Blends of Different Linear Polyamides with Hyperbranched Aromatic AB(2) and A(2)+B-3 Polyesters

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung


  • Zhirong Fan - , Leibniz Institute of Polymer Research Dresden (Autor:in)
  • Klaus Jaehnichen - , Leibniz Institute of Polymer Research Dresden (Autor:in)
  • Philippe Desbois - , BASF (Autor:in)
  • Liane Haeussler - , Leibniz Institute of Polymer Research Dresden (Autor:in)
  • Roland Vogel - , Leibniz Institute of Polymer Research Dresden (Autor:in)
  • Brigitte Voit - , Leibniz Institute of Polymer Research Dresden (Autor:in)


To explore the possible applications of hyperbranched polymers for modifying linear polyamides, two hyperbranched aromatic polyesters characterized as high T-g polymers possessing phenolic end groups were used in melt mixing with partly aromatic polyamide and commercially available aliphatic polyamide-6, respectively. Different amounts of both hyperbranched polyesters (from 1 wt % up to 20 wt %) were added to the polyamides, and the influence of these hyperbranched polyesters on the properties of the polyamides was investigated. The hyperbranched polyester based on an AB(2) approach was found to be the most effective modifier. A significant increase of the glass transition temperature of the final blend was detected. However, a remarkable reduction of crystallinity as well as complex melt viscosity of those blends was also observed. The use of an A(2)+B-3 hyperbrancbed polyester as melt modifier for the polyamides was less effective for changing the thermal properties, and the complex melt viscosity of the final material increased since heterogeneous blends were formed. In contrast to that, generally, the addition of the AB(2) hyperbranched polyester to the polyamides resulted in homogeneous blends with improved T-g and processability. (C) 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 3558-3572, 2009


Seiten (von - bis)3558-3572
FachzeitschriftJournal of Polymer Science, Part A: Polymer Chemistry
PublikationsstatusVeröffentlicht - 15 Juli 2009
Extern publiziertJa

Externe IDs

Scopus 67650698546
ORCID /0000-0002-4531-691X/work/148607781



  • Blend morphology, Blends, Glass transition temperature, Hyperbranched aromatic polyester, Linear polyamide, Rheology modifier