The organic/inorganic superabsorbent resin was synthesized by aqueous solution polymerization method,using acrylic acid(AA) and 2-acrylamido-2-methylpropane sulfonic acid as monomers,poly(vinyl alcohol)(PVA) as synthesized polymer,diatomite(DT) as inorganic clay,N,N＇-methylenebisacrylamide as crosslinker and potassium persulfate as initiator.The structure and morphology of the resin was characterized by FT-IR,SEM and TGA,respectively.Meanwhile,the effects of content of crosslinker,initiator,AMPS and DT on the absorbency were investigated in details.Under optimum condition,the absorbency was up to 1574g/g in distilled water and 101g/g in 0.9wt % NaCl solution.The moisture absorption of organic superabsorbent resin exposed to air was 20 to 30 times that of the organic/inorganic superabsorbent resin,indicating the excellent moisture resistance of the organic/inorganic composite superabsorbent resin.And organic/inorganic superabsorbent resin had better absorbency capacity in various saline solutions with different cations(Na+,Ca2+,Fe3+).
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基金资助
国家自然科学基金(51203127);湖北省教育厅优秀中青年项目(20121509);武汉市科技局青年科技晨光计划项目(201050231049);绿色化工过程省部共建教育部重点实验室开放基金项目(GCP201003);武汉工程大学科学研究基金(10092012)
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