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Synthesis and characterization of a poly(acrylic acid)‐ graft ‐methoxy poly(ethylene oxide) comblike copolymer
Author(s) -
Luo Yanling,
Ran Qianping,
Wu Shishan,
Shen Jian
Publication year - 2008
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.28272
Subject(s) - copolymer , polymer chemistry , ethylene oxide , acrylic acid , grafting , tetrahydrofuran , materials science , solvent , sulfonic acid , fourier transform infrared spectroscopy , oxide , catalysis , toluene , condensation reaction , ethylene , chemistry , chemical engineering , organic chemistry , polymer , engineering , composite material , metallurgy
A methoxy poly(ethylene oxide) (MPEO) grafted poly(acrylic acid) (PAA) comblike copolymer was synthesized by the direct condensation of MPEO onto the PAA backbone in the presence of dicyclohexyl dimethylcarbodiimide (DCC) and 4‐dimethylaminopyridine (DMAP). Its chemical structure was characterized by Fourier transform infrared and 1 H‐NMR spectroscopies. The effects of different catalysts, solvents, reaction temperatures, and reaction times on the grafting degree of the PAA‐ g ‐MPEO comblike copolymer were investigated. Compared to p ‐toluene sulfonic acid, DMAP/DCC as a catalyst markedly increased the grafting degree. The optimum reaction conditions were a tetrahydrofuran/water mixture solvent, a reaction temperature of 50°C, and a reaction time of 168 h. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008