Waterborne Acrylic/casein Latexes and Their Application as Ecofriendly Coating

PICCHIO, M. L.; PASSEGGI, M.C.G.; BARANDIARAN, M:J:; MINARI, R. J.; GUGLIOTTA, L.M.

Cancún

Simposio; XV Simposio Latinoamericano de Polímeros / XIII Congreso Iberoamericano de Polímeros, SLAP 2016; 2016

Sociedad Polimérica de México

Acrylic/casein hybrid latexes have gained increasingly industrial interest in recent years because of their promising properties as binders for coatings.1 Since the highly hydrophilic character of casein, hybrid films present some shortcoming such as poor water resistance which limits their further application.2 It is expected that increasing compatibility between polymer and protein phases, by covalently bonding both components, will result in superior properties of the hybrid films. In this regard, the chemical modification of casein appears as a promising route to favor the grafting of acrylic polymers and overcome the weak characteristic of the hybrid materials. The aim of this work is to evaluate the incorporation of vinyl groups onto casein, and to analyze the effect of the number of functionalities on the polymer/protein compatibility and the coating properties of the materials.