polymerization system involving the iniferter agent 1‐cyano‐1‐methylethyl diethyldithiocarbamate (MANDC) and copper(II) acetate (Cu(OAc) 2 ) is successfully developed in bulk using methyl methacylate (MMA) as a model monomer. The detailed polymerization kinetics with different molar ratios (e.g., [MMA] 0 /[MANDC] 0 /[Cu(OAc) 2 ] 0 = 500/1/x (x = 0.1, 0.2, 0.5, 1.0)) demonstrate that this system has the typical “living”/controlled features of “living” radical polymerization, even with ppm level catalyst Cu(OAc) 2 , first order polymerization kinetics, a linear increase in molecular weight with monomer conversion and narrow molecular weight distributions for the resultant PMMA. 1 H NMR spectra and chain‐extension experiments further confirm the “living” characteristics of this process. A plausible mechanism is discussed.