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《Journal of Guilin Institute of Technology》 2004-02
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Synthesis of bentonite-superabsorbent composite

LONG Fei,ZHANG Lan,HE Shun-ai,YU Xin-gang (Department of Materials and Chemistry Engineering,Guilin Institute of Technology,Guilin 541004,China)  
With ammonium persulfate and N,N ' -Methylene bisacrylamide as an initiator and crosslink agent respectively, a bentonite-superabsorbent composite is synthesized by means of aqueous solution copolymerization. The composite is prepared by acrylamide and acrylic acid at the presence of bentonite suspension .The factors of influence on water and 0.9% NaCl aqueous solution absorption is studied. The suitable manufacturing condition of the composite is set down in a series of experiments. The influence of the amount of initiator , crosslink agent and bentonite for the composite are investigated .The absorption of the composite is 1 100 and 110 in the case of distilled water and 0.9% NaCl aqueous solution respectively. It is found that the composite with a good water retention and heat resistance is significant for reducing the product cost and improving the comprehensive property of the composite as the amount of initiator, crosslink agent and bentonite is 0.9%,10%,0.6‰ in proportion to monomer respectively.
【Fund】: 广西区科技厅资助项目(桂科攻022801347)
【CateGory Index】: TB34
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