Accession Number : AD0687467

Title :   THE EFFECT OF MORPHOLOGY ON THE MECHANICAL AND RHEO-OPTICAL PROPERTIES OF A STYRENE-BUTADIENE-STYRENE BLOCK COPOLYMER,

Corporate Author : MASSACHUSETTS UNIV AMHERST DEPT OF CHEMISTRY

Personal Author(s) : Wilkes,Garth L. ; Stein,Richard S.

Report Date : APR 1969

Pagination or Media Count : 29

Abstract : The mechanical and rheo-optical properties of a styrene-butadiene-styrene block copolymer of a given chemical composition are dependent upon the morphology of the polymer as affected by the solvent system from which a polymer film is cast. Films cast from methyl ethyl ketone and from toluene are compared. Properties found to differ are the stress-strain curve, the birefringence-strain curve, stress relaxation, birefringence relaxation and the dynamic mechanical spectra. (Author)

Descriptors :   (*POLYMERS, MICROSTRUCTURE), (*STYRENE PLASTICS, COPOLYMERIZATION), (*BUTADIENES, COPOLYMERIZATION), RHEOLOGY, SOLVENTS, KETONES, STRESSES, BIREFRINGENCE, MECHANICAL PROPERTIES, PHASE STUDIES

Subject Categories : Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE