Abstract
In this paper, super absorbent polymer was prepared through graft copolymerization by cellulose and acrylic acid (AA), acrylamide (AM), and butyl methacrylate (BMA) and its properties were determined. It showed that optimum reaction condition is the amount of cellulose, AA, AM and BMA is 10g, 4.5g, 2g and 1.5g respectively, the amount of initiator (potassium persulfate) and N,N'-methylene bisacrylamide is 0.01g and 0.012g, the pH value of AA after neutralization is 7. The water absorbency to distilled water, tap water and salt solution of super absorbent polymer which was prepared under these conditions is 770g/g, 113g/g and 86g/g respectively. The water retention rate of super absorbent polymer gel drops to 3% needs 130 hours under natural condition. It was expected that super absorbent polymer can be used for preservation processing of fruits.
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