Abstract
This work describes a synthesis of linear diblock and triblock copolymers of 2-vinyl pyridine (2VP) and ethylene oxide (EO). The overall synthetic approach involved polymerization of 2VP, followed by polymerization with EO. Neutralization of the reactive end-groups of the living diblock P2VP- b-PEO (−)K (+) produced the diblock copolymer P2VP- b-PEO. Reaction with dibromoxylene in the presence of CsI led to the triblock copolymer, P2VP- b-PEO- b-P2VP. The triblock copolymers were separated by fractionation at 40 °C. Copolymers were characterized by size exclusion chromatography, light scattering and nuclear magnetic resonance spectroscopy. Characterization showed that the materials have high molecular and compositional homogeneity.
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