Soft highly swelling fibres by alkali-activated chemical modification
To make cellulose fibres more flexible and malleable, components inside the fibre must be properly modified, that is, the lignin, hemicellulose or cellulose needs to be at least partly transformed into a proper derivative. Several cellulose derivatives are today produced through chemical reactions that involves formation of ether bonds. To reach sufficient efficiency, these reactions […]
Characterization of paperboard for creasing and folding
To form a package with desired properties, paperboard is creased and folded. Creasing creates delamination cracks which during folding cause the plies to buckle and form a permanent corner. The delamination cracks facilitate folding but reduce the load-bearing capacity of the packaging. The processes must therefore be controlled. The result is affected both by the […]
Development of thermoplastic lignocellulose based materials
The aim of this project is to develop and increase the knowledge of thermoplastic materials from bleached pulp through minimal chemical modification.
Real time 4D X-ray microtomography Imaging and analysis of water transport mechanisms in sustainable paper straws
At present, there are no quantitative experimental studies for liquid transport with relevant spatial and temporal resolution in cellulose fiber networks. This project aims to improve the understanding of the dynamic interplay between water transport processes and the cellulose fiber network. In this way, the proportion of sorption of water in pores and cell walls […]
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.
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, […]
Processability of modified fibres for complex shaped parts
There is a drive towards the use of single-component materials in different applications, for example in opening and closure of packaging products and in single use plastics (SUP). This opens up the possible use of cellulose-based products, but increases the demand for new modification strategies for fibres. Modifications aiming at improving their processability and final […]
Towards zero defects in packaging materials
Modern produktutveckling är till allt större del virtuell vilket innebär att datormodeller används för att förutspå en förpacknings beteende innan den existerar fysiskt. Fördelen med att använda datormodeller är att produktutvecklarna kan pröva nya ideer och koncept virtuellt utan att tillverka dyra fysiska verktyg samt att ledtiden från ide till produkt kan kortas avsevärt. Vidare […]
Scale-up of sustainable production of dialdehyde cellulose and dialcohol cellulose
The project is a collaboration between Chalmers, KTH, BillerudKorsnäs and TetraPak. The aim of the project is to develop a closed or semi-closed techno-economical feasible process for production of Dialdehyde cellulose, DAC and its derivatives with a target to replace plastic materials in different applications such as thermoforming, extrusion and moulding. The project will have […]
4D characterisation of paperboard mechanics
The project involves the development of new experimental methods to characterize deformation processes in fiber-based materials, in particular paperboard. The experiments are to be performed on several scales, from micro to macro, and aim to increase understanding of the mechanisms that control the mechanical properties and behaviour of the material. Experimental devices that can be […]
Constitutive modeling for macro-micro delamination for paperboard/Tow ards zero defects in packaging technology
The project aims to develop experimental methods for characterizing packaging materials. In the project, the microstructure of packaging materials w ill be methodically characterized and linked to mechanical properties. Traditionally, mechanical testing of paperboard material has been carried out without regard to micro-level mechanisms. With new experimental methods such as in situ x-ray tomography, much […]
Design av fuktokänsliga biobaserade syrgasbarriärer genom att systemtiskt korrelera biopolymernas molekylstrukturna till barriärfunktionen
The total Swedish export income from packaging and forest-based products is more than 11%. Our forest is a renewable resource that can be used to produce and develop more sustainable packaging materials with decreased climate stress compared to today’s fossil ones or aluminum foil. But, the replacement of fossil based materials with bio-based counterparts is […]
