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In-situ Copolymerization of Cyclic Poly(butylene terephthalate) Oligomers and e-Caprolactone
Macromolecules (2004)
  • William MacKnight, University of Massachusetts Amherst
Copolyesters were synthesized by using ring-opening polymerization of cyclic poly(butylene terephthalate) oligomers (c-PBT) and E-caprolactone monomer (CL) in the presence ofstannoxane catalyst at an elevated temperature. The in-situ copolymerization was conducted with various c-PBT/CL feed ratios. The copolyesters were characterized by GPC, NMR, and FT-IR techniques. Phase separation and the relaxation behavior of the resultant copolyesters were investigated by DSC, DMTA, and dielectric spectroscopy measurements. Mechanical properties (stress-strain behavior) are also reported and can be adjusted by varying the E-caprolactone content of the copolymer. 
  • In-Situ Copolymerization,
  • Cyclic Poly(butylene terephthalate),
  • Oligomers,
  • e-Caprolactone
Publication Date
Citation Information
William MacKnight. "In-situ Copolymerization of Cyclic Poly(butylene terephthalate) Oligomers and e-Caprolactone" Macromolecules Iss. 37 (2004) p. 6793 - 6800
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