Iontosorb AV

Iontosorb AV is a modified bead-form cellulose containing aminoaryl-beta-ethylsulfone groups in flexible chains:

Chemical Structure (1587 bytes)

Content of functional groups

The content of amino aryl groups in Iontosorb AV can be regulated according to customer's demands in the range 0.02 to 1.36 mmol/g.

Iontosorb AV is delivered with the following content of functional groups:

Content of functional groups [mmol g-1] dry sorbents
 AV 50AV 100AV 200AV 500
LOW 0.02 - 0.29 0.02 - 0.18 0.02 - 0.18 0.02 - 0.13
MEDIUM 0.30 - 0.86 0.19 - 0.55 0.19 - 0.51 0.14 - 0.36
HIGH 0.86 - 1.36 0.56 - 0.78 0.52 - 0.73 0.37 - 0.53

In an order a demanded content of functional groups shall be given (e.g. Iontosorb AV 100 M means demanded content of functional groups 0.19 - 0.55 mmol/g dry).

The water regain in sorbents depends not only on the concentration of functional groups, type of the original Bead Cellulose, but on the manner of modification the cellulose, too.

Iontosorb AV can be used not only as a carrier for enzyme immobilization, but also as a semi-product for preparing various types of new sorbents, especially chelating.

For binding biologically active substances, Iontosorb AV may be activated by diazotation or by reaction with thiofosgene. In the former case, the carrier reacts with the aromatic, heteroaromatic or active methylene groups of biologically active substances, while in the latter case with amino groups.

Applications of Iontosorb AV

APPLICATION OF NEW RESIN GEL FOR MEASURING MERCURY BY DIFFUSIVE GRADIENTS IN A THIN-FILMS TECHNIQUIE

P. Divis, R. Szkandera, L. Brulik, H. Docekalova, P. Matus, M. Bujdos

Analytical Sciences, 25 (2009) 575-578

An infrared spectra of 6-mercaptupurine modified Iontosorb AV
av01
av02 Measured mass Mercury in the resin lyaers
(circles - Duolite GT 73;
squares -Iontosorb AV-MP)
immersed  in a Hg solution (10 ug L-1) for various periods.

APPLICATION OF A 6-MERCAPTOPURINE  FUNCTIONALIZED SORBENT FOR DIFFUSIVE GRADIENTS IN THIN FILMS TECHNIQUIE

P. Divis, R. Szkandera, P. Matus

Chemicke Listy, 99 (2008) 1234-1235

av03 Infrared spectrum of Iontosorb AV (1) and functionalized Iontosorb AV with 6-mercaptopurine (2)

Technical Parameters

Porozity TypeParticle Size (μm)

AV 50

30 - 50
50 - 80
80 - 100
100 - 250
250 - 500

AV 100

30 - 50
50 - 80
80 - 100
100 - 250
250 - 500

AV 200

50 - 80
80 - 100
100 - 250
250 - 500

AV 500

50 - 80
80 - 100
100 - 250
250 - 500

Where to continue?

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 →  IONTOSORB CNC is a sorbent with fixed cyanuric chloride.
 →  IONTOSORB TS is a sorbent with fixed p-tosyl chloride.
 →  IONTOSORB A-UREA is a sorbent with fixed Urea on primary aromatic amine.