TY - JOUR
T1 - Sorption of water vapor by multilayered composite films measured using infrared spectroscopy
AU - MacNeill, Barbara A.
AU - Simmons, Gary W.
AU - Ferguson, Gregory S.
N1 - Funding Information:
B.A.M. acknowledges financial support from the NSF (#DMR-9218093) and Lehigh University (Roy Eckart College Scholar Program and Sherman Fairchild Summer Scholar Program). We gratefully acknowledge Southern Clay Products for support of this research. We thank Dr. Elaine Kleinfeld for helpful discussions, and Perkin-Elmer for the donation of the IR spectrometer.
PY - 1999/2
Y1 - 1999/2
N2 - 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.
AB - 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.
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U2 - 10.1016/S0025-5408(99)00029-X
DO - 10.1016/S0025-5408(99)00029-X
M3 - Article
AN - SCOPUS:0032650366
VL - 34
SP - 455
EP - 461
JO - Materials Research Bulletin
JF - Materials Research Bulletin
SN - 0025-5408
IS - 3
ER -