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Photo‐Induced atom transfer radical polymerization with nanosized α‐Fe 2 O 3 as photoinitiator
Author(s) -
Liu Lichao,
Lu Mang,
Hou ZhaoHui,
Wang GuoXiang,
Yang ChangAn,
Liang EnXiang,
Wu Hu,
Li XianLei,
Xu YiXue
Publication year - 2015
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.42389
Subject(s) - photoinitiator , atom transfer radical polymerization , polymer chemistry , polymerization , methyl methacrylate , materials science , gel permeation chromatography , ethylene glycol , molar mass distribution , radical polymerization , bulk polymerization , living polymerization , triphenylphosphine , chemistry , polymer , catalysis , organic chemistry , composite material , monomer
Photo‐induced atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) was achieved in poly(ethylene glycol)‐400 with nanosized α‐Fe 2 O 3 as photoinitiator. Well‐defined poly(methyl methacrylate) (PMMA) was synthesized in conjunction with ethyl 2‐bromoisobutyrate (EBiB) as ATRP initiator and FeCl 3 ·6H 2 O/Triphenylphosphine (PPh 3 ) as complex catalyst. The photo‐induced polymerization of MMA proceeded in a controlled/living fashion. The polymerization followed first‐order kinetics. The obtained PMMA had moderately controlled number‐average molecular weights in accordance with the theoretical number‐average molecular weights, as well as narrow molecular weight distributions ( M w / M n ). In addition, the polymerization could be well controlled by periodic light‐on–off processes. The resulting PMMA was characterized by 1 H nuclear magnetic resonance and gel permeation chromatography. The brominated PMMA was used further as macroinitiator in the chain‐extension with MMA to verify the living nature of photo‐induced ATRP of MMA. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42389.