Total and preferential sorption of poly(ethyl methacrylate) in the binary solvent mixture ethyl acetate/iso-propanol
✍ Scribed by M.D. Blanco; J.M. Teijón; I. Katime
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 330 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0014-3057
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✦ Synopsis
The behaviour of poly(ethyl methacrylate) in the system ethyl acetate (l)/iso-propanol (2) is studied; liquid 1 is a solvent for the polymer and liquid 2 is a precipitant. The techniques laser light scattering, differential refractometry and viscometry are used. Preferential adsorption of 2 over the whole composition range is observed as well as a remarkable influence of temperature on the inter-and intra-molecular interactions of the system. Various theoretical expressions for the preferential and total adsorption coefficients are used; their agreement or disagreement with the experimental results is explained on the basis of polymer-solvent interactions.