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Effect of Inhibitors on Atom Transfer Radical Polymerization of MMA
Author(s) -
Hong Zhang,
DongMei Xu,
KeDa Zhang
Publication year - 2005
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.200590913
Subject(s) - chemistry , atom transfer radical polymerization , polymerization , hydroquinone , polymer chemistry , nitrobenzene , catalysis , methyl methacrylate , polymer , yield (engineering) , living free radical polymerization , living polymerization , cobalt mediated radical polymerization , molar mass distribution , photochemistry , induction period , radical polymerization , organic chemistry , materials science , metallurgy
Effect of a series of inhibitors as additives on atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) with FeCl 2 /PPh 3 as catalyst system was studied, including 2,4,6‐trinitrophenol (TNP), 4‐methoxyphenol (4‐MP), hydroquinone (HQ) and nitrobenzene (NB). It was found that TNP was the only efficient additive for ATRP among these inhibitors. In the presence of small amounts of TNP, the polymerization proceeded rapidly after induction period to yield the polymers with controlled molecular weights and narrow molecular weight distributions (MWD). The initiating efficiency of the modified catalyst system with TNP was increased. The mechanism was proposed and confirmed by the end group analysis of the polymer.