Chemical force microscopy of cellulosic fibers


Journal Article

Atomic force microscopy with chemically modified cantilever tips (chemical force microscopy) was used to study the pull-off forces (adhesion forces) on cellulose model surfaces and bleached softwood kraft pulp fibers in aqueous media. It was found that for the -COOH terminated tips, the adhesion forces are dependent on pH, whereas for the -CH3 and -OH terminated tips adhesion is not strongly affected by pH. Comparison between the cellulose model surfaces and cellulosic fibers under our experimental conditions reveal that surface roughness does not affect adhesion strongly. X-ray photoelectron spectroscopy (XPS) and Fourier Transformed Infrared (FTIR) spectroscopy reveal that both substrate surfaces have homogeneous chemical composition. The results show that chemical force microscopy can be used for the chemical characterization of cellulose surfaces at a nano-level. © 2005 Elsevier Ltd. All rights reserved.

Full Text

Duke Authors

Cited Authors

  • Bastidas, JC; Venditti, R; Pawlak, J; Gilbert, R; Zauscher, S; Kadla, JF

Published Date

  • December 14, 2005

Published In

Volume / Issue

  • 62 / 4

Start / End Page

  • 369 - 378

International Standard Serial Number (ISSN)

  • 0144-8617

Digital Object Identifier (DOI)

  • 10.1016/j.carbpol.2005.08.058

Citation Source

  • Scopus