Accession Number:

ADA059019

Title:

Structural Studies of Monomeric Model Compounds and Related Ordered Polymer Systems: The Crystal and Molecular Structures of 2,6-Diphenylbenzo (1,2-d:5,4-d')-Bisoxazole and 2,6-Diphenylbenzo (1,2-d:4,5-d') Bisthiazole.

Descriptive Note:

Final rept. 15 Apr 77-14 Apr 78,

Corporate Author:

DAYTON UNIV OH DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1978-06-14

Pagination or Media Count:

29.0

Abstract:

The Materials Laboratory at Wright-Patterson Air Force Base is presently investigating the applicability of ordered polymer systems as self-reinforced polymer composites. The preparation of high strength materials consisting of rod-like polymers, such as Kevlar, requires a high degree of orientation of the rods. Of the numerous rod-like polymer systems that have been studied to date, the paraconfigured aromatic heterocyclic class of polymers, such as the polybenzoxazoles PBO and the polybenzthiazoles PBT, are especially promising since precipitated films and fibers of these materials exhibit high tensile strengths and good thermal oxidative stabilities. These systems are also excellent alternatives to the more widely known aromatic polyamides, such as Kevlar and Nomex.

Subject Categories:

  • Plastics
  • Crystallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE