Russian Chemical Bulletin

, Volume 66, Issue 5, pp 857–861 | Cite as

Adsorption of organic molecules on a melamine-modified porous polymer

  • V. Yu. Gus´kov
  • R. V. Bilalova
  • F. Kh. Kudasheva
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Abstract

Inverse gas chromatography in the infinite dilution regime was used to study the adsorp-tion of organic molecules on a micromesoporous styrene-divinylbenzene copolymer modified with melamine deposited onto its surface in amounts of 10–6, 10–5, 10–4, 10–3, 10–2, and 5•10–2 weight parts. Contributions of different intermolecular interactions and polarity of the samples to adsorption energy values were calculated using LFER and by Dong method. Contributions of methyl group to Helmholtz adsorption energy and to its dispersion compo-nent were determined. The polarity of the modified samples showed a non-linear dependence on the amount of the deposited modifier (pC): at 4 < pC < 6, it increases as the modifier concentration grows, abruptly falls at pC = 3, and does not change with the further decrease in pC. This is probably caused by the formation of melamine intermolecular associates at higher modifier concentrations.

Keywords

melamine polarity linear free adsorption energy relationship 
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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  • V. Yu. Gus´kov
    • 1
  • R. V. Bilalova
    • 1
  • F. Kh. Kudasheva
    • 1
  1. 1.Bashkir State UniversityUfaRussian Federation

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