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Chalmers

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 […]

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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

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Modeling, processing and optimization of highly-filled polymer wood fiber composites 

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 »

Plasticization and partial depolymerization of lignocellulose-based materials  

This project is a part of the competence center FibRe. This particular PhD student project aims to plasticize the lignin in the cell walls. The first part will be to extract lignin from wood and wheat straw, and to evaluate how different plasticizers affect the material properties. This will then be extrapolated to lignocellulose-based fibers.

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Design for Circularity: Lignocellulosic based Thermoplastics – FibRe

Global warming is one of the largest threats ever to our planet which can completely alter our living conditions. Human contributions to emissions of green-house gases must decrease, and a drastically decreased use of fossil resources is a key step to achieve this. Daunting 320 million tons of plastics are annually produced in the world,

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Enzyme discovery and enzyme application on wood

Our project aims to identify enzymes that have the ability to increase the efficiency of the biorefinery process, designed for the production of biofuels, -chemicals, and -materials. Specifically, this project aims to find, characterize, and utilize, enzyme that attack specific bonds in the complex biomass structure, to increase the saccharification efficiency of cellulolytic enzyme cocktails

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Valorization of lignocellulosic biomass for non-fossil chemicals and fuels using photolysis based on LED

Sawdust, a valuable lignocellulosic biomass, is today considered waste and burnt to generate heat. Depending on the sawing process, sawdust might be up to 50% of the timber. An energy efficient valorization of lignocellulosic waste into non-fossil chemicals and fuels minimizes the CO2 footprint and contributes to a sustainable production. A major challenge is to

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KAW Biocomposites

Technical objective The project is focused on materials design of biocomposites which are semi-structural, recyclable and/or biodegradable. The term “semi-structural” needs to be defined. If 30wt% glass fiber/polypropylene is selected as the reference material for substitution, it would mean that the modulus should be > 6 GPa and the tensile strength > 85 MPa. In

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Conducting cellulose fibres and yarns for circular electronic textiles

Conducting fibres and yarns are essential components of the next generation of wearable electronics that seamlessly integrate electronic function into one of the most versatile and most widely used form of materials: textiles. Necessary requirements are a high degree of wash and wear resistance. Traditionally, colouring of cotton, viscose and lyocell fibres is done with

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Recyclable and Creep Resistant Polyethylene – through Transient Cellulose Networks

Plastics enhance almost every aspect of human life from food consumption to medical care and even energy production. However, the often superficial use of plastics means that a large fraction of this versatile class of materials is not recycled but, instead, burned for energy recovery, buried as waste in landfills, or worst case simply discarded

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