Abstract
The predictions of the bead-spring model are compared with the infinite dilution dynamic properties of polystyrene in Aroclor 1248, as a function of molecular weight. The experimentally determined quantities include the longest relaxation time and the relaxation-time spectrum, obtained via oscillatory flow birefringence; the diffusion coefficient, measured by NMR and forced Rayleigh scattering; the radius of gyration, determined by small-angle neutron scattering; and the intrinsic viscosity. In all cases, the data are very well described by the model, using a consistent set of three parameters. However, the conformational dynamics experiments suggest a surprisingly sharp end to the relaxation spectrum, corresponding to the relaxation time for an approximately 50-monomer subchain.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 551-555 |
| Number of pages | 5 |
| Journal | Journal of Non-Crystalline Solids |
| Volume | 131-133 |
| Issue number | PART 2 |
| DOIs | |
| State | Published - Jun 2 1991 |
Bibliographical note
Funding Information:This work was supported by the National Science Foundation (DMR-8319291 and DMR-8715391) and the University of Minnesota/NSF Center for Interfacial Engineering. The authors are also indebted to J.L. Schrag and his research group for many helpful discussions, and their willingness to make their results available.
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