Ion-exchange foam chromatography. Part I. Preparation of rigid and flexible ion-exchange foams

T. Braun, O. Békeffy, I. Haklits, K. Kádár, G. Majoros

Research output: Article

19 Citations (Scopus)

Abstract

In order to be able to apply the principles of foam chromatography to ion-exchange processes, preparative methods for open-cell ion-exchange foams, were investigated. Homogeneous ion-exchange foams were prepared by introducing ion-exchange groups on previously prepared phenol-formaldehyde, polyurethane and polyethylene foams. The maximum capacity of the produced sulfonated phenol-formaldehyde cation-exchange foams was 1.85 meq g-1; that of the styrene-polyurethane interpolymer anion-exchange foams was 2.2 meq g-1. Weak carboxylic ion-exchange foams were prepared by radiation grafting of polyurethane and polyethylene foams; the maximum capacity of these foams was 4.02 meq g-1. Heterogeneous ion-exchange foams were prepared by foaming a fine powder of a commercially available cation exchanger with the precursors of open-cell polyether-type polyurethane foam. The capacity of such a foam containing 26% ion-exchange powder was 1.0 meq g-1. The kinetics of the cation-exchange process on the heterogeneous foams was measured with 85Sr.

Original languageEnglish
Pages (from-to)45-54
Number of pages10
JournalAnalytica Chimica Acta
Volume64
Issue number1
DOIs
Publication statusPublished - 1973

Fingerprint

Ion Exchange
Ion Exchange Chromatography
Chromatography
foam
chromatography
Foams
ion exchange
Ion exchange
Cations
Polyethylene
Phenol
Powders
Formaldehyde
Polyurethanes
Styrene
formaldehyde
Anions
phenol
Radiation
Polyethers

ASJC Scopus subject areas

  • Biochemistry
  • Analytical Chemistry
  • Spectroscopy
  • Environmental Chemistry

Cite this

Ion-exchange foam chromatography. Part I. Preparation of rigid and flexible ion-exchange foams. / Braun, T.; Békeffy, O.; Haklits, I.; Kádár, K.; Majoros, G.

In: Analytica Chimica Acta, Vol. 64, No. 1, 1973, p. 45-54.

Research output: Article

Braun, T. ; Békeffy, O. ; Haklits, I. ; Kádár, K. ; Majoros, G. / Ion-exchange foam chromatography. Part I. Preparation of rigid and flexible ion-exchange foams. In: Analytica Chimica Acta. 1973 ; Vol. 64, No. 1. pp. 45-54.
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