Ion Exchange Celluloses for Chromatographic Separations

Preparation of Chemically Modified Cellulose Exchangers and their use for the Preconcentration of Trace Elements

“…34 However, if the cellulose is cross-linked by a difunctional reagent before introduction of the ionic group, May 1981 85 fiber structure is retained and a much higher capacity may be reached. Guthrie and Bullock 35 have tested about 30 potential cross-linking agents and found di(2-sulfatoethyl)amine, 1,4-disulfatobutane, 1,3-dichloro-2-propanol, divinylsulfone, and formaldehyde to be very suitable for this purpose.…”

“…The resulting cation exchange cellulose has a capacity of 1.4 meq/g. 35 The bulk of analytical chemistry performed with ion-exchange celluloses appears to be in the field of affinity chromatography. 48 Work done in the field of inorganic chromatography has been reviewed by Muzzarelli 49 and will only be considered if it applies to our present problem, the concentration of trace ion species.…”

Cellulose derivatives containing carboxylic acid groups

“…Next to solubility ion-exchange is probably the most frequent use of cellulose derivatives containing carboxylic acid groups. There are many articles on this subject (Abrams and Benezra, 1967 ;Davidova and Rachinskii, 1965;Guthrie, 1952Guthrie, , 1971Guthrie and Bullock, 1960;Wheaton and Seamster, 1966), so all that will be attempted here is to compare the ion-exchange capacity as well as the ionic strength in the form of ionization constant for the various derivatives discussed in this report.…”