## Abstract The theory of solventโinduced shifts of the absorption and fluorescence band spectra of a solute is well known and has been tested for a multitude of systems. However, there are only few applications to polymers. By a direct comparison of the spectral shifts in liquid solvents with thos
The effect of stirring on the diffusion of small molecules from a polymer matrix into a solution
โ Scribed by E. Kondili; M. Kontominas; M. Kosmas
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 462 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0032-3861
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๐ SIMILAR VOLUMES
A method is described for determining the diffusion coefficients of small solutes in limited volumes (approximately equal to 4-9 ml) of fluid. Diffusion is measured in a three-chamber diffusion cell across a central unstirred compartment. Compartments are separated by nitrocellulose membranes. The i
## Abstract The effect of surfactants on the rate of diffusionโcontrolled cementation of copper from dilute copper sulphate solutions on a stationary zinc disc in a stirred vessel was studied. Variables investigated were rotational speed of the impeller, concentration and type of surfactants and co