The hydrotalcite (HT) synthesized with urea method was used to prepare intercalated HT (SMAS-HT) by using methyl allyl sulfonate (SMAS) as an intercalation agent.A novel poly (acrylic acid-co-acrylamide)/HT nanocomposite superabsorbent was prepared by inverse polymerization
using N
N′-methylenebisacrylamide (NMBA) as a crosslinking agent and potassium persulfate (KPS) as an initiator.The structure and morphology were characterized by FTIR
XRD and SEM.The influences of the amount of SMAS-HT on the water (salt) absorbency were studied.The results showed that the intercalation was successful and SMAS-HT was completely exfoliated after polymerization.Adding a small amount of SMAS-HT could effectively improve the water (salt) absorbency of nanocomposite superabsorbents.The nanocomposite superabsorbents had their highest water (salt) absorbency when the content of SMAS-HT was 3.0%(mass).