Abstract
New acidic organosolv pulping processes, such as Acetosolv, Formacell and Milox, promise to have superior potential in terms of purification selectivity and specific investment costs. Consequently, a thorough investigation of these new acidic pulping processes in comparison to state-of-the-art acidic magnesium sulfite technology was conducted. The impact of pulping and bleaching parameters on the physical and chemical characteristics was studied to compare process efficiency and selectivity for each type of pulp made from Eucalypt wood. In addition to a detailed analysis of the chemical composition and physical properties on a molecular and supramolecular level, the TCF-bleached dissolving pulps were tested for their applicability in viscose fiber production. The influence of pulp properties as determined by standard and advanced analytical methods on process performance and selected fiber properties is emphasized.
References
Avela E., Erva J., Hackman B., Kaila E., Laamanen L., Räsänen R. and Sihtola H. 1967. Sulfite pulps for HWM-fibers. Pure Appl. Chem. 14(3-4): 289–301.
Götzinger G., Schrittwieser A. and Mühlbacher R. 2000. Monosulfite splitting-an important part of the secondary recovery system of the magnesium base acid bisulfite cooking process. Lenz. Ber. 79: 36–38.
Hermans P.H. 1941. The analogy between the mechanism of deformation of cellulose and that of rubber. J. Phys. Chem. 45: 827–836.
Kleinert T.N. and Salzle E. 1977. Recovery of cellulose from fibrous plant raw materials-by a continuous decomposition process using aq. aliphatic alcohols or ketones. Patents DE 2644155, AT 7706645.
Mark H. 1941. Tappi Section-Paper Trade Journal 34: 28–35.
Peter W. and Höglinger O. 1986. Herstellung von Kunstfaserzellstoff nach dem Organosolv-Aufschlussverfahren. Lenz. Ber. Heft 61: 12–16.
Puls J., Saake B., Parajo J.C., Abad S., Sixta H., Harms H., Fink H.P., Weigel P., Al Ghatta H. and Glionna A. 1999. Comparative production of dissolving pulps by Acetosolv-, Formacell-, and Milox-pulping. Proceedings of ISWPC, June 7-10.
Röhrling J., Potthast A., Rosenau T., Lange T., Ebner G., Sixta H. and Kosma P. 2002. A novel method for the determination of carbonyl groups in cellulosics by fluorescence labeling. Part I: Method development. Biomacromolecules 3: 959–968.
Schelosky N., Röder T. and Baldinger T. 1999. Molecular mass distribution of cellulosic products by size exclusion chromatography in DMAc/LiCl. Das Papier 53(12): 728–738.
Sihtola H. and Neimo L. 1963. Changes in ''Carbonyl Spectrum'' during bleaching, steeping, and aging. Tappi 46(12): 730–734.
Sixta H. 2000. Comparative evaluation of TCF bleached hardwood dissolving pulps. Lenz. Ber. 79: 119–128.
Sixta H. 2001. Comparison between new Organosolv and acid sulfite dissolving pulps for viscose fibers. Das Papier 55: 22–31.
Sixta H. and Borgards A. 1999. New technology for the production of high-purity dissolving pulps. Das Papier 53(4): 20–34.
Treiber E., Rehnström J., Ameen C. and Kolos F. 1962. Using a laboratory viscose small-scale plant to test chemical conversion pulps. Das Papier 16(3): 85–94.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Sixta, H., Harms, H., Dapia, S. et al. Evaluation of new organosolv dissolving pulps. Part I: Preparation, analytical characterization and viscose processability. Cellulose 11, 73–83 (2004). https://doi.org/10.1023/B:CELL.0000014767.47330.90
Issue Date:
DOI: https://doi.org/10.1023/B:CELL.0000014767.47330.90