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High-Shear-Strength Waterborne Polyurethane/Acrylic Soft Adhesives

Abstract : Urethane/acrylic hybrid latex particles are prepared by miniemulsion polymerization for an application as soft adhesives. The polymerization of the acrylic monomers and grafting of an isocyanate functionalized PU on a hydroxyl functionalized monomer (HEMA) take place simultaneously, resulting in a complex PU/acrylic network while avoiding any macroscopic phase separation. Its structure can be tuned by changing the extent of grafting and a specific model is applied to analyze the final polymer microstructure. The resulting materials have a low level of adhesion but display an exceptionally high resistance to shear. Two parameters are varied: the fraction of HEMA in the monomer composition and the diol concentration.
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Submitted on : Monday, June 12, 2017 - 4:15:37 PM
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Elise Degrandi-Contraires, Aitziber Lopez, Yuri Reyes, Jose M Asua, Costantino Creton. High-Shear-Strength Waterborne Polyurethane/Acrylic Soft Adhesives. Macromolecular Materials and Engineering, Wiley-VCH Verlag, 2013, 298 (6), pp.612 - 623. ⟨10.1002/mame.201200106⟩. ⟨hal-01537572⟩



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