Crystallization of Poly(butylene terephthalate) and Its Blends with Polyarylate

James Patrick Runt, D. M. Miley, X. Zhang, K. P. Gallagher, K. McFeaters, J. Fishburn

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Abstract

In this paper we explore the crystallization kinetics of poly(butylene terephthalate) (PBT), polyethylene terephthalate) (PET), and miscible blends of PBT with a polyarylate based on Bisphenol A and a 75/25 mole ratio of isophthalic and terephthalic acids. For PBT, a regime II → III transition is indicated near 210 °C (ΔT ∼ 30 °C) and the fold surface free energy (σe) was found to be in the range of 57-75 erg/cm2. This leads to a work of chain folding (q) of ∼3-5 kcal/mol folds. Analysis of the crystallization data of van Antwerpen and van Krevelen for PET shows that crystallization occurs in regime II across a wide range of Tc· σe, was estimated to be ∼140 erg/cm2 and q∼10 kcal/mol from their data. These values are roughly twice that of PBT, consistent with the longer flexible segments in the PBT repeat unit. Crystallization data for three PBT/PAr blends was analyzed using a modified Lauritzen-Hoffman method and compared to that of pure PBT.

Original languageEnglish (US)
Pages (from-to)1929-1934
Number of pages6
JournalMacromolecules
Volume25
Issue number7
DOIs
StatePublished - Mar 1 1992

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Crystallization
Polyethylene Terephthalates
Polyethylene terephthalates
Crystallization kinetics
Free energy
Acids
terephthalic acid
butylene

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Runt, J. P., Miley, D. M., Zhang, X., Gallagher, K. P., McFeaters, K., & Fishburn, J. (1992). Crystallization of Poly(butylene terephthalate) and Its Blends with Polyarylate. Macromolecules, 25(7), 1929-1934. https://doi.org/10.1021/ma00033a015
Runt, James Patrick ; Miley, D. M. ; Zhang, X. ; Gallagher, K. P. ; McFeaters, K. ; Fishburn, J. / Crystallization of Poly(butylene terephthalate) and Its Blends with Polyarylate. In: Macromolecules. 1992 ; Vol. 25, No. 7. pp. 1929-1934.
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Runt, JP, Miley, DM, Zhang, X, Gallagher, KP, McFeaters, K & Fishburn, J 1992, 'Crystallization of Poly(butylene terephthalate) and Its Blends with Polyarylate', Macromolecules, vol. 25, no. 7, pp. 1929-1934. https://doi.org/10.1021/ma00033a015

Crystallization of Poly(butylene terephthalate) and Its Blends with Polyarylate. / Runt, James Patrick; Miley, D. M.; Zhang, X.; Gallagher, K. P.; McFeaters, K.; Fishburn, J.

In: Macromolecules, Vol. 25, No. 7, 01.03.1992, p. 1929-1934.

Research output: Contribution to journalArticle

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Runt JP, Miley DM, Zhang X, Gallagher KP, McFeaters K, Fishburn J. Crystallization of Poly(butylene terephthalate) and Its Blends with Polyarylate. Macromolecules. 1992 Mar 1;25(7):1929-1934. https://doi.org/10.1021/ma00033a015