Structural Investigation: Anionic Polymerization of Acrylamide under Microwave Irradiation using Maghnite-Na+ Clay (Algerien MMT) as Initiator

Abstract

Intercalation of acrylamide into interlayer spaces of natural montmorillonite called maghnite (Algerian MMT) by the free solvent polymerization technique under micowave irradiation was studied. The transformation was carried out with using both the raw (Maghnite-Na fin) and treated clay (Maghnite-Na+ fin) in aqueous sodium hydroxide NaOH solution (1 M). It was shown that no initial modification of the layered mineral (by ion-exchange with Na+ cations or organophilization) is needed for the successful introduction of anionic hydrogels into the interlayer gallery. The goal of the present study was to synthesis anionic polyacrylamide/Maghnite composite with similar composition and structure to that synthesized of other catalyst. The Maghnite catalyst has a significant role in the industrial scale. In fact, the use of Maghnite is preferred for its many advantages: a very low purchase price compared to other catalysts, the easy removal of the reaction mixture. The anionic sodium-clay polyacrylamide material exhibited a tendency to the formation of exfoliated structure. The synthesized hydrogels, as monitored by the swelling behavior, were characterized by Fourier transform infrared and 1HNMR analysis.

Keywords

• green catalysis
• anionic polyacrylamide
• hydrogel
• maghnite-h+
• microwave irradiation