Quantitative description of temperature induced self-aggregation thermograms determined by differential scanning calorimetry

Stefana Milioto, Giuseppe Lazzara, Leonardo Chiappisi, Michael Gradzielski

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A novel thermodynamic approach for the description of differential scanning calorimetry (DSC) experiments on self-aggregating systems is derived and presented. The method is based on a mass action model where temperature dependence of aggregation numbers is considered. The validity of the model was confirmed by describing the aggregation behavior of poly(ethylene oxide)-poly(propylene oxide) block copolymers, which are well-known to exhibit a strong temperature dependence. The quantitative description of the thermograms could be performed without any discrepancy between calorimetric and van 't Hoff enthalpies, and moreover, the aggregation numbers obtained from the best fit of the DSC experiments are in good agreement with those obtained by light scattering experiments corroborating the assumptions done in the derivation of the new model.
Original languageEnglish
Pages (from-to)17609-17616
Number of pages8
JournalLangmuir
Volume28
Publication statusPublished - 2012

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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