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Fe‐mediated SET‐LRP of MMA and St in the presence of air
Author(s) -
Wang Guoxiang,
Lu Mang
Publication year - 2012
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4203
Subject(s) - copolymer , living polymerization , polymer chemistry , dispersity , polymerization , methyl methacrylate , materials science , chain transfer , monomer , catalytic chain transfer , styrene , radical polymerization , dimethylformamide , living free radical polymerization , solvent , polymer , chemistry , organic chemistry , composite material
In this work, well‐defined homopolymers of methyl methacrylate (PMMA) and styrene (PSt) were prepared via single‐electron‐transfer living radical polymerization using CCl 4 as initiator and Fe(0)/ N , N , N ′, N ′‐tetramethyl‐1,2‐ethanediamine as catalyst. The polymerization was conducted at 25 °C in N , N ‐dimethylformamide in the presence of air. It proceeded in a ‘living’ manner, as indicated by the first‐order kinetics behavior, and the linear increase of the number‐average molecular weight ( M n, GPC ) with conversion was close to the theoretical M n, theory . Solvent and additives have a profound effect on the polymerization. In addition, the PMMA and PSt obtained remained of low dispersity. The chain‐end functionality of the obtained homopolymer of PMMA was characterized by proton nuclear magnetic resonance. A block copolymer of P(MMA‐ block ‐St) was achieved by using the obtained PMMA as macroinitiator. The living characteristics were further demonstrated by chain extension experiments. Copyright © 2012 Society of Chemical Industry