Abstract
A novel superabsorbent polymer composite based on mung bean starch was prepared via emulsion polymerization technique of partially neutralized acrylic acid grafted onto waste polystyrene chain using ammonium persulfate and N,N′-methylenebisacrylamide as initiator and crosslinker, respectively. Fourier transform infrared confirmed the presence of mung bean starch in the grafting of polyacrylic acid and waste polystyrene. The introduction of starch in superabsorbent polymer greatly enhanced the swelling capacity with the optimum absorbency recorded at 59.3 g/g for 20% of starch loading. Meanwhile, thermogravimetric analysis showed enhance in thermal stability upon incorporation of mung bean starch.
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