The copolymerization of L-lactide andε-caprolactone using magnesium octoate as a catalyst

Copolymerizations of L-lactidc （L-LA） andε-caprolactone （ε-CL） were conducted in bulk using magnesium octoatc as a catalyst. The reactivity ratios of L-LA andε-CL were determined to be r;=23 and r;=0.22,respectively.The sequence analyses of the copolymers were performed on;C NMR.An increase in the reaction temperature enhances the role of transesterification and the extent of randomness.