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Article
In-situ Copolymerization of Cyclic Poly(butylene terephthalate) Oligomers and e-Caprolactone
Macromolecules
(2004)
Abstract
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.Â
Keywords
- In-Situ Copolymerization,
- Cyclic Poly(butylene terephthalate),
- Oligomers,
- e-Caprolactone
Disciplines
Publication Date
2004
Citation Information
William MacKnight. "In-situ Copolymerization of Cyclic Poly(butylene terephthalate) Oligomers and e-Caprolactone" Macromolecules Iss. 37 (2004) p. 6793 - 6800 Available at: http://works.bepress.com/william_macknight/237/