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Effect of absorption of low-molecular-weight compounds by some polymer flocculants

  • Tatyana B. Zheftonozhskaya
  • , Olga O. Romankevich
  • , Vladimir G. Syromyatnikov
  • , Leonid A. Bulavin
  • , Vladislav Yu Kudrya
  • , Tymish Yu Ogul'chansky
  • , Valeriy M. Yashchuk
  • Kyiv National Taras Shevchenko University

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The sorption properties of the intramolecular complex - poly(acrylamide) to poly(vinyl alcohol) grafted copolymer (PVA-PAAN) in block state were investigated with respect to a number of compounds. The relatively small molecules of phenol, phenylalanine in water solution as well as nitrobenzene in hexane are strongly absorbed by PVA-PAAN films. The large humine acid molecules (sizes are larger by more than ≈ 10 times) are absorbed by PVA-PAAN very weakly. It was determined the absorption influence on the character of polymer film solution. In a number of cases the oscillation of the dilution and sorption were observed when determining the critical concentrations of guest molecules in the upper layer of polymer films were achieved. The possible mechanisms of absorption were discussed.

Original languageEnglish
Pages (from-to)263-269
Number of pages7
JournalMacromolecular Symposia
Volume114
DOIs
StatePublished - Feb 1997

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