Cromatografia de exclusion molecular de (bio)polielectrolitos

  1. Rosa García, Iolanda Porcar 1
  2. Agustín Campos 1
  3. Juan E. Figueruelo 1
  4. Iolanda Porcar Boix
  1. 1 Universitat de València
    info

    Universitat de València

    Valencia, España

    ROR https://ror.org/043nxc105

Revista:
Revista Iberoamericana de Polímeros

ISSN: 1988-4206

Año de publicación: 2002

Volumen: 3

Número: 1

Páginas: 48-58

Tipo: Artículo

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Otras publicaciones en: Revista Iberoamericana de Polímeros

Resumen

The elution behaviour of several standards ionic polymers, such as poly (L-glutamic acid) (PGA), sodium poly(styrene sulfonate) (PSSNa) and poly(acrylic acid) (PAA) has been analyzed by aqueous size exclusion chromatography (ASEC) as a function of pH and ionic strength (I) of eluent, on both inorganic- and organic-based packings. Quantitative evaluation of secondary effects, such as ionic contributions, is undertaken taking into account electric double-layer effects and the effective radius of polyion. A second order dependence of the elution volume on I-1/2is obtained in fair agreement with experimental results. Suggestions on quantitative evaluation of hydrophobic effects are also pointed out.

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