Ring opening polymerization copolyesters

Barbaud C, Fay F, Abdillah F, Randriamahefa S, Guerin P (2004) Synthesis of new homopolyester and copolyesters by anionic ring-opening polymerization of a, a , P-trisubstituted P-lactones. Macromol Chem Phys 205 199-207... 

This section describes a means to enhance the crystallization kinetics of absorbable polymers via polymer chemistry. It will show how this can be achieved by using an appropriate combination of mono- and difunctional alcohol initiators for ring-opening polymerization (ROP). Diols have been used commercially in ring-opening "prepolymerizations" to produce a,p-dihydroxy macroinitiators that are then used in a subsequent copolymerization to produce materials with special sequence distributions. This sequential addition ROP, in which a monomer feed portion is added in a subsequent step, is one method to make block copolyesters. An example is a glycolide/e-caprolactone copolymer that has enjoyed considerable commercial success. ... 

Oledzka, E. Synthesis of genistein-containing star-shaped homo- and copolyesters by the ring-opening polymerization. Polvm. Bull. 2013, 70,2587-2597. 

Lendlein A, Neuenschwander P, Suter U W, Hydroxy-telechelic copolyesters with well defined sequence structure through ring-opening polymerization , Macromol. Chem. Phys., 2000, 201, 1067-76. 

For example Kumar, A., and Gross, R. A., 2000, Candida antarctica Lipase B-Catalyzed Transesterification New Synthetic Routes to Copolyesters. J. Am. Chem. Soc. 122 11767-11770 Kumar, A., and Gross, R. A., 2000, Candida antartica lipase B catalyzed polycaprolactone synthesis effects of organic media and temperature. Biomacromolecules 1 133-138 Kobayashi, S, Uyama, H., Namekawa, S., and Hayakawa, H., 1998, Enzymic Ring-Opening Polymerization and Copolymerization of 8-Octanolide by Lipase Catalyst. Macromolecules 31 5655. 

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