Accession Number:

AD0679903

Title:

A RELATION BETWEEN THE RELAXATION MECHANISM AND THE DISTRIBUTION OF RELAXATION TIMES.

Descriptive Note:

Technical rept.,

Corporate Author:

MCGILL UNIV MONTREAL (QUEBEC) DEPT OF CHEMISTRY

Personal Author(s):

• Eisenberg,A.
• Teter,L. A.

Report Date:

1968-08-25

Pagination or Media Count:

12.0

Abstract:

It was found that materials which relax by bond interchange in the glass transition region exhibit a much narrower distribution of relaxation times than those which relax by molecular flow. The half-width of the distribution is defined. Materials which relax by bond interchange have half-width values below ca 0.8, whereas those relaxing by molecular flow have values above ca 1.0. The correlation represents a useful diagnostic tool for the simple identification of the relaxation mechanism in polymers. Author

Descriptors:

• (*POLYMERS
• RELAXATION TIME)
• DYNAMICS
• VISCOELASTICITY
• STRESSES
• DYNAMICS
• GLASS
• PHOSPHATE GLASS
• CHEMICAL BONDS
• PHOSPHATES
• SULFUR

Subject Categories:

• Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE