Accession Number:

ADA023822

Title:

Structure-Property Relationships in Bibenzoxazole Polymers Containing Fluorocarbon Linkages.

Descriptive Note:

Technical rept. Jul 75-Apr 76

Corporate Author:

PRINCETON UNIV N J DEPT OF CHEMICAL ENGINEERING

Personal Author(s):

Report Date:

1976-05-01

Pagination or Media Count:

19.0

Abstract:

A series of bibenzoxazole polymers has presented a unique opportunity to determine relationships between physical transitions and molecular structure. The results of oscillatory thermomechanical experiments show two glassy-state and a glass transition as amorphous transitions for each material above -180C. Each glassy-state transition is correlated with onset of motion of specific linkages, the flexibilities of which depend on the structure and molecular position of the linkages. The glass transition temperatures depend on the two relaxations T Tg in a systematic manner.

Subject Categories:

  • Polymer Chemistry
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE