Details

Autor(en) / Beteiligte

• Zimmerman, Bonnie
• Chow, James
• Abbott, Albert G.
• Ellison, Michael S.
• Kennedy, Marian S.
• Dean, Delphine

Titel

Variation of Surface Charge along the Surface of Wool Fibers Assessed by High-Resolution Force Spectroscopy

Ist Teil von

• Journal of engineered fibers and fabrics, 2011-01, Vol.6 (2), p.61-66

Ort / Verlag

London, England: SAGE Publications

Erscheinungsjahr

2011

Link zum Volltext

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• In this study, we have mapped the surface charge of wool fibers using chemically specific high-resolution force spectroscopy in order to better understand the dispersion of amino acids in relation to fiber morphology. The inter-surface forces between standard atomic force microscopy (AFM) probe tips (tip radius ∼ 50 nm) functionalized with COOH and NH3 terminated alkanethiol self assembling monolayers and the wool surface were used to estimate the surface charge per unit area using linear Poisson-Boltzmann-based electrostatic double layer theory. The positional measurement of nano-scale surface charge showed a correlation between the surface charge and fiber morphology, indicated that basic amino acids are located near the scale edges.