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: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Rodriguez_IECR.pdf | 109,44 kB | Adobe PDF | Ver/Abrir |