Development of Highly Oriented Polymers with Improved Mechanical Properties
Abstract
The basic need for stronger polymeric films is discussed in the context of new theoretical and experimental evidence. It is shown that extended-chain crystals of polymers, that is, polymer chains which do not fold back on themselves should have high strength and stiffness. However, it is necessary to use these materials in the form of films that have all of the chains oriented in one direction. It is shown that such laminates should and do have enhanced mechanical properties. Experiments to produce such oriented films with polyethylene crystallized in a shear field are reported. A stirred, high- pressure crystallizer was designed and assembled, although no data have yet been obtained. Screening tests to evaluate a variety of materials were conducted with several polymers. Poly(n-alkyl isocyanates) were cast as ultra-thin films and show promise as a high regular extended-chain crystal. Preliminary x-ray diffraction studies of these materials were performed.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1974
- Accession Number
- ADA008195
Entities
People
- Donald Mcintyre
- Eberhard A. Meinecke
Organizations
- University of Akron