Nonlinear gradient-driven diffusion was studied in concentrated polystyrene (PS)/ethylbenzene (EB) solutions using vapor sorptions with a finite driving force. The nonlinear sorptions were carried out on thin films ( ร 2.05, 3.50 mm thick) at conditions where non-Fickian, ''viscoelastic'' effects app
Solvent effects on mutual diffusion in concentrated polystyrene solutions
โ Scribed by D. R. Paul
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- English
- Weight
- 389 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0021-8995
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๐ SIMILAR VOLUMES
## Abstract Diffusion coefficient measurements for solvents in concentrated polymer solutions require consideration of both concentration dependence of the diffusion coefficient and surface resistance to mass transport. Solutions to the diffusion equation have been generated where these effects are
Excimer formation of pyrenyl labels attached to polystyrene has been studied in concentrated solution and solvent-plasticized ยฎlm. The ratio of excimer to monomer intensities (I e / I m ) is found to vary tortuously with increasing concentration (C) and display a critical concentration point at C g