© Journal Of Chemical Society Of Nigeria (jcsn) . 2011. Vol. 36 No. 1
Publisher: Chemical Society of Nigeria
Grafting of N,N-Dimethylacrylamide On Gum Arabic
D. E. Ogbeifun, F. E. Okieimen, J. M. Okuo
KEYWORDS: Gum Arabic, polyN,N-dimethyl acrylamide, grafting, copolymerisation.
ABSTRACT:Graft copolymerisation of N,N-dimethyl acrylamide onto purified gum Arabic obtained from Ketu market, Lagos Nigeria was done in a homogeneous system using ceric ion initiator at 25oC . The highest graft level was obtained at 4.0mM ceric ion concentration. The characterisation of the grafted products by means of FTIR and Scanning Electron Microscopy furnished the evidence of grafting N,N-dimethyl acrylamide onto gum Arabic. The flocculation behaviour of three of the grafted copolymers were studied in 0.25 wt% Kaolin suspension. It was found that the grafted copolymer with the highest molecular weight was the most efficient.
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