Accession Number : AD0718363

Title :   Studies on the Stress Relaxation of Polystyrenes in the Rubbery-Flow Region. II.

Descriptive Note : Technical rept.,

Corporate Author : PRINCETON UNIV N J FRICK CHEMICAL LAB

Personal Author(s) : Knoff,W. ; Hopkins,I. L. ; Tobolsky,A. V.

Report Date : JAN 1971

Pagination or Media Count : 21

Abstract : An empirical equation for stress relaxation in the rubbery-flow region was applied to broad- and narrow-distribution polystyrenes. It is shown that over the range of polydispersity and molecular weights tested, the shear viscosity eta state near compliance J(e), and the rubbery-flow stress relaxation may be predicted if M(n) and M(w) are known. (Author)

Descriptors :   (*STYRENE PLASTICS, STRESSES), RELAXATION TIME, MATHEMATICAL ANALYSIS, SHEAR STRESSES, MOLECULAR WEIGHT

Subject Categories : Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE