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Abstract:

The elution behaviour of different polymer-solvent systems in three types of organic columns for SEC has been compared and interpreted. The experimental data show that the classical universal calibration is not accomplished. Deviations from a unique curve are observed due to the binary and ternary interactions between the components of the system (solvent, polymer and gel) which results on secondary mechanisms accompanying the main pure or "ideal" SEC separation mechanism. Both, enthalpic and entropic effects are interpreted in terms of the swelling and crosslinking degrees of the gel packings, and are also related with the fractal characteristics of their surfaces, such as the fractal dimension and the available pore size. Moreover, a relationship between the fractal dimension of the pore surface and the chromatographic distribution coefficient is proposed. © 2003 Elsevier Science B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Fractal calibration in size-exclusion chromatography: I. An introduction
Autor:García-Lopera, R.; Irurzun, I.; Abad, C.; Campos, A.
Filiación:Dept. de Quím. Física, Inst. de Cié. dels Materials, Universitat de València, E-46100 Burjassot, València, Spain
Departamento de Física, Universidad de Buenos Aires, Ciudad de Buenos Aires, Argentina
Dept. de Bioquim. i Biol. Molec., Universitat de València, València, Spain
Department of Chemistry, University of Cambridge, Cambridge, United Kingdom
Palabras clave:Calibration; Fractal calibration; Organic gel packings; Polymers; Universal calibration; Crosslinking; Entropy; Fractals; Gels; Polymers; Pore size; Solvents; Chromatographic distribution coefficients; Size exclusion chromatography; organic compound; polymer; solvent; article; calibration; channel gating; chemical interaction; chromatography; column chromatography; cross linking; data analysis; elution; enthalpy; entropy; experimental test; fractal analysis; gel; gel permeation chromatography; observation; priority journal; regulatory mechanism; separation technique
Año:2003
Volumen:996
Número:1-2
Página de inicio:33
Página de fin:43
DOI: http://dx.doi.org/10.1016/S0021-9673(03)00609-5
Título revista:Journal of Chromatography A
Título revista abreviado:J. Chromatogr. A
ISSN:00219673
CODEN:JCRAE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219673_v996_n1-2_p33_GarciaLopera

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Citas:

---------- APA ----------
García-Lopera, R., Irurzun, I., Abad, C. & Campos, A. (2003) . Fractal calibration in size-exclusion chromatography: I. An introduction. Journal of Chromatography A, 996(1-2), 33-43.
http://dx.doi.org/10.1016/S0021-9673(03)00609-5
---------- CHICAGO ----------
García-Lopera, R., Irurzun, I., Abad, C., Campos, A. "Fractal calibration in size-exclusion chromatography: I. An introduction" . Journal of Chromatography A 996, no. 1-2 (2003) : 33-43.
http://dx.doi.org/10.1016/S0021-9673(03)00609-5
---------- MLA ----------
García-Lopera, R., Irurzun, I., Abad, C., Campos, A. "Fractal calibration in size-exclusion chromatography: I. An introduction" . Journal of Chromatography A, vol. 996, no. 1-2, 2003, pp. 33-43.
http://dx.doi.org/10.1016/S0021-9673(03)00609-5
---------- VANCOUVER ----------
García-Lopera, R., Irurzun, I., Abad, C., Campos, A. Fractal calibration in size-exclusion chromatography: I. An introduction. J. Chromatogr. A. 2003;996(1-2):33-43.
http://dx.doi.org/10.1016/S0021-9673(03)00609-5