Synthesis and application of silica hybrids grafted with new guanidine-containing polymers as highly effective adsorbents for bilirubin removal

Alexander S. Timin, S. Yu Khashirova, Azamat Zhansitov, E. V. Rumyantsev

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The development and design of adsorbents with high adsorption performance is the actual aim for successful toxin removal. In this work, we report the performance of new guanidine-containing polymers as a shell orientated around silica particles with following application for effective bilirubin removal. To evaluate polymer-shell modification, Fourier transform infrared spectroscopy and high-resolution electron microscopy were performed. Changes in surface morphology of polymer-coated silicas were detected. It was shown that polymeric shell completely covers silica surface. The grafting amount was evaluated by thermogravimetric and was in 18–34 % range. Incorporation of guanidine containing polymers into silica matrix leads to the great increase in adsorption capacity According to the Langmuir model, the maximum adsorption capacity for bilirubin was 43.47 mg/g. We also demonstrated that prepared polymer-coated silicas could well adsorb bilirubin from the bilirubin-albumin solution at low concentration of albumin. Therefore, this study revealed that guanidine-containing polymers have great potential to serve as effective agents for improving of the adsorbent for bilirubin removal. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)1667-1674
Number of pages8
JournalColloid and Polymer Science
Volume293
Issue number6
DOIs
Publication statusPublished - 1 Jun 2015
Externally publishedYes

Keywords

  • Adsorption
  • Bilirubin
  • Guanidine-containing polymers
  • Polymer functionalization
  • Silica core

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry
  • Colloid and Surface Chemistry

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