A5008194901- Wood Treatment and Properties
- Adsorption, diffusion, and thermodynamic properties of materials
- Natural Fiber Reinforced Composites
- Polymer Foaming and Composites
- Lignin and Wood Chemistry
- Thermal and Kinetic Analysis
- Hygrothermal properties of building materials
- Material Properties and Processing
- Textile materials and evaluations
- Polymer Nanocomposites and Properties
- Food Quality and Safety Studies
- Tree-ring climate responses
- Plant Surface Properties and Treatments
- Materials Engineering and Processing
- Additive Manufacturing and 3D Printing Technologies
- Forest Biomass Utilization and Management
- GABA and Rice Research
- Cultural Heritage Materials Analysis
- Chemical Thermodynamics and Molecular Structure
- Innovations in Concrete and Construction Materials
- Building materials and conservation
KTH Royal Institute of Technology
2015-2022
Abstract The effect of extractives removal on liquid sorption, swelling and surface energy properties unmodified wood (UW) thermally modified Scots pine heartwood (hW) (TMW) was studied. extraction performed by a Soxtec procedure with series solvents the results were observed multicycle Wilhelmy plate method, inverse gas chromatography (IGC) Fourier transform infrared (FTIR) spectroscopy. A significantly lower rate water uptake found for extracted UW, compared unextracted one. This is due to...
Abstract The objective of the study was to investigate water vapour sorption behaviour thermally modified (TM) wood powder, e.g. ground prepared from waste streams TM solid wood, and powder that extracted in pressurised hot water. Solid spruce steam conditions (210°C for 3 h), milled hot-water-extracted (HWE) at elevated pressure (140°C 1 h). results evidence hot-water extraction reduced accessible hydroxyl group concentration by removal amorphous carbohydrates. In contrast, enhanced...
During fibre processing, wood fibres are subjected to a range of physical and chemical conditions sufficient slightly alter their composition hence ultimate performance when used in the manufacture fibre-based composites. In order better understand effects refiner on material performance, were processing at different pressures (4, 6, 8 10 bar) subsequently dried flash drier. The analysed for changes surface area, energy, structure water vapour sorption characteristics. methods applied...
The objective of this work was to study the hygroscopicity and surface chemical composition thermally modified (TM) spruce. An effort also made if those features were influenced by a previous exposure significant increase in relative humidity (RH). TM unmodified Norway spruce (Picea abies Karst) samples, both solid ground form, prepared. Water vapour sorption characteristics samples obtained measuring isotherms using dynamic (DVS). acetone extracted non-extracted, analysed X-ray...
The objective of this work is to study the water vapor sorption and surface energy properties thermally modified wood (TMW) components, ie processing residuals in form sawdust. thermal modification was performed on spruce components using a steam-pressurized laboratoryscale reactor at two different temperature (T) relative humidity (RH) conditions, T . 150°C RH 100% (TMW150), 180°C 46% (TMW180). A dynamic (DVS) technique used determine isotherms samples for three adsorption-desorption cycles...
Abstract For climate and sustainability reasons, there is an interest incentive to produce plastic rubber products with increased content of a bio‐based component, preferably existing as industrial by‐product, for example, wood powder/sawdust. There are many studies on the making wood‐plastic composites, but hitherto very few consider vacuum forming processing technique, especially considering biofiller. Here, properties formed composite thermally modified powder (with reduced water uptake)...
Wood fibres were produced on the pilot scale refiner at BioComposites Centre, Bangor University, from a commercially sourced mix of chipped wood. The pressure 4, 6, 8 and 10 bar dried in associated flash drier. Surface energy characterization refined was performed using inverse gas chromatography (IGC). dispersive part total surface analysed for duplicates fibre samples four different pressures. Non-polar alkane probes used analysis coverage. Results indicate that processing has an effect...