Accession Number : AD0672689

Title :   DEPENDENCE OF OPTICAL ANISOTROPY OF MACROMOLECULES ON THE PROPERTIES OF A SOLVENT (ZAVISIMOST OPTICHESKOI ANIZOTROPII MAKROMOLEKUL OT SVOISTV RASTVORITELYA),

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Frisman,E. V. ; Dadivanyan,A. K. ; Dyuzhev,G. A. ; Kamenev,Yu. G.

Report Date : 29 SEP 1967

Pagination or Media Count : 12

Abstract : The segmental anisotropy (alpha1 - alpha2) of polyvinyl butyrate (I), polyvinyl propionate (II), polyvinyl butyral (III), and polychloroprene (IV) was calculated on the basis of dynamic birefringence and viscosity determined at 21C on solutions of I--IV in solvents with a value of n approximately equal to that of the polymer. Both aromatic and nonaromatic solvents were used. The experimental results are explained by assuming that an anisotropy increment due to orientation of molecules of the solvent with respect to segments of the polymer chain is added to the true segmental anisotropy of the polymer.

Descriptors :   (*POLYMERS, OPTICAL PROPERTIES), CHLOROPRENES, VINYL PLASTICS, ACETAL RESINS, ORGANIC SOLVENTS, BIREFRINGENCE, VISCOSITY, MOLECULAR STRUCTURE, USSR

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE