A new strategy for synthesis of microspheres of amphiphilic block copolymer based on epichlorhydrin and n-vinyl-2-pyrrolidone induced by an ecologic catalyst clay layered called maghnite-H+ (Algerian MMT)
Bendaho Djelloul, Rahmouni Abdelkade, Ferrahi Mohammed Issam, Belbachir MohammedPhysical Sciences Research International
Published: October 15 2013
Volume 1, Issue 4
Pages 97-103
Abstract
Biodegradable copolymer microsphere of poly(epichloridrin-co-NVP) was synthesized by a ring-opening polymerization process of epichloridrin and n-vinyl-2-pyrrolidone. The copolymerization of epichloridrin (ECH) and n-vinyl-2-pyrrolidone (NVP) catalyzed by maghnite-H+ (mag-H+) was investigated. The effect of some factors such as the amount of the catalyst (maghnite-H+), the temperature of reaction and the solvent were discussed. It was found that the copolymerization rate increased with increase in the temperature and the proportion of catalyst, and it was larger in nonpolar solvents. The product was characterized by various technique characterization such as FTIR and 1H-NMR.
Keywords: Epichloridrin, n-vinyl-2-pyrrolidone, amphiphilic block, maghnite-H+, microspheres, H-NMR spectroscopy, ring opening polymerization.
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