All wood composites
Lightweight structural composites are a great way to reduce overall weight. Bio-based composites are used to replace fossil-based materials in non-structural applications. This project will develop new lightweight structural materials that are comprised of bio-based constituents. One of the most important aspects to understand when developing new composites is the interface functionalization chemistry and its impact on rheological […]
Develop contact-active antibacterial approaches on bio-based materials using LbL technique and their antibacterial mechanisms
Layer-by-layer coating technique has been shown their considerable advantages including fast and mild process, flexibility and easy to scale up comes to the surface functionalizations. One of the most pronounced functionalities is the antimicrobial approach. We are aiming at developing non-complicated methods for antibacterial properties on different substrates mainly cellulose-based materials using alternative cationic polyelectrolytes, […]
Polysaccharide films – formation and properties
Turning wood-based polymers and particles into films is vital for majority of their utilization (packaging, support materials) and for fundamental analytics (model surfaces for adsorption, interaction studies, strength characterization). Cellulose, hemicelluloses and lignins have distinct (from one another) intrinsic film formation behavior and properties that span from solubility, molecular weight and flexibility, and polarity. Main […]
Novel Lignin Based Thermoset Resins
The project focuses on synthetic pathways to modify lignin to introduce chemical groups suitable for cross-linking reactions and elaboration on the mechanical properties of the formed materials. The main focus is allylation, introducing an allyl ether functionallity selectively on phenols, and thiol-ene reactions for cross-linking of the thermoset resin. This is performed on technical lignin […]
Advanced rheological characterization of cellulose based systems
Processing, e.g. extrusion, injection molding, typically involves rheologically complex materials in complex flow configurations. The deformation history therein experienced by materials is generally characterized by a series of shear, extensional, or a combination of the two deformations, at high isotopic pressures and temperatures. Therefore, a fundamental understanding of the material response in simple shear and […]
Development of a new rheometer system at MAX IV
Rheometry explores the relationship between forces and motion through (continuum) constitutive relations and suitably defined material functionsi. Rheometry is important for soft matter from two main reasonsii: (i) to investigate correlations between molecular structure and material behavior and (ii) to attempt the prediction of flow behavior in complex situations using material parameters determined in simple, […]
Simulation and modelling of wood-based advanced functional materials
In this project we perform multi-scale theoretical modelling of wood-based materials and devices ranging from the Molecular Dynamics and ab initio simulations on the atomistic level to the drift-diffusion device simulation on the system level to answer the fundamental questions concerning material structure, morphology, polymerization, porosity, ion diffusion, role of water, solvents and many others, […]
Impact of compaction parameters on the mechanical properties of highly extensible paper
The possibility of producing three-dimensional advanced paper structures create the conditions for replacing plastic-based solutions or plastic details in packaging with multi-material and contributes in an essential way to strategies for a sustainable social development . Within this context, the project deals with the challenge of producing highly stretchable paper for 3D forming applications through in-plane […]
Nanocellulose-polysaccharide hydrogels
In this project we investigate the impact of nanocelluloses (CNC and CNF) on the structure and mechanical properties of polysaccharide hydrogels such as pectin and hemicelluloses for food and pharma applications.
The use of bio-polymers in micro fluidic devices for biomedical applications
By combining the knowledge in the field of surface modification with bio-polymers such as cellulose with the knowledge in microfluidic devices for biomedical applications. We foresee a huge potential in creating new useful devices for future increased health. During the recent decade cellulose in the form of different types of nano cellulose have attracted a […]
From molecular interactions to macroscopic properties
The objective of this research project is to develop a deeper understanding on how chemicals can influence the dry strength of biocomposites, in our case board and tissue. The following parameters will be considered: -Influence of chemistry (mainly polyelectrolytes, PE) on bond and network strength -Influence of PE configuration and loading (charge) on bond and […]
Sustainable materials chemistry SU/Sipponen
My group at Stockholm University will be developing new materials from renewable resources such as lignin and other components of plant biomass. A central focus area will be the utilisation of green chemistry principles en route to functional materials for energy and environmental applications. We will be seeking close collaboration with the industry and the […]
