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Surfactant adsorption by total internal reflection Raman spectroscopy. Part III: Adsorption onto cellulose

Woods, David A.; Petkov, Jordan; Bain, Colin D.

Surfactant adsorption by total internal reflection Raman spectroscopy. Part III: Adsorption onto cellulose Thumbnail


Authors

David A. Woods

Jordan Petkov

Colin D. Bain



Abstract

TIR Raman spectroscopy has been used to study the adsorption of surfactants onto cellulose. The cellulose was prepared by Langmuir–Blodgett deposition of trimethylsilylcellulose onto silica followed by removal of the trimethylsilyl groups with acid to generate a hydrophilic surface. The reaction was followed in situ with Raman spectroscopy, revealing a two-step hydrolysis. Adsorption isotherms of hexadecyltrimethylammonium bromide (CTAB) and Triton X-100 (TX-100) on hydrophilic cellulose were obtained by TIR Raman scattering under quasi-equilibrium conditions where the bulk concentration was slowly but continuously varied. The isotherms of both surfactants are almost linear, in contrast to the isotherms on hydrophilic silica. The CTAB isotherm shows hysteresis depending on whether the concentration of the surfactant is increasing or decreasing due to a slow adsorption region. A mixture of TX-100 and CTAB shows ideal adsorption, in contrast to adsorption of the same mixture on silica where there is a strong cooperative interaction at low CTAB surface coverage.

Citation

Woods, D. A., Petkov, J., & Bain, C. D. (2011). Surfactant adsorption by total internal reflection Raman spectroscopy. Part III: Adsorption onto cellulose. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 391(1-3), 10-18. https://doi.org/10.1016/j.colsurfa.2011.07.027

Journal Article Type Article
Publication Date Nov 1, 2011
Deposit Date Nov 14, 2013
Publicly Available Date Jan 24, 2014
Journal Colloids and Surfaces A: Physicochemical and Engineering Aspects
Print ISSN 0927-7757
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 391
Issue 1-3
Pages 10-18
DOI https://doi.org/10.1016/j.colsurfa.2011.07.027

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Accepted Journal Article (655 Kb)
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Copyright Statement
NOTICE: this is the author’s version of a work that was accepted for publication in Colloids and surfaces A : physiochemical and engineering aspects. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Colloids and surfaces A : physiochemical and engineering aspects, 391, 1-3, 2011, 10.1016/j.colsurfa.2011.07.027




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