FUNDAMENTAL STUDIES ON STRUCTURE AND PROPERTY EVOLUTION#DURING UNI AND BIAXIAL STRETCHING OF SINGLE AND
Abstract
In this proposed research, the Cakmak group will focus on the next generation of single and multi-layer polymer films that exhibit high glass transition temperature. These are: Single layer high Tg polymer films PEEK, PEEK/PEI blends (PolyK Technologies), multilayer PET/fluorinated polymer microlayer films (Polymer Plus). Following production of films, Cakmak will utilize highly instrumented real time true stress-strain-birefringence uni and biaxial measurement and heat setting systems developed by the PI at his laboratories to assess uniaxial, simultaneous and sequential biaxial stretching strategies combined with real time true stress, true strain and birefringence that provide direct information on molecular mechanisms including orientation, crystallization and relaxation processes and strain hardening behavior. These mechanisms are most critical to establish the processing window (Temperature, Rate, Mode of stretching, extent of stretching) to obtain desired morphology (orientation and crystallinity levels and texture) coupled with thickness uniformity and surface roughness controlled by the details of the thermal-deformation history imparted during stretching and constrained annealing to maximize dielectric properties for capacitor films.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 21, 2018
- Source ID
- N000141612762
Entities
People
- Mukerrem Cakmak
Organizations
- Office of Naval Research
- United States Navy
- University of Akron