FibreFuse – Biobaserade kolfiber: Hur undviks att biobaserade kolfibrer fastnar i varandra under tillverkningen?
Att använda kolfibrer som armering i kompositer ger ett lättviktsmaterial som kan ersätta stål, aluminium eller glasfiber i många konstruktioner, t.ex. i fordonsindustrin eller till turbinbladen i vindkraftverk. Dessvärre är dagens kommersiella kolfibrer för dyra för många tillämpningar och även tillverkade av fossilbaserade polymerer. Lignin har länge ansetts vara en speciellt attraktiv kandidat som råmaterial […]
HEALIX
This project is about development of novel wound dressing materials and we are making cellulose nanofiber hydrogels from wood as raw material.
Ex situ and in situ advanced electron microscopy of enzymatic action for biomass tailoring and transport paths in conducting fibres and yarns
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 […]
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.
Polysaccharide Monooxygenases (LPMOs) for Advanced Nanocellulose Materials
LPMOs (lytic polysaccharide monooxygenases) are oxidative enzymes that enhance cellulose fibrillation by introducing charged carboxyl groups onto the cellulose surfaces in aqueous reaction conditions. The use of LPMOs in production of nanocelluloses could reduce the need of hazardous chemicals and facilitate more environmentally friendly processes. The aim of this subproject is to produce recombinant LPMOs […]
Hållbara isoleringsmaterial för efterisolering av byggnader
Projektets huvudsakliga syfte är att utveckla teknik som kan bidra till att förbättra energieffektiviteten i de stora hyreshus som byggdes på 1960- och 1970-talet och bidra till att uppnå detta på ett hållbart sätt. Ambitionen är att utveckla ett isoleringsmaterial som är 100% biobaserat och återvinningsbart via kartongåtervinningen och därmed bidra till omställningen till en […]
Assessment of the homogeneity of chemical modifications aimed for thermoplasticisation of cellulosic fibres
The strong driving force behind the sustainable biomaterial-based society is to replace the fossil fuel-based materials with renewable resources to for example address the climate change. Thermoplastic polymer products are used on a daily bases in every household and they need to possess the properties such as being ductile and formable. However, cellulosic materials do […]
Bio-based binders for molded cellulose fibers
Natural binders are inexpensive, biodegradable, environmentally friendly and renewable, but usually form weaker bonds and slightly harder to apply. The objective of the project is to develop and optimize the process of using various plant polysaccharides as binder for holocellulose fibers and cellulose nanofibrils (CNF). The selected polysaccharides are further functionalized to improve interfacial adhesion […]
A new sustainable route to polysaccharide hydrogel formation for medical and cosmetic applications
Hydrogels are an extremely versatile class of material, and have found relevance in cosmetic, medical, pharmaceutical, and industrial processes. A hydrogel has a low solid content, often comprising at least 90% water. Although hydrogels are increasingly used in cosmetics and drug manufacture, the production process is far from sustainable, relying on fossil-based polymers and chemical […]
Cross-linked protein-carbohydrate hydrogels
Using newly discovered carbohydrate-binding proteins, we are developing a novel method for hydrogel formation via biopolymer cross-linking.
Self-assembly of 2D nanoflakes by using 1D cellulose nanofibrils
The earth-abundant 1D cellulose nanofibrils (CNFs) have shown the capacity to assemble different functional nanoparticles into 2D films and 3D foams. 2D nanomaterials such as MXene, graphene, transitional metal dichalcogenides (MoS2, WS2, etc.) are the ones of most promising functional materials in optical, electronic, and magnetic fields. We are using the 1D CNF to align […]
Smuts, olje- och vattenavvisande träytor
Detta är ett Formasfinansierat projekt 2018-2022 som har en doktorand vid KTH i samarbete med RISE och nu med Karlstads universitet. Doktoranden Haiyan Yin licade i november 2020 och fortsätter till doktor. Hon har publicerat två arbeten hittills, ett i Materials and Design och ett i Holzforschung.
