Sorption of water vapor by multilayered composite films measured using infrared spectroscopy

Barbara A. MacNeill, Gary W. Simmons, Gregory S. Ferguson

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Organic/inorganic composite films formed by the alternate adsorption of poly(diallyldimethylammonium chloride) and exfoliated sheets of Laponite RD, a synthetic sheet-silicate mineral, respond dramatically to changes in ambient relative humidity. We have used a chemically selective analytical technique, infrared (IR) spectroscopy, to monitor the sorption and desorption of water vapor by a film over a wide range (approximately 0-87%) of relative humidity. Correlation of the IR response to separate gravimetric measurements indicated that this method provides a quantitative measure of water in the film. The response of the film was stable over a period of at least 2 months.

Original languageEnglish (US)
Pages (from-to)455-461
Number of pages7
JournalMaterials Research Bulletin
Volume34
Issue number3
DOIs
StatePublished - Feb 1999

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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