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Schallausky, F. ; Erber, M. ; Komber, H. ; Lederer, A.
An easy strategy for the synthesis of well-defined aliphatic-aromatic hyperbranched polyester

A one-pot solution polymerization under mild conditions was adapted for the synthesis of well-defined aliphatic-aromatic polyesters with different degrees of branching. The esterification was performed at room temperature using 4,4-bis(4-hydroxyphenyl)valeric acid (AB2) and 3-(4-hydroxyphenyl)propionic acid (AB) as monomers. DPTS was used as a catalyst and DCC as a coupling agent. Polyesters with statistical, dendritic topology, controlled degree of branching and > 35 000 g · mol-1 were obtained. The polymers were characterized by 1H and 13C NMR, SEC, DSC, and TGA. A strong dependence of the degree of branching and the thermal properties of the polymers depending on the AB/AB2 monomer ratio was observed.

Quelle
Macromolecular Chemistry and Physics 209, 2331-2338

DOI
http://dx.doi.org/10.1002/macp.200800346

Erschienen am
December 2008
 
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