Preparation of poly(vinyl alcohol) hydrogel film with acrylic acid for selective absorption of heavy metal ions


A hydrogel film of poly (vinyl alcohol) (PVA), graft copolymerized with acrylic acid (AA) was prepared by using ceric ammonium sulfate (CAS) as an initiator in acidified aqueous medium. The reaction conditions were optimized. Fourier transform infrared (FTIR) spectra were used for the confirmation of grafting. Thermogravimetric analysis of PVA and a representative graft copolymer were studied. A probable structure of the hydrogel has been suggested. The absorption of heavy metal ions (e.g. Ni2+, Co2+, Hg 2+, Pb2+) were investigated. Sol-gel behaviour of the hydrogel has been studied. © Oxford & IBH Pub. Co. Pvt. Ltd.

Publication Title

Journal of Polymer Materials

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