Abstract
Synthesis and Characterization of Poly(α-Methylstyrene) by Cationic Polymerization Using a New Solid Ecological Catalyst
Moulkheir Ayat, Naima Bensaada*, Mohammed Belbachir, Amine Harrane, Rachid Meghabar
DOI : http://dx.doi.org/10.13005/ojc/310432
Abstract:
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.
Keywords:Solid catalysts; Montmorillonite; α-methylstyrene; Poly(α-methylstyrene);; Cationic polymerization; Mechanism
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