Highly branched radial block copolymers via dendritic initiation of aliphatic polyesters
✍ Scribed by Mikael Trollsås; Craig J. Hawker; Jules F. Remenar; James L. Hedrick; Mats Johansson; Henrik Ihre; Anders Hult
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 177 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0887-624X
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✦ Synopsis
Living ring opening polymerization of -caprolactone initiated from the numerous chain-end hydroxymethyl groups of the analogous dendrimeric and hyperbranched polyesters derived from 2,2-bis(hydroxymethyl) propionic acid is described. By controlling the size of the dendritic macromolecule and the molar ratio of -caprolactone, a variety of highly branched radial block copolymers are obtained. Comparison of the results obtained for the dendrimeric and hyperbranched initiators demonstrates that the reactivity of the chain-end hydroxymethyl groups in the dendrimer are significantly greater than in the isomeric hyperbranched case.