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Amorphous phase-segregated copoly(ether)esterurethane thermoset networks with oligo(propylene glycol) and oligo[(rac-lactide)-co-glycolide] segments: synthesis and characterization

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Abstract

Completely amorphous copoly(ether)ester networks based on oligo(propylene glycol) and oligo[(rac-dilactide)-co-glycolide] segments were synthesized by crosslinking star-shaped hydroxyl-telechelic cooligomers using an aliphatic low-molecular weight diisocyanate. Two different network architectures were applied exhibiting differences in the phase-separation behavior. For networks from oligo(propylene glycol)-block-oligo[(rac-lactide)-co-glycolide] triols (G3OPG-bl-OLG) only one glass transition was obtained. However, networks from a mixture of oligo(propylene glycol) triols (G3OPG) and oligo[(rac-lactide)-co-glycolide] tetrols (P4OLG) with a ratio of components in a certain range show two glass transition temperatures (T g) being attributed to two segregated amorphous phases. In this way a wide spectrum of mechanical properties can be realized and adjusted to the requirements of a specific application.

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Authors and Affiliations

  1. Centre of Biomaterial Development, Institute of Polymer Research, GKSS Research Center, Kantstr. 55, 14513, Teltow, Germany

    Jörg Zotzmann, Marc Behl & Andreas Lendlein

  2. BASF Aktiengesellschaft, GKT/F-B001, 67056, Ludwigshafen, Germany

    Armin Alteheld

Authors
  1. Jörg Zotzmann
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  2. Armin Alteheld
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  3. Marc Behl
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  4. Andreas Lendlein
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Correspondence to Andreas Lendlein.

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Zotzmann, J., Alteheld, A., Behl, M. et al. Amorphous phase-segregated copoly(ether)esterurethane thermoset networks with oligo(propylene glycol) and oligo[(rac-lactide)-co-glycolide] segments: synthesis and characterization. J Mater Sci: Mater Med 20, 1815–1824 (2009). https://doi.org/10.1007/s10856-009-3761-x

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