Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 101, Issue 1, Pages 799-804Publisher
WILEY
DOI: 10.1002/app.23834
Keywords
potassium diperiodatoargentate [Ag(III)]; chitosan-g-PMA; graft copolymer; blending
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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. (c) 2006 Wiley Periodicals, Inc.
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