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Partial miscibility of poly(butylene terephthalate)/BPA polycarbonate melt blends

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Summary

Differential scanning calorimetry (DSC) measurements have been carried out on a number of poly(butylene terephthalate) (PBT)/BPA polycarbonate (PC) blends prepared by melt compounding and solution casting from hexafluoroisopropanol (HFIP). The results clearly indicate that appreciable mixing of the two polymers takes place in the melt phase whereas complete separation is observed in cast films. The failure of the casting procedure to mimic the melt blending results is related in part to liquid-liquid phase separation and to crystallization of both polymers from the casting solvent.

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Authors and Affiliations

  1. Corporate Research and Development Center, General Electric Company, 12301, Schenectady, NY, USA

    S. Y. Hobbs, V. L. Groshans, M. E. J. Dekkers & A. R. Shultz

Authors
  1. S. Y. Hobbs
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  2. V. L. Groshans
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  3. M. E. J. Dekkers
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  4. A. R. Shultz
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Hobbs, S.Y., Groshans, V.L., Dekkers, M.E.J. et al. Partial miscibility of poly(butylene terephthalate)/BPA polycarbonate melt blends. Polymer Bulletin 17, 335–339 (1987). https://doi.org/10.1007/BF00955717

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  • DOI: https://doi.org/10.1007/BF00955717

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