Poly(butylene terephthalate)/glycerol-based vitrimers via solid-state polymerization

Y. Zhou, J.P.G. Goossens (Corresponding author), R.P. Sijbesma, J.P.A. Heuts (Corresponding author)

Research output: Contribution to journalArticleAcademicpeer-review

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A new type of semicrystalline vitrimer was prepared via the incorporation of glycerol into the amorphous phase of poly(butylene terephthalate) (PBT) by solid-state (co)polymerization (SSP). A near quantitative incorporation of the glycerol was confirmed by NMR spectroscopy. Wide- angle X-ray diffraction, differential scanning calorimetry (DSC), and temperature-modulated DSC showed that the PBT/glycerol-based vitrimers maintain the crystallization characteristics of normal PBT. By a change in the cross-link density of the PBT/glycerol-based vitrimers, a wide range of thermal, rheological and mechanical properties were obtained; e.g., the rubbery plateau modulus at 270 °C could be tuned from 0.07 to 3 MPa. The characteristic vitrimer behavior was demonstrated by stress relaxation and oscillatory frequency sweep experiments. In addition, these semicrystalline vitrimers can be recycled multiple times by compression molding without a substantial loss in dynamic mechanical and thermal properties.
Original languageEnglish
Pages (from-to)6742-6751
Number of pages10
Issue number17
Publication statusPublished - 12 Sept 2017


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