Supramolecular Chemistry for Pressure Sensitive Adhesives ?

Xavier Callies (1) , Cécile Fonteneau (2) , Cyril Vechambre (3) , Sandrine Pensec (4) , Laurent Bouteiller (2) , Guylaine Ducouret (1) , Costantino Creton (1) , J.-M. Chenal (3) , Laurent Chazeau (3)

1 SIMM - Sciences et Ingénierie de la Matière Molle
2 IPCM - Institut Parisien de Chimie Moléculaire
3 MATEIS - Matériaux, ingénierie et science [Villeurbanne]
4 SU - Sorbonne Université

Pressure Sensitive Adhesives (PSA) are soft polymer materials which stick on almost any surface due to their particular rheological properties. Engineers adjust polymers molecular structure to optimize adhesion properties for each application. The nature of the monomers, molecular weight distribution and degree of crosslinking are classical tunable parameters for acrylic adhesives. The specificity of our project is to improve the adhesive properties of acrylic model polymers by incorporating bis-urea monomers. The presence of strong hydrogen bonds inside the polymeric matrix allows to dramatically increase the viscosity and dynamic modulus of short polymer chains (M<20 000g/mol) reducing the need for crosslinking while reducing dramatically the viscosity when dissolved in polar solvents. The molecular structure of our bis-urea functionalized polymers is inspired by the study on the toluene bis-urea functionalized polyisobutene (PIBUT) synthesized by L.Bouteiller team (Courtois et Al, Adv .Func. Mater. 2010). PIBUT is not only interesting by its supramolecular organization at room temperature but also by its surprising adhesive properties on low energy surface (silicone). Thus, our work on bis-urea functionalized acrylate polymers is also aimed at better understanding the PIBUT adhesion on silicone and at getting better adhesive properties on low energy surfaces.

Domaines: Polymères; Matériaux; Chimie

Xavier Callies, Cécile Fonteneau, Cyril Vechambre, Sandrine Pensec, Laurent Bouteiller, et al.. Supramolecular Chemistry for Pressure Sensitive Adhesives ?. The 2013 Annual Meeting of the Adhesion Society, Mar 2013, Daytona Beach, United States. ⟨hal-01576420⟩