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    ARTICLE

    Green Synthesis for Lignin Plasticization: Aqueous Graft Copolymerization with Methyl Methacrylate

    Sinto Jacob1, Manjusri Misra1,2, Amar Mohanty1,2,*

    Journal of Renewable Materials, Vol.1, No.2, pp. 154-165, 2013, DOI:10.7569/JRM.2012.634107

    Abstract This study investigated the use of potassium persulfate (KPS) as an initiator for the grafting of methyl methacrylate (MMA) onto softwood kraft lignin. Ammonium iron (II) sulfate hexahydrate was used as a catalyst to overcome the inherent inhibition of lignin to free radical grafting and to make lignin copolymer under mild conditions using an aqueous medium. The infl uence of temperature, initiator concentration, time of reaction and monomer concentration on percentage of grafting were studied. A maximum of 31% grafting was achieved at 55ο C. Graft copolymer was identifi ed from the Fourier transform infrared More >

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