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Graft copolymerization of methyl acrylate onto chitosan initiated by potassium diperiodatoargentate (III)
Author(s) -
Liu Zhenghao,
Wu Guangchen,
Liu Yinghai
Publication year - 2006
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.23834
Subject(s) - chitosan , copolymer , thermogravimetric analysis , polymer chemistry , grafting , methyl acrylate , thermal stability , monomer , materials science , aqueous solution , solubility , chemistry , solvent , butyl acrylate , acrylate , nuclear chemistry , organic chemistry , polymer
A novel efficient redox system—potassium diperiodatoargentate [Ag(III)]‐chitosan—was employed to initiate the graft copolymerization of methyl acrylate (MA) onto chitosan in aqueous alkali solution. The effects of reaction variables such as monomer concentration, initiator concentration, reaction time, and temperature were investigated and the grafting conditions were optimized. The structures and the thermal stability of chitosan and chitosan‐ g ‐PMA were characterized by infrared spectroscopy (IR) and thermogravimetric analysis (TGA). The solubility of chitosan‐ g ‐PMA in some mixed solvent was tested. The graft copolymer was shown to be an effective compatibilizer in blends of poly(vinyl chloride) (PVC) and chitosan. Finally, a mechanism is proposed to explain the formation of radicals and the initiation. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 799–804, 2006