Purpose of the project is to study mass transport of ionic liquids into wood pieces and fibers and consequent lignin and hemicellulose transport out from the pieces. Therefore, characterisation techniques to investigate the location of ionic liquids and lignin in the fiber structure are needed to be developed. Examples of such techniques are X-ray imaging, […]
Mass transport in wood components from processed woods(III-3) Läs mer »
Climate change has shown to alter the mechanical properties of wood. This suggest an alteration of the hygromechanical behaviour, behaviour that by itself is not fully elucidated yet. The deeper understanding of the hygromechanics of wood is important in the correct prediction and interpretation of drying and long-term behaviour of this material. In this light,
Carbon fibers made completely from biobased material with a low climate impact is an area of research that have seen significant breakthroughs during the last years. Forest-based carbon fibers from certified forests have a high value and potential to stimulate new value chains in the area of light-weight composites, making it possible to use carbon
The aim of this project is to develop and increase the knowledge of thermoplastic materials from bleached pulp through minimal chemical modification.
Development of thermoplastic lignocellulose based materials Läs mer »
The project contributes to strengthened Swedish competitiveness through its expected research results and new fundamental knowledge for the development of an efficient pulp washing process and thus through an increased pace of innovation in the transition to a circular economy. After pulping the wood chips, the resulting pulp fibres and cooking liquor are separated in a
Efficient Washing of Paper grade pulp in the kraft process Läs mer »
We investigate how lignin-derived carbon materials can be tailored for use in electronic applications, primarily as electrodes in electrochemical capacitors.
WWSC2.0 Lignin Materials Läs mer »
Biocomposites are a critical ingredient in the context of overarching societal efforts to increase the use of renewable materials. Therefore, the use of polymer with natural fiber reinforcements is expected to increase significantly. A current drive for polymer biocomposites is to maximize the use of renewable content in mass production systems. However, the full potential
Modeling, processing and optimization of highly-filled polymer wood fiber composites Läs mer »
The current and future environmental challenges call for improved and more sustainable processes in the pulp industry. To contribute to a sustainable and competitive Swedish bioeconomy the pulp industry needs to increase efficiency without increasing the use of hazardous chemicals. Oxygen delignification is a unit process that has been used in pulp mill fiberlines between
The kinetics of lignin extraction in oxygen delignification. Läs mer »
The overall aim is to enable an upscaled process for textile fiber production based on alternative cellulose rich feedstocks together with TreeToTextile’s process, which is resource and energy-efficient without use of toxic chemicals. The proposed project focuses on the knowledge development for utilization of cellulose from residual streams, such as agricultural waste streams, recycled cartonboard/paper,
Circular cellulose to textile fiber production Läs mer »
The kraft process is today the dominant industrial technology for the production of pulp from wood.In this process, wood chips are boiled with chemicals in order to dissolve lignin, hemicellulose andextractives. The process itself contains several complex mass transport mechanisms, where thechemicals are to be transported into the wood chip and then further into the
Multi scale modeling of the delignification kinetics during kraft cooking Läs mer »
The structure of wood is complex with many components. As new cellulose-based materials and devices are to be developed and optimized it is crucial to understand the material microstructure of wood and also the properties of its individual microstructural constituents. Electron microscopy offers a unique capability for site specific imaging, diffraction and spectroscopy with high
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