Deformation mechanisms in nylon 6/ABS blends

Authors

  • B. Majumdar,

    1. Department of Chemical Engineering and Center for Polymer Research University of Texas at Austin, Austin, Texas 78712
    Current affiliation:
    1. Department of Chemical Engineering and Material Science, University of Minnesota, 151 Amundson Hall, 421 Washington Avenue S. E., Minneapolis, MN 55455-0132
    Search for more papers by this author
  • H. Keskkula,

    1. Department of Chemical Engineering and Center for Polymer Research University of Texas at Austin, Austin, Texas 78712
    Search for more papers by this author
  • D. R. Paul

    Corresponding author
    1. Department of Chemical Engineering and Center for Polymer Research University of Texas at Austin, Austin, Texas 78712
    • Department of Chemical Engineering and Center for Polymer Research University of Texas at Austin, Austin, Texas 78712
    Search for more papers by this author

Abstract

The deformation mechanisms during fracture of a Nylon 6/ABS blend compatibilized with an imidized acrylic polymer were compared to those of an uncompatibilized blend. A postmortem examination of deformed zones in samples loaded to failure in a double-notch four-point-bend geometry was made using transmission electron microscopy (TEM). For the compatibilized blend, cavitation of the rubber particles followed by massive shear yielding of the polyamide matrix was concluded to be the sequence of events leading to toughness; while, for the brittle uncompatibilized blend, the evidence indicated that a lack of adhesion at the Nylon-ABS interface prevented the rubber particles from cavitating and the subsequent plastic deformation of the polyamide matrix. © 1994 John Wiley & Sons, Inc.

Ancillary