Accession Number : ADA300333

Title :   Polymerization of Poly(p-Phenylene Sulfide) from Cyclic Precursor.

Descriptive Note : Final rept.,

Corporate Author : CASE WESTERN RESERVE UNIV CLEVELAND OH DEPT OF MACROMOLECULAR SCIENCE

Personal Author(s) : Ishida, Hatsuo ; Koenig, Jack L.

PDF Url : ADA300333

Report Date : 18 OCT 1995

Pagination or Media Count : 5

Abstract : The objective of this project is to understand the effect of carbon fibers and other high performance reinforcing fibers on the structure of high performance resins such as poly(phenylene sulfide) and epoxies. Of particular interest is the molecular structure/property relationships. Our approach for this project utilized molecular vibrational technique for the understanding of the structure of polymers. Significant scientific conclusions are that we have investigated detailed structural aspects of a cyclic poly(phenylene sulfide) for its crystal structure and polymerization characteristics. As the interest in cyclic compounds as precursors for polymers became strong in recent several years, the conclusion obtained in this study will help evaluate feasibility of using cyclic poly(phenylene sulfide) as potential raw materials for advanced composite materials. We have also studied the state of cure of epoxy resin around an organic fiber using infrared microscopy. With a site specific information on curing, we were able to map the state of cure around a single reinforcing filament, thus enabling the study of the fiber surface on the curing reaction of the matric resin.

Descriptors :   *PRECURSORS, *POLYMERIZATION, *CARBON FIBERS, *CYCLIC COMPOUNDS, CRYSTAL STRUCTURE, HIGH RATE, MOLECULAR VIBRATION, PERFORMANCE(ENGINEERING), POLYMERS, COMPOSITE MATERIALS, SITES, CYCLES, MICROSCOPY, SURFACES, MOLECULAR STRUCTURE, FILAMENTS, CURING, EPOXY COMPOUNDS, INFRARED RADIATION, EPOXY RESINS, PHENYL RADICALS, SULFIDES, REINFORCING MATERIALS.

Subject Categories : Polymer Chemistry
      Organic Chemistry
      Laminates and Composite Materials
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE