Highly branched radial block copolymers via dendritic initiation of aliphatic polyesters
1998; Wiley; Volume: 36; Issue: 15 Linguagem: Inglês
10.1002/(sici)1099-0518(19981115)36
ISSN1099-0518
AutoresMikael Trolls�s, Craig J. Hawker, Jules F. Remenar, James L. Hedrick, Mats Johansson, Henrik Ihre, Anders Hult,
Tópico(s)Advanced Polymer Synthesis and Characterization
ResumoLiving ring opening polymerization of ε-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 ε-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. © 1998 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 36: 2793–2798, 1998
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