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Synthesis and characterization of PMMA‐ b ‐PBMA block copolymers by atom transfer radical polymerization
Author(s) -
FernándezGarcía Marta,
De La Fuente José Luis,
FernándezSanz Marina,
Madruga Enrique López
Publication year - 2002
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.10471
Subject(s) - atom transfer radical polymerization , copolymer , polymer chemistry , materials science , benzonitrile , methyl methacrylate , differential scanning calorimetry , polymerization , methacrylate , size exclusion chromatography , chemistry , polymer , organic chemistry , physics , composite material , thermodynamics , enzyme
The synthesis of diblock copolymers using atom transfer radical polymerization, ATRP, of n ‐butyl methacrylate, BMA, and methyl methacrylate, MMA, is reported. These copolymers were prepared from 2‐bromoisobutyryl‐terminated macroinitiators of poly(MMA) and poly(BMA), using copper chloride, CuCl,/ N,N,N′,N″,N″ ‐pentamethyldiethylenetretramine, PMDETA, as the catalyst system, at 100°C in bulk and in benzonitrile solution. The block copolymers were characterized by means of size‐exclusion chromatography, SEC, and 1 H‐NMR spectroscopy. The SEC analysis of the synthesized diblock copolymers confirmed important differences in the molecular weight control depending on the reaction medium (solvent effect) and the chemical structure of the macroinitiator used. In addition, differential scanning calorimetry, (DSC) measurements were performed, showing for all the copolymers a phase separation. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 84: 2683–2691, 2002