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The surface charge of regenerated cellulose fibres |
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| Authors: | Frederik Weber Georg Koller Robert Schennach Ingo Bernt Rene Eckhart |
| Institution: | 1. CD-Laboratory for Surface Chemical and Physical Fundamentals of Paper Strength, Graz, Austria 2. Institute of Solid State Physics, Graz University of Technology, Graz, Austria 3. Institute of Physics, University of Graz, Graz, Austria 4. Kelheim Fibres GmbH, Kelheim, Germany 5. Institute for Paper-, Pulp- and Fibre Technology, Graz University of Technology, Graz, Austria |
| Abstract: | In this paper the influence of charged species on the sheet strength of viscose fibres was investigated. Four samples of chemical modified viscose fibres, as well as a reference fibre were studied. The swelling of these viscose fibres and the breaking length of hand sheets have been determined. Comparing the results, the influence of both, swelling and surface charge on the bonding force, is evident. The allocation of the charges, induced by cationic starch and Carboxmethylcellulose, has been analyzed by Titration, attenuated total reflection spectroscopy (ATR) and X-ray photoelectron spectroscopy (XPS). Titration was used to make a first estimation of the charge distribution within the fibre. Using ATR and XPS, more detailed information about the surface charge has been achieved. All measurement methods showed a significant amount of charge on the fibre surface. |
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