Effect of electrolytes and surfactants on the thermoseparation of an ethylene oxide–propylene oxide random copolymer in aqueous solution

Research output: Contribution to journalArticle


The thermoseparation of aqueous solutions of Breox 50 A 1000, an ethylene oxide-propylene oxide 50:50 (w/w) random copolymer, was studied. The cloud-point diagram for Breox in water solution and the effects of electrolytes and surfactants on the cloud-point temperature (CPT) were determined. The Breox concentration in both phases after the thermoseparation was followed with a reversed-phase HPLC method. The effects of separation temperature and additives on phase composition were evaluated.


  • Maria Teresa Cunha
  • Folke Tjerneld
  • Joaquim M S Cabral
  • Maria Raquel Aires-Barros
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Biological Sciences


  • Electrolytes, Surfactants, Ethylene oxide-propylene oxide copolymer, Breox
Original languageEnglish
Pages (from-to)53-60
JournalJournal of Chromatography. B
Issue number1-2
Publication statusPublished - 1998
Publication categoryResearch