Premium
Atom transfer radical copolymerization of glycidyl methacrylate and methyl methacrylate
Author(s) -
Neugebauer Dorota,
Bury Katarzyna,
Wlazło Michał
Publication year - 2011
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.35234
Subject(s) - glycidyl methacrylate , polymer chemistry , copolymer , atom transfer radical polymerization , monomer , dispersity , methyl methacrylate , differential scanning calorimetry , materials science , molar mass distribution , glass transition , tacticity , radical polymerization , polymer , polymerization , composite material , physics , thermodynamics
Glycidyl methacrylate (GMA) and methyl methacrylate (MMA) copolymers were synthesized by atom transfer radical polymerization (ATRP). The effect of different molar fractions of GMA, ranging from 0.28 to 1.0, on the polymer polydispersity index (weight‐average molecular weight/number‐average molecular weight) as the indicator of a controlled process was investigated at 70°C, with ethyl 2‐bromoisobutyrate as an initiator and 4,4′‐dinonyl‐2,2′‐bipyridyne (dNbpy)/CuBr as a catalyst system in anisole. The monomer reactivity ratios ( r values) were obtained by the application of the conventional linearization Fineman–Ross method ( r GMA = 1.24 ± 0.02 and r MMA = 0.85 ± 0.03) and by the Mayo–Lewis method ( r GMA = 1.19 ± 0.04 and r MMA = 0.86 ± 0.03). The molecular weights and polydispersities of the copolymers exhibited a linear increase with GMA content. The copolymer compositions were determined by 1 H‐NMR and showed a domination of syndiotactic structures. The glass‐transition temperatures ( T g ) of the copolymers analyzed by differential scanning calorimetry (DSC) decreased in the range 105–65°C with increasing GMA units. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012