17
Views
2
CrossRef citations to date
0
Altmetric
Original Articles

Osmotic Effects in Gel Permeation Chromatography with Multicomponent Solvents

, &
Pages 3163-3173 | Received 24 Mar 1995, Accepted 02 Apr 1995, Published online: 23 Sep 2006
 

Abstract

Secondary separation mechanisms are important in a GPC-column when multicomponent eluents are used. The solvent will be at a lower potential in the injected sample than in the eluent, leading to a separation or redistribution of components by the osmotic pressure differences. The smallest components will dominate the separation due to the highest diffusion rates. When charged macromolecules are present, the Donnan equilibrium also contributes to the redistribution of salt. For some surfactant systems, the micellar size is very sensitive to salt concentration, which can give quite complex GPC-chromatograms. In order to discuss GPC-results from polymer-surfactant systems with repulsive interactions, these secondary separation mechanisms must be included.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.