Journal of Polymer Science Part A: Polymer Chemistry, Vol.47, No.8, 2156-2162, 2009
Solid Acid Clay Mediated Copolymerization of Methyl Acrylate and 1-Octene: 2D NMR Substantiation of Predominant Alternating Comonomer Sequence
Montmorillionite K10 powder presence during radically initiated copolymerization of methyl acrylate (M) and I-octene (0) gave copolymers with higher incorporation of alkene unit. Highly viscous and transparent copolymers showed alternation irrespective of the copolymer composition. Increasing the amount of K10 powder increased the total percentage conversion, as well as 1-octene incorporation. The monomodal curves obtained in gel permeation chromatography (GPC) substantiated that true copolymers were formed. The alternation in the copolymers was authenticated through Heteronuclear Multiple Quantum Correlation (HMQC) experiments in conjugation with Total Correlated Spectroscopy (TOCSY). (C) 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 2156-2162, 2009
Keywords:clay;copolymerization;functionalization of polymers;gel permeation chromatography (GPC);Lewis acid-mediated polymerization;NMR