Accession Number:

ADA238643

Title:

Phase Transformations, Ultrastructure and Properties of Rigid-Rod Polymers

Descriptive Note:

Final rept. 1 Jun 89-30 Nov 90,

Corporate Author:

MASSACHUSETTS UNIV AMHERST DEPT OF POLYMER SCIENCE AND ENGINEERING

Personal Author(s):

Report Date:

1991-05-01

Pagination or Media Count:

10.0

Abstract:

The structure and properties of PBZT and PBO fibers and films depend critically in the detailed processing. Investigation of the coagulation process is of significant interest this is where the initial solid state polymer structure forms and the starting point from which all other post treatment microstructures evolve. Research under F49620-89-C-0073 has concerned an analysis of crystal solvates in a PBZTPPAwater system, a general geometrical classification scheme for grain boundaries in PBZO, the analysis of compressive strength of PBZTPEEK film laminates after sol-gel microcomposite processing, a morphological study of kink bands in PBZT and PBZO fibers to determine the cause of the relative weakness of the fibers in compression, and a microstructural examination of PBZO fibers as a function of heat treatment processing.

Subject Categories:

  • Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE