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1-wood components

Physical properties characterization of cellulose biocomposites

Advanced cellulose-based biocomposites are bio-degenerable mateirals for a sustainable material. These materials generally have complicated and highly heterogeneous optical and mechanical properties. The developments and applications of such materials demand a thorough investigation of their physical properties and their structure-property relationship. This project aims to characterize the optical and mechanical properties using experiments and simulation.

Physical properties characterization of cellulose biocomposites Läs mer »

Mass transport in wood components from processed woods(III-3)

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 »

A multiscale modelling approach aided by X-ray techniques to deepen the understanding of the effect of climate change on the hygromechanical behaviour of wood

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,

A multiscale modelling approach aided by X-ray techniques to deepen the understanding of the effect of climate change on the hygromechanical behaviour of wood Läs mer »

Improved uniformity of the fibers liberated in the kraft pulp digester 

This project sets out to elucidate mass transport characteristics during delignification of wood chips as a means of understanding and controlling non-uniform delignification effects, associated to low efficiency and poor property control in the current pulping processes. To obtain information on local variations of delignification effect in a wood chip, the treated chips will be

Improved uniformity of the fibers liberated in the kraft pulp digester  Läs mer »

Wood modification towards hierarchical catalyst

Electrocatalytic reaction is a green technology for sustainable energy conversion, materials design, environment remediation, and green chemistry, where the role of catalyst is essential. Hierarchical structures combining multi-scale pores are favorable due to combined high specific surface area, mass diffusion in the structure and accessibility to the surface. In nature, biological materials are much more

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Förhorning av träfibrer

Projektet går ut på att genom experimentella studier bygga upp en kunskap kring förhorning av komponenterna i träfibrer. Förhorning är ett fenomen där, i nuläget praktiskt sett irreversibla, processer i samband med torkning förändrar fibrernas svällning och flexibilitet och därmed bindningsförmåga. Bindningsförmågan till andra fibrer har stor inverkan på hur starka fibernätverk kan skapas och

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Quantifying fire-retardant concentrations in fire-retardant treated wood

This project focuses on one of the most basic questions within the topic of fire retarded (FR) treated wood; “how we can actually measure the concentration of FR in wood specimens”, this seems like a trivial question, but is actually a significant issue, barrier to further research studies, and more wide spread usage of wood

Quantifying fire-retardant concentrations in fire-retardant treated wood Läs mer »

Uncovering the synergistic effects between cellulose and lignin for advanced forest-based carbon fibers

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

Uncovering the synergistic effects between cellulose and lignin for advanced forest-based carbon fibers Läs mer »

Water based wood treatment

For a more sustainable production of wood aerogel, treatment with the water based solvent, NaOH, can give the wood template a porous structure in sub-zero conditions. However, it is found that the porosity of the wood templates treated with NaOH (aq) can be affected at room temperature conditions as well. Towards a greener aerogel production,

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