AB2 Functional Polyesters via Ring Opening Polymerization: Synthesis and Characterization


Velthoen, Ingrid W. and Dijkstra, Pieter J. and Feijen, Jan (2009) AB2 Functional Polyesters via Ring Opening Polymerization: Synthesis and Characterization. Macromolecular Chemistry and Physics, 210 (8). pp. 689-697. ISSN 1022-1352

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Abstract:Aliphatic AB2 functional polyesters were conveniently prepared by the ring opening polymerization of ε-caprolactone and L-lactide in the presence of the AB2 functional initiator 2,2-bis(hydroxymethyl)propionic acid (bis-MPA) and Sn(Oct)2 as the catalyst. In L-lactide polymerization, both bis-MPA hydroxyl groups initiated the polymerization reaction, but for ε-caprolactone polymerization this depended on the monomer to initiator to catalyst ratio. Initiation at two hydroxyl groups occurred at high monomer to initiator ([M]/[I]) ratio and at high Sn(Oct)2 to monomer ratio. The melting temperatures of the AB2-functional PLLA and PCL polymers were comparable to linear polymers with a DP equal to the DP per arm in the polymer.
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Copyright:© 2009 Wiley
Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/72710
Official URL:https://doi.org/10.1002/macp.200800596
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