Suppression of the t g-nanoconfinement effect in thin poly(vinyl acetate) films by sorbed water

Soyoung Kim, Manish K. Mundra, Connie B. Roth, John M. Torkelson

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

Suppression of the Tg-nanoconfinement effect in thin poly(vinyl acetate) films by sorbed water was studied by several researchers. Keddie and co-researchers reported that nanoconfinement reduces the glass transition temperatures (Tgs) of polystyrene (PS) films supported on silica and poly(methyl methacrylate) (PMMA) films supported on gold. They demonstrated that the Tg increase in an ultrathin layer at the PMMA-silica interface is greater than the Tg decrease in a similar layer at the PMMA-air interface. Fukao and co-researchers characterized Tα, the peak temperature in the T dependence of the imaginary part of the complex dielectric constant, at 100 Hz. Characterizing creep compliance in microbubble experiments, O'Connell and McKenna concluded that there was little or no Tg-confinement effect in free-standing films as thin as 27 nm. Because they floated films on water prior to experiment, their films should be considered wet.

Original languageEnglish (US)
Pages (from-to)5158-5161
Number of pages4
JournalMacromolecules
Volume43
Issue number11
DOIs
StatePublished - Jun 8 2010

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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