Title: | Effect of surface properties of fibres on some paper properties of mechanical and chemical pulp |
Author(s): | Koljonen, Krista |
Date: | 2004-10-29 |
Language: | en |
Pages: | 79, [88] |
Department: | Department of Forest Products Technology Puunjalostustekniikan osasto |
ISBN: | 951-22-7268-7 |
Series: | Reports / Helsinki University of Technology, Laboratory of Forest Products Chemistry. Series A, 19 |
ISSN: | 1457-1382 |
Subject: | Paper technology |
Keywords: | mechanical pulp, chemical pulp, surface lignin, surface extractives, charge, acid-base properties, electron spectroscopy for chemical analysis (ESCA), atomic force microscopy (AFM) |
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Abstract:The overall goal of the thesis was to find correlations between the surface precipitates of pulps and selected strength properties of paper sheets. Special attention was paid to the surface lignin and extractives of fibres. The main surface-characterising techniques employed were electron spectroscopy for chemical analysis (ESCA), atomic force microscopy (AFM) and the polyelectrolyte titration method. In addition, a Wilhelmy balance for single fibres, time-of-flight secondary ion mass spectrometry (ToF-SIMS) and the fourier transform infrared (FTIR-PAS) method were applied.
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Parts:Koljonen K. and Stenius P., 2005. Surface characterisation of single mechanical fibres by contact angle measurement. Nordic Pulp and Paper Research Journal, submitted for publication.Koljonen K., Mustranta A. and Stenius P., 2004. Surface characterisation of mechanical pulps by polyelectrolyte adsorption. Nordic Pulp and Paper Research Journal 19, number 4.Koljonen K., Österberg M., Kleen M., Fuhrmann A. and Stenius P., 2004. Precipitation of lignin and extractives on kraft pulp: effect on surface chemistry, surface morphology and paper strength. Cellulose 11, number 2, pages 209-224.Koljonen K., Österberg M., Johansson L.-S. and Stenius P., 2003. Surface chemistry and morphology of different mechanical pulps determined by ESCA and AFM. Colloids and Surfaces A: Physicochemical and Engineering Aspects 228, numbers 1-3, pages 143-158.Maximova N., Österberg M., Koljonen K. and Stenius P., 2001. Lignin adsorption on cellulose fibre surfaces: effect on surface chemistry, surface morphology and paper strength. Cellulose 8, number 2, pages 113-125.Johansson L.-S., Campbell J. M., Koljonen K. and Stenius P., 1999. Evaluation of surface lignin on cellulose fibers with XPS. Applied Surface Science 144-145, pages 92-95. |
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