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Small Angle X-Ray Scattering of Crystalline Polymer Blends

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Abstract

Binary blends of a semicrystalline polymer, poly(butylene terephthalate), PBT, with an amorphous polymer, polyarylate, PAr, were studied for a wide range of compositions. Small angle x-ray scattering, thermal and mechanical analyses were conducted to determine the location of the uncrystallizable PAr relative to the crystal lamellae of PBT, for blends crystallized by heating from the quenched state. Comparison of experimental and calculated long periods indicates that interlamellar PAr placement becomes less probable as the PAr composition increases. When PBT crystallizes in these blends, most PAr is rejected from the regions near the crystal surfaces when PAr fraction exceeds about 0.40.

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Acknowledgments

Research was supported by U. S. Army Contract DAAL03-91-G-0132. Research was carried out in part at the National Synchrotron Light Source, Brookhaven National Laboratory.

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Author notes

  1. Peter P. Huo

    Present address: Analytical Division, W. R. Grace Corp., Columbia, MD, USA

Authors and Affiliations

  1. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Room 13-5082, Cambridge, MA, 02139, USA

    Peter P. Huo & Peggy Cebe

  2. Biology Department, Brookhaven National Laboratory, Upton, NY, 11973, USA

    Malcolm Capel

Authors
  1. Peter P. Huo
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  2. Peggy Cebe
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  3. Malcolm Capel
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Huo, P.P., Cebe, P. & Capel, M. Small Angle X-Ray Scattering of Crystalline Polymer Blends. MRS Online Proceedings Library 321, 555–560 (1993). https://doi.org/10.1557/PROC-321-555

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