Solution behavior of perfluoroalkanes and perfluoroalkylalkane surfactants in n-octane

Pedro Morgado, Rogério Tomás, Honggang Zhao, M. Carolina Dos Ramos, Felipe J. Blas, Clare McCabe, Eduardo J.M. Filipe*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


Apparent molal volumes of a number of n-perfluoroalkanes (PA) and perfluoroalkylalkanes (PFAA) in n-octane have been measured at 298.15 K as a function of composition. The corresponding partial molal volumes at infinite dilution have been obtained by extrapolating the apparent molal volumes to zero composition. The results were interpreted using the hetero-SAFT-VR equation of state. The perfluoroalkylalkanes were modeled as heterosegmented diblock chains, and the cross interactions, both intra- and intermolecular, were characterized using parameters developed in earlier studies of alkane + perfluoroalkane mixtures. Through this strategy, a fully predictive approach has been developed that is able to accurately predict the volumetric behavior of the solutions of perfluoroalkylalkanes studied, without fitting to any experimental data for perfluoroalkylalkanes.

Original languageEnglish
Pages (from-to)15962-15968
Number of pages7
JournalJournal of Physical Chemistry C
Issue number43
Publication statusPublished - 1 Nov 2007

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Energy
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films


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