Accession Number:

AD0620887

Title:

POLYMER STRUCTURES AND PROPERTIES

Descriptive Note:

Rept. for 1 Feb 1960-30 Apr 1961

Corporate Author:

CARNEGIE-MELLON UNIV PITTSBURGH PA MELLON INST OF SCIENCE

Report Date:

1961-04-30

Pagination or Media Count:

112.0

Abstract:

Investigations relating to dilute solutions of polymers comprised a theoretical treatment of Rayleigh scattering to include both intramolecular and intermolecular optical interference effects the temperature dependence of the second virial coefficient for polystyrene in cyclohexane the intrinsic viscosity-molecular weight relation for poly-vinyl acetate in butanone and design and construction of a precision light scattering photometer. The melt viscosity-molecular weight relation at 218C for monodisperse polystyrene prepared anionically was found to be identical with that for ordinary fractions. Poly-vinyl acetate, prepared by an emulsion polymerization in the presence of a protein, yielded an insoluble component containing bound protein. Preliminary stress-strain measurements on cross-linked swollen polyethylene gave only equivocal evidence for specific solvent effects on the unperturbed randomflight dimensions of the polymer chains.

Subject Categories:

  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE