Symbiose

Adhesives

Drawing inspiration from nature, Symbiose Biomaterials has developed water-based adhesives, either made of L-DOPA based polymers or natural proteins.

L-DOPA adhesive polymers

L-DOPA (or 3,4-dihydroxylphenylalanine) has found to be the active functionality of mussel’s proteins responsible for their strong adhesion to virtually any solid surfaces. Read more

Symbiose Biomaterials has transferred the adhesive properties of mussel’s proteins into bio-inspired synthetic (co)polymers via L-DOPA incorporation.

Playing on the copolymer formulation, water-based glues have been elaborated which can adhere and harden in wet environment. In the copolymer, L-DOPA insures both the adhesion onto a wide variety of substrates and the cohesion through crosslinking of its reduced (catechol) or its oxidized (quinone) form.

Natural proteins

Among marine organisms, different species produce adhesive proteins which have already been characterized and tested with success for their adhesives properties.

Symbiose Biomaterials is working on some of them, in particular proteins from mussels and tube-dwelling worms. Those proteins can be produced in bacteria and used as water-based glues.

Examples of developments

  • Adhesives for metallic substrates (steel, copper…)
  • Glass and polymer adhesion