Cellulose Cetyltrimethylammonium bromide

As an alternative to cellulose acetate strips, this support can be used for the separation of glycosami-noglycans. It offers the possibility to separate these compounds into two dimensions. For visualization, the glycosaminoglycanes are at first fixed in the gels by Cetavlon (cetyltrimethylammonium bromide) and then stained with Toluidine blue. 

Solubilization.—Mukherjee has provided a general review of micellar aggregation and solubilization and discussed the microenvironments of benzene and naphthalene in Triton X-100 micelles in terms of a two-state model involving competition of core and surface solubilization. The partition coefficients of p-nitrophenylacetate and methyl p-toluenesulphonate between water and cetyltrimethylammonium bromide micelle have been measured using dialysis by an artificial kidney." Since monomeric surfactant may be transported across the regenerated cellulose membrane, such experiments require careful attention to detail and caution in their interpretation. In the present case, K values obtained accord well with the literature. 

As described above, interactions between oppositely charged surfactants and polyelectrolytes in aqueous solutions can lead to associative phase separation, where the concentrated phase assumes the form of a viscous liquid, gel, liquid crystal or precipitate. This behavior has been exploited to form gel particles, which have been prepared by drop-wise addition of cellulose-based polycation solution (chitosan or-, N,N,N-trimethylammonium derivatized hydroxyethyl-cellulose) to anionic (sodium dodecyl sulfate, sodium perfluorooctanoate) and cationic (cetyltrimethylammonium bromide/sodium perfluorooctanoate) surfactant solutions [76-80]. 

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