Ultrastructure Processing of Macromolecular Materials.
Abstract
This research has as one of its principal aims the development of electroactive polymers with ultrastructural domains. This research program also incorporates investigations in polymer blends, epoxy plasticization, characterization of rigid rod polymers and other areas. The ultrastructure portion consists of a coordinated research effort with profs. R. Lenz and H. Winter into the synthesis of electrically conducting block copolymers, the structuring of such materials by novel techniques, and the characterization of the polymers produced. Recent advances in this area are described as follows. In the studies of polymer blends various lines of research have been pursued that have recently proved most revealing. These include problems of compatibility in polymer-copolymer systems, the effects of crystallization, and of pressure. The studies of plasticzation with water and other diluents in network and in semi-crystalline polymers has continued to use new techniques such as deuterium quadrupole NMR and neutron scattering. Various theoretical studies in the area of fluids were also extended. Quasi-elastic light scattering was used further to characterize asymetric solutes and suspensoids. High pressure studies of polymer liquid crystals were initiated to elucidate the thermodynamics of such systems. The cooperative ultrastructure research has capitalized on recent synthetic and processing advances. IN this effort Prof. Lenz has extended his synthetic efforts in the area of polyphenylene vinylene and related block copolymers while polyvinyl pyridine was studied further. Prof. Winter investigated structures produced in shear and extensional flow fields.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1983
- Accession Number
- ADA147310
Entities
People
- F. E. Karasz
Organizations
- University of Massachusetts Amherst