Journal
MACROMOLECULAR MATERIALS AND ENGINEERING
Volume 298, Issue 6, Pages 612-623Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201200106
Keywords
adhesives; mechanical properties; miniemulsions; polymer architecture
Funding
- DiputacionForal de Gipuzkoa, Basque Government [GV IT373-10, S-PE10UN25]
- Ministerio de Ciencia e Innovacion (MICINN) [CTQ2011-25572]
- Basque Government
- EU Framework 6 Integrated Project NAPOLEON
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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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