Viscoelastic Properties of Dilute Polymer Solutions.
Abstract
The storage and loss shear moduli of dilute solutions of a large number of polymers (carefully characterized samples, mostly with narrow molecular weight distribution) have been measured in a frequency range from 100 to 8000 Hz and the data have been extrapolated to infinite dilution for comparison with molecular theories. Linear flexible polymers include poly-alpha-methyl styrene, 1,4-polybutadiene, and polydimethyl siloxane; branched flexible polymers (stars, combs, and randomly branched) include polystyrene, 1,4-polybutadiene, and ethylene-propylene copolymers; rigid and semirigid polymers include tobacco moasic virus, poly-gamma-benzyl-L-glutamate, and poly-n-hexyl isocyanate. Different molecular weights were studied. Several branched polystyrenes were studied in high-viscosity solvents to obtain limiting high-frequency behavior. The results have been interpreted by molecular theories in terms of the structure, conformation, internal flexibility, and modes of Brownian motion of these molecules.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1974
- Accession Number
- ADA001600
Entities
People
- John D. Ferry
Organizations
- University of Wisconsin–Madison