Artículo
Abstract:
The Kerr effect of the Xanthan (charged polyelectrolyte; 113 ppm)/DTAB (surfactant) mixture in aqueous solution was studied. The static Kerr constant (B) and mean relaxation times (τ) values as a function of surfactant concentration (CDTAB) were determined. The observed birefringence (Δn) is not a linear function of the electric applied field (E 2). For small E values Δn grows with E2 and at a certain field value the birefringence tends to saturate. The addition of small quantities of DTAB lowers B values with respect to the Kerr constant of Xanthan (113 ppm) aqueous solution. The relaxation time of the mixtures is linearly dependent on the applied field and it decreases when DTAB concentration increases. The importance of the equivalent point is signalled. It is supposed that the initial rigidity of the polyelcctrolitc decreases because of the surfactant addition. Conductivity (σ) values as a function of surfactant concentration are presented.
Registro:
| Documento: | Artículo |
| Título: | Kerr effect of Xanthan/DTAB aqueous solutions |
| Autor: | Ritacco, H.; Acosta, E.; Kurlat, D.H.; Bisceglia, M. |
| Filiación: | Laboratorio de Sistemas Líquidos, Departamento de Física, UBA, Paseo Colon 850, 1063, Buenos Aires, Argentina Laboratorio de Electrooptica, Departamento de Física, UBA, Paseo Colon 850, 1063, Buenos Aires, Argentina |
| Palabras clave: | Kerr effect; Polymer surfactant systems; Mixtures; Paraffins; Rigidity; Solutions; Surface active agents; Polymer surfactant effects; Xanthan; Optical Kerr effect; surfactant |
| Año: | 2003 |
| Volumen: | 41 |
| Número: | 1 |
| Página de inicio: | 15 |
| Página de fin: | 24 |
| DOI: | http://dx.doi.org/10.1080/0031910021000018590 |
| Título revista: | Physics and Chemistry of Liquids |
| Título revista abreviado: | Phys. Chem. Liq. |
| ISSN: | 00319104 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319104_v41_n1_p15_Ritacco |
Referencias:
- Kwak, J.C.T., (1998) Polymer Surfactant Systems, , Marcel Dekker Inc, New York-Basel-Hong Kong
- Jönson, B., Lindman, B., Holmberg, K., Kronberg, B., (2001) Surfactants and Polymers in Aqueous Solution, , John Wiley and Sons- Chichester- New York-Weinheim "Brisbane- Singapore-Toronto
- Ritacco, H., Albouy, P.A., Bhattacharyya, A., Langevin, D., (2000) Phys, Cem., Chem. Phys., 2, p. 5243
- Romano, S.D., Acosta, E.O., Kurlat, D.H., Bisceglia, M., (2000) Phys. Chem. Liq., 38, p. 663
- Fredericq, E., Houssier, C., (1973) Electric Dichroism and Electric Birefringence, , Oxford University Press
- Wijmenga, S.S., Mandel, M., (1988) J. Chem. Soc. Faraday Trans, 84 (7), p. 2483
- Yamakawa, H., (1971) Modern Theory of Polymer Solutions, , Harper and Row, New York
- Nagai, K., Ishikawa, T., (1965) J. Chem. Phys., 43, p. 4508
- Flory, P.J., (1974) Macromolemles, 7, p. 381
- Riande, E., Saiz, E., (1992) Dipole Moments and Birefringence of Polymers, , Prentice Hall, New Jersey, USA
Citas:
---------- APA ----------
Ritacco, H., Acosta, E., Kurlat, D.H. & Bisceglia, M. (2003) . Kerr effect of Xanthan/DTAB aqueous solutions. Physics and Chemistry of Liquids, 41(1), 15-24.http://dx.doi.org/10.1080/0031910021000018590
---------- CHICAGO ----------
Ritacco, H., Acosta, E., Kurlat, D.H., Bisceglia, M. "Kerr effect of Xanthan/DTAB aqueous solutions" . Physics and Chemistry of Liquids 41, no. 1 (2003) : 15-24.http://dx.doi.org/10.1080/0031910021000018590
---------- MLA ----------
Ritacco, H., Acosta, E., Kurlat, D.H., Bisceglia, M. "Kerr effect of Xanthan/DTAB aqueous solutions" . Physics and Chemistry of Liquids, vol. 41, no. 1, 2003, pp. 15-24.http://dx.doi.org/10.1080/0031910021000018590
---------- VANCOUVER ----------
Ritacco, H., Acosta, E., Kurlat, D.H., Bisceglia, M. Kerr effect of Xanthan/DTAB aqueous solutions. Phys. Chem. Liq. 2003;41(1):15-24.http://dx.doi.org/10.1080/0031910021000018590
