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The morphology and deformation behavior of poly(butylene terephthalate)/BPA polycarbonate blends

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Summary

In this communication the results of a series of recent studies of the morphology and deformation behavior of toughened poly(butylene terephthalate) (PBT)/BPA polycarbonate (PC) blends are briefly summarized. Several papers containing a more detailed account are currently in press (1–3). Among the unique morphological features of these blends are the consistent isolation of the core/shell impact modifier (IM) in the PC phase and the crystallization and phase separation of the PBT from the partially miscible PBT/PC melt on slow cooling. DSC studies provide corroborating evidence for melt miscibility of the two resins. The blends deform through a combination of cavitation and shear processes. In all cases cavitation occurs exclusively within the IM particles and is suppressed at higher PC concentrations and elevated temperatures.

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Authors and Affiliations

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

    S. Y. Hobbs, M. E. J. Dekkers & V. H. Watkins

Authors
  1. S. Y. Hobbs
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  2. M. E. J. Dekkers
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  3. V. H. Watkins
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Hobbs, S.Y., Dekkers, M.E.J. & Watkins, V.H. The morphology and deformation behavior of poly(butylene terephthalate)/BPA polycarbonate blends. Polymer Bulletin 17, 341–345 (1987). https://doi.org/10.1007/BF00955718

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  • DOI: https://doi.org/10.1007/BF00955718

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