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Fe‐mediated ICAR ATRP of styrene and acrylonitrile in polyethylene glycol
Author(s) -
Wang GuoXiang,
Lu Mang,
Hou ZhaoHui,
Gao Yong,
Liu LiChao,
Wu Hu
Publication year - 2014
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.40135
Subject(s) - polymer chemistry , copolymer , acrylonitrile , azobisisobutyronitrile , styrene , monomer , polymerization , radical polymerization , chemistry , bulk polymerization , molar mass distribution , atom transfer radical polymerization , polyethylene glycol , materials science , polymer , organic chemistry
In this contribution, random copolymers of p(styrene‐ co ‐acrylonitrile) via initiators for continuous activator regeneration (ICAR) in atom transfer radical polymerization (ATRP) (ICAR ATRP) of styrene and acrylonitrile (SAN) were synthesized at 90°C in low molecular weight polyethylene glycol (PEG‐400) using CCl 4 as initiator, FeCl 3 ·6H 2 O as catalyst, succinic acid as ligand and thermal radical initiator azobisisobutyronitrile (AIBN) as thermal free radical initiator. In this system, well‐defined copolymer of SAN was achieved. The kinetics results showed that the copolymerization rate obeyed first‐order kinetics model with respect to the monomer concentration, and a linear increase of the molecular weights with the increasing of monomer conversion with narrow molecular weight distribution was observed in the range of 1.1–1.5. The conversion decreased with increasing the amount of FeCl 3 ·6H 2 O and increased with increasing the molar ratio of [St] 0 /[AN] 0 /[CCl 4 ] 0 and temperature. AIBN has a profound effect on the polymerization. The activation energy was 55.67 kJ mol −1 . The living character of copolymerization was confirmed by chain extension experiment. The resultant random copolymer was characterized by 1 H‐NMR and GPC. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40135.