Improved Structural Polymer Alloys and Composites.
Abstract
Substantial progress was made in both experimental and theoretical elements. First, we devised procedures to synthesize (a) sulfonated polysulfone with a controlled and reproducible structure, (b) sulfonated polyaryletheretherketone with <30% sulfonation that has potential as a new high-temperature ionomer,, and (c) polyaryletherketone-co-ethersulfone made by a novel ether interchange. Blending studies centered on copolyester LCP's and polybenzimadazole/polyimide combinations. The latter are rendered compatible through specific interaction but which can be phased separated. This finding could result in greatly enhanced opportunities for the use of PBI resins. The major objectives with the LCP blends was to define criteria for miscibility and to improve their processability. Theoretical research was conducted on both LCP/LCP and random coil blends. Particularly important was work on the effect of sequence distribution on phase behavior in random coil blends. A model, containing an ordering parameter, successfully explained the special case of a random/alternating copolymer of the same composition to data.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 24, 1985
- Accession Number
- ADA166150
Entities
People
- Frank E Karasz
Organizations
- University of Massachusetts Amherst