Synthesis and characterization of a poly(acrylic acid)‐graft‐methoxy poly(ethylene oxide) comblike copolymer |
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| Authors: | Yanling Luo Qianping Ran Shishan Wu Jian Shen |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People's Republic of China;2. Jiangsu Institute of Building Science, Nanjing 210008, People's Republic of China;3. College of Chemistry and Environment Science, Nanjing Normal University, Nanjing 210097, People's Republic of China |
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| Abstract: | 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 1H‐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 |
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| Keywords: | catalysts esterification synthesis |
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