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 : 25 AUG 1968

Pagination or Media Count : 12

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