Abstract

Moulkheir Ayat, Naima Bensaada*, Mohammed Belbachir, Amine Harrane, Rachid Meghabar

DOI : http://dx.doi.org/10.13005/ojc/310432

The cationic polymerization of α-methylstyrene (AMS) is examined at 0°C in bulk and in solution in heterogenous phase using Maghnite-Na as a new solid ecological and efficient catalyst. Maghnite-Na is Algerian Montmorillonite sheet silicate clay, exchanged with sodium. Poly (α-methylstyrene)   (PAMS) have been successfully prepared and characterized by differents techniques, such as, ¹H NMR, ¹³C NMR, IR and DSC. The structural characteristics and thermal properties of the resulting polymers are elucidated. The influences of reaction temperature, initiator/monomer weight ratio and reaction time on the yields and the molecular weights are investigated. A mechanism for the reaction was proposed.

Solid catalysts; Montmorillonite; α-methylstyrene; Poly(α-methylstyrene);; Cationic polymerization; Mechanism

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