PET – A semi-crystalline nanocomposite
November 12-16, 2017
Polymer nanocomposites sparked significant interest due to unprecedented material properties and property combinations. While most polymer nanocomposites are multi-phase materials with distinctive chemical structure for each phase, it is possible to make a reinforcement with the same chemistry. Such composites have been demonstrated in metals and polymers. Reinforcement with the same base chemistry (self-reinforcing) has advantages in compatibility, load transfer, and processing ability. Composite research continues on interface properties and their optimization. This is often complicated by poor surface chemistry interactions. Polyethylene terephthalate (PET), a widely known semi-crystalline polymer, possess a unique micro-structure that can be engineered through process history. Bi-axial stretching near the glass transition temperature yields a semi-crystalline microstructure in PET controlled by a function of temperature and strain rate where, in many cases, the crystalline phase can be kept small and acts as a nano-scale reinforcement.
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Jay C. Hanan, Sudheer Bandla, and Masoud Allahkarami, "PET – A semi-crystalline nanocomposite" in "Composites at Lake Louise 2017", Eric Duoss, Lawrence Livermore National Laboratory, USA Waltraud M. Kriven, University of Illinois at Urbana-Champaign, USA Eds, ECI Symposium Series, (2017). http://dc.engconfintl.org/composites_all_2017/26