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《Polymeric Materials Science & Engineering》 2005-03
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STUDY ON THE PREPARATION AND ABSORBENCY IN SALINE SOLUTIONS OF POLYACRYLAMIDE/ ATTAPULGITE SUPERABSORBENT COMPOSITES

ZHANG Jun-ping~(1,2), LIU Rui-feng~(1,2), LI An~1, WANG Ai-qin~1 (1.Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; 2.Graduate School of the Chinese Academy of Sciences, Beijing 100049, China)  
In this paper, superabsorbent composites, polyacrylamide/attapulgite (PAMA), were prepared by aqueous solution polymerization. The factors that influence water absorbency of the composites, such as initial monomer concentration, amount of crosslinker, initiator and attapulgite were studied. The mechanism of graft-copolymerization of acrylamide onto attapulgite and the morphology of the composites were also investigated by FT-IR and SEM, respectively. Moreover, the swelling behavior of the composite in aqueous salt solutions was studied. The results indicate that the composite acquires the water absorbency of 2645 g/g and 112 g/g in distilled water and in (0.9%)NaCl solutions when the initial monomer concentration, amount of attapulgite, crosslinker and initiator is (0.14) g/mL, 10%, (0.10%) and (0.40%), respectively and the salt-resistant property of the superabsorbent is improved greatly.
【Fund】: 科技部863(2002AA6Z0310071);; 交通部西部交通建设项目(200331836232)资助
【CateGory Index】: TQ324.8
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