Afbeelding
Composites are complex materials composed of fibres in a plastic matrix. This plastic matrix can vary in material use, with both thermoplastics and thermosets being suitable. Adding fibres to the plastic has a positive impact on mechanical properties by increasing tensile and compressive strength. The material type is essential in various sectors, including recreation (e.g. boat building), aviation (e.g. aircraft construction), automotive and renewable energy (e.g. wind turbines). Other reasons for this choice include weight saving, corrosion resistance, longevity and design freedom. Currently, the global composites market is growing by 4-5% annually, with the market value of Dutch composites accounting for 7% of the total European market value. This is particularly true for composites based on thermoplastics, which is in line with Dutch expertise in this field. Moreover, the circularity of raw materials is becoming increasingly important. To achieve this, parts can on the one hand be manufactured in a recyclable way, but on the other hand bio-based materials can also be processed. Biocomposite materials can be easily recycled or disposed of without harming the environment, which is not yet possible for the majority of synthetic composites.
Reason
Preferably, these biobased alternatives are obtained from biological and low-grade waste streams. Lignin, for example, is a by-product from the paper industry that is usually burned for energy generation. This material has a significant production volume and could be an alternative to synthetic matrices in composites. Abundant biobased fibre alternatives are available, such as cellulose fibres derived from various waste sources, such as wastewater.
What problem does the project solve?
Develop chemical modification techniques to make lignin suitable as a matrix for biocomposites.
Who is the project team?
NHL Stenden University of Applied Sciences
Recell
LosánNL
How is the project team tackling this?
The following milestones have been defined:
- Optimisation of the chemical modification of lignin.
- Completion of the property tests and selection of the most optimal starting material and modification method.
- Production of a demonstration piece.
