Novel macroporous amphoteric gels: Preparation and characterization

S. Kudaibergenov, Zh Adilov, D. Berillo, G. Tatykhanova, Zh Sadakbaeva, Kh Abdullin, I. Galaev

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Macroporous amphoteric gels based on allylamine, methacrylic acid and acrylamide crosslinked by N,N!-methylenebisacrylamide were synthesized by radical copolymerization of monomers in cryoconditions. The composition of cryogels was determined by combination of potentiometric and conductimetric titrations. The morphology of cryogels was evaluated by scanning electron microscope (SEM). Cryogels exhibited sponge-like porous structure with pore size ranging from 50 to 200 μm. The values of the isoelectric points (IEPs) determined from the swelling experiments arranged between 3.5 and 4.3. The high adsorption-desorption capacity of amphoteric cryogels with respect to mM and trace concentrations of copper, nickel, and cobalt ions was demonstrated. It was shown that the macroporous amphoteric cryogels are able to adsorb up to 99.9% of copper, nickel, and cobalt ions from 10 -3 mol·L -1 aqueous solution.

Original languageEnglish
Pages (from-to)346-353
Number of pages8
JournalExpress Polymer Letters
Volume6
Issue number5
DOIs
Publication statusPublished - May 2012

Keywords

  • Macroporous amphoteric cryogels
  • Morphology
  • Polymer gels
  • Smart polymers
  • Swelling

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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