VTT is developing bio-based adhesives:
- Adhesive formulations based on lignin for e.g. replacement of phenol in thermoset resins,
- Polysaccharide glues e.g. starch based glues for paper applications and
- hot-melts based on grafted celluloses.
A new generation of bio-materials is emerging. Bio-based glues improve the carbon foot print of the materials, and at the same time are more safe and easy to use in wood, paper and bio-composite materials.
Adhesives are extensively used for example in packaging, construction and textiles.
VTT has developed formulations and IP on price-competitive adhesives based on natural and renewable raw materials with a proven performance for paper, wood and plastics. Examples of bio-based adhesives developed at VTT include:
- formaldehyde-free thermoset resin based on a non-toxic cross-linker, starch and lignin/tannin with proven wet-strength properties
- hot-melt adhesives with a wide range of viscosities for fibre-based packaging material based on modified starch, modified xylan or cellulose acetate
- water-based adhesives with a high dry content based on modified starch.
VTT is currently further exploring the possibilities of utilizing lignin as a component in adhesives as well as bio-based pressure sensitive adhesives for labels.
VTT has considerable knowledge in the modification and adhesive formulation of bio-based polymers (lignin, starch, cellulose, xylan). In addition to modern laboratory facilities for early development work of bio-based adhesives and state of the art analytics, VTT also hosts pilots for up-scaling.
VTT is currently involved in both client projects and publicly funded research projects.
Adhesives manufacturer, chemical industry and companies interested in valorisation of sidestreams/waste please contact us for more information on bio-based adhesives solutions.
VTT’s adhesive portfolio range from hotmelts to thermoset resins, which enables a wide span of application areas i.e. gluing of packaging materials (including food packaging), glueing of wood based products, glueing of bio plastic films etc.