PAPERmaking! FROM THE PUBLISHERS OF PAPER TECHNOLOGY Volume 2, Number 2, 2016
Strength of individual hardwood fibres and fibre to fibre joints, Marina Jajcinovic, Wolfgang J. Fischer, Ulrich Hirn, Wolfgang Bauer, Cellulose , Vol.23, No.3. In the present study hardwood fibre strength and fibre to fibre joint strength measurements using bleached, industrial eucalyptus kraft pulp have been performed. The device used for the measurements was a micro bond tester developed at Graz University of Technology. Results were compared to those obtained in previous studies. Morphology and rheology of cellulose nanofibrils derived from mixtures of pulp fibres and papermaking fines, Jérôme Colson, Wolfgang Bauer, Melanie Mayr, Wolfgang Fischer, Wolfgang Gindl-Altmutter, Cellulose , Vol.23, No.4. The rheological behaviour of homogenised fibres originally having different lengths was evaluated. For this purpose, mixtures of pulp fibres and fines were fibrillated mechanically without pre- treatment and characterised with regard to morphology and viscosity. Microfibrillated cellulose from agricultural residues. Part I: Papermaking application, Abeer M. Adela, Ahmed A. El-Gendy, Mohamed A. Diab, Ragab E. Abou-Zeid, Waleed K. El-Zawawy, Alain Dufresne, Industrial Crops and Products , Vol.93. In this work, we evaluated the preparation of MFC from biomass wastes using a new chemical pre-treatment method before applying the traditional mechanical method. Composite paper sheet samples were prepared from bleached rice straw and bagasse pulps by adding different percentages of MFC and both mechanical and optical properties of the resulting papers were studied. Research on mechanical combined with biological modification of OCC pulp to improve the strength of paper, Xiao-Di WANG, Chuan-Shan ZHAO, Yi-Fei JIANG, Wen-Jia HAN, Material Science and Environmental Engineering : Chapter 1. Material Science and Engineering, pp.48-56. Experimental results show that the water retention value and carboxyl content improved with the increase of beating degree. The performance of the paper generally increased with the increase in beating degrees. When beating combined with laccase/histidine, the physical properties of the pulp had undergone great changes. The laccase/histidine treated pulp gave the highest WRV value and carboxyl content, which led to the highest bonding of pulp fibres resulting in the highest strength of the paper. TESTING Theoretical modeling of water vapor transport in cellulose-based materials, Alemayehu H. Bedane, Mladen Eić , Madjid Farmahini-Farahani, Huining Xiao, Cellulose , Vol.23, No.3. The theory of mass transport in porous media is of fundamental importance for different applications such as food, paper packaging, textiles, and wood for building materials. In this study, a theoretical water vapour transport model has been developed for cellulose-based materials, such as paper and regenerated cellulose film. X-ray absorption and diffraction analysis for determination of the amount of calcium carbonate and porosity in paper sheets, O. Cherkas, T. Beuvier, S. Fall, A. Gibaud, O. Cherkas, T. Beuvier, S. Fall, A. Gibaud, Cellulose , Vol.23, No.5. Calcium carbonate as a filler provides specific properties to the paper like brightness, porosity, etc. Because of low retention, it is therefore interesting to develop some methods to analyse in a non- destructive way the content of calcium carbonate that remains in the paper. We report in this article an X-ray study of paper sheets with the aim to determine not only the content of calcium carbonate in a non-destructive way but also the porosity of the paper sheets.
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