Controlling Polymer Architecture and Particle Morphology of Alkyd/Acrylic Waterborne Nanocomposite Coatings

GOIKOETXEA, MONIKA; MINARI, ROQUE J; BERISTAIN, ITXASO; MANEA, MIHAELA; PAULIS, MARÍA; BARANDIARAN, MARÍA J.; DE LAS HERAS ALARCÓN, CAROLINA; FAUCHEU, JENNI; GAUTHIER, CATHERINE; CHAZEAU, LAURENT; KEDDIE, JOSEPH L; ASUA, JOSÉ M.

Nuremberg, Alemania

Congreso; 5th European Coating Congress 2009; 2009

Alkyd/acrylic waterborne hybrid systems are expected to combine the positive properties of alkyd resin (e.g. autoxidative curing, high gloss and penetration in wood) with the fast drying and color retention of acrylic latexes. The properties of the coating depend on the polymer architecture and film morphology, which in turn depend on the morphology of the composite latex particles. It is believed that the intimate contact between the alkyd resin and the acrylic polymer will maximize the synergetic effect. In this work, alkyd/acrylic waterborne coatings have been produced by miniemulsion polymerization. The challenges in the production of fine-tuned nanocomposite dispersions are discussed, with special emphasis on the key synthetic points that allow controlling polymer architecture and particle morphology. The effect of the characteristics of the composite nanoparticles on film formation and film characteristics are presented.