**7. Conclusion**

At the optimal conditions, anionic polyacrylamide material was successfully synthesized as an aqueous free solvent dispersion with acrylamide (Am) and maghnite-Na+ (MMT-Na+ ) in aqueous solution of sodium hydroxide NaOH under microwave irradiation. The influencing factors on the polymerization reaction were studied, and the optimal reaction conditions were obtained. The characterization of anionic polyacrylamide was measured by IR and HNMR spectroscopy. The results indicated that, the polymerization was successful under microwave irradiation. In our previous papers, we already reported about polymerization catalyzed by maghnite-Na+ (Algerian MMT) this new nontoxic cationic catalyst exhibited higher efficiency via the polymerization of vinylic and hetero-cyclic monomers. The objectives of this work are the synthesis of anionic polyacrylamide of by the use of MMT-Na+ as catalyst. The interesting aspect of this new non-toxic catalyst is the environmentally friendly nature of the reaction because it does not imply the disposal of solvents or metal catalysts.
