Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/7348| Título: | Physicochemical characterization of the PEG8000-Na2SO4 aqueous two-phase system |
| Autor(es): | Rodríguez, Oscar Silvério, Sara C. Madeira, Pedro Teixeira, J. A. Macedo, Eugénia |
| Data: | Nov-2007 |
| Editora: | American Chemical Society |
| Revista: | Industrial Engineering and Chemistry Research |
| Citação: | "Industrial Engineering and Chemistry Research". ISSN 0888-5885. 46:24 (Nov. 2007) 8199-8204. |
| Resumo(s): | The polyethylene glycol-sodium sulfate aqueous two-phase system has been characterized at 23 °C. Tielines for the phase diagram were obtained experimentally. Phases in equilibrium were characterized by means of the solvatochromic parameters π*, α, and β, which provide a measurement of the polarity/polarizability and the H-bond donor and acceptor abilities, respectively. The ability of the phases to participate in hydrophobic interactions was characterized by means of the free energy of transfer of a methylene group between the conjugated phases, using the partition of a homologous series of dinitrophenylated amino acids. The results show the effect of the presence of polymer and salt in the aqueous phase, and a comparison of both phases with pure water is made. |
| Tipo: | Artigo |
| URI: | https://hdl.handle.net/1822/7348 |
| DOI: | 10.1021/ie070473f |
| ISSN: | 0888-5885 |
| Arbitragem científica: | yes |
| Acesso: | Acesso aberto |
| Aparece nas coleções: |
Ficheiros deste registo:
| Ficheiro | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| Rodriguez_IECR.pdf | 109,44 kB | Adobe PDF | Ver/Abrir |
