Entropy of aqueous surfaces. Application to polymeric Langmuir films

Louise Deschênes*, Hans Lyklema, François St-Germain

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)

Abstract

Measuring surface (excess) entropies provides a bounty of valuable structural information that is hard to obtain otherwise. In the paper these quantities are defined and procedures of measurements discussed. Mostly they involve measurements at different temperatures. A review is given for interfaces with aqueous solutions in the absence of polymers. This review illustrates how, sometimes unanticipated, pieces of information are obtained, for example with cloud seeding and a possible explanation of the Jones-Ray effect. As a novel extension the procedure is applied to deposited, or Langmuir, monolayers of poly(ethylene oxide)-poly(propylene oxide) block copolymers. It will be shown how the various phase transitions and associated configurations of these polymers can be recognized and monitored.
Original languageEnglish
Pages (from-to)149-162
JournalAdvances in Colloid and Interface Science
Volume247
DOIs
Publication statusPublished - 2017

Keywords

  • Jones-Ray effect
  • Langmuir monolayers
  • PEO
  • PPO
  • Surface entropy
  • Surface tension

Fingerprint Dive into the research topics of 'Entropy of aqueous surfaces. Application to polymeric Langmuir films'. Together they form a unique fingerprint.

  • Cite this