Synthesis of montmorillonite / poly ( acryl ic acid) super absorbent resin

Alkylammonium ion was used to dispose sodium type montmorillonite (Na-MMT) to prepare organicmontmorillonite (OMMT) . Montmorillonite/ poly(acrylic acid) (MMT/ PAA) nanocomposites were synthesized bythe method of intercalation. The st ructure of the nanocomposite was characterized by FTIR and X-ray diff raction.The effect s of the amount of OMMT , initiator , crosslinker and size of nanocomposites on the absorbency of nanocomposites were investigated. The result s show that the intercalation is successful. Montmorillonite disperses in copolymer molecules at nano size af ter copolymerization and the absorbency of the nanocomposite is much higher thanthat of the pure PAA. The highest absorbencies of nanocomposites for distilled water and saline water are 1200 g·g^-1and 121 g·g ^-1 , respectively.