For the first time, a research team has developed waterborne non-isocyanate polyurethane (WNIPU) latexes stabilised exclusively by cellulose nanocrystals (CNCs) and partially derived from renewable resources. A polyaddition reaction between siloxane diamine and 1,6-hexanediol bis(cyclic carbonate) occurred within monomer-in-water Pickering emulsion droplets, which were effectively stabilised with CNCs. Fluorescent latex particles for functional coatingsCNCs acted as nanoparticle surfactants at the surface of the WNIPU latex particles, as confirmed by rhodamine B-labelled CNCs and confocal laser scanning microscopy. Spherical latex particles with a median size of 10 μm were obtained. Source: Polymer Chemistry, Issue 29, 2025Category: Raw materialsMatching product (German): PolyurethaneMatching product (English): EC Tech Report Bio-based Coatings