Search for dissertations about: "ray pulp"
Showing result 1 - 5 of 27 swedish dissertations containing the words ray pulp.
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1. Pulp strength enhancement by oxygen delignification
Abstract : Oxygen delignification is widely used in the pulp and paper industry as a part of delignification process between the kraft cook and bleaching. However, its potential has not been fully utilized. READ MORE
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2. Kraft Pulp Fibre Surfaces. Chemical Composition and Effect on Pulp Bleachability
Abstract : The work presented in this thesis concerns studies of kraft fibre surfaces in respect of chemical composition and effect on pulp bleachability. Kraft fibre surfaces were studied by mechanical peeling using a disintegrator operated at 20.000-200.000 revolutions and a pulp consistency of 3% or 4. READ MORE
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3. Aspects of optimizing pulp fibre properties for tissue and packaging materials
Abstract : To improve the competitive advantages of pulp fibre-based materials for tissue and packaging over fossil-based products, it is essential to increase knowledge of the selectivity of the cooking and the chemimechanical processes by optimizing the unit operations of impregnation, cooking and refining. A general goal in pulping processes is to achieve as efficient and even fibre separation as possible. READ MORE
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4. Neutron and X-ray Surface Scattering Reveals the Morphology of Soft Matter Thin Films
Abstract : The last decades have been overshadowed by reports about the seemingly endless increase use of fossil-based resources. With the development of new products, our mindset is changing so that we more and more need to consider sustainability in our daily lives. READ MORE
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5. Molecular orientation in cellulose fibers and composites
Abstract : The scope of this thesis is to quantitatively investigate the molecular orientation distribution of regenerated cellulose fibers and composites. The molecular orientation is known to affect macroscopic properties such as tensile strength of the fiber. READ MORE