Orlando J. Rojas

I conduct multidisciplinary research involving biobased materials at different size scales, mainly those displaying large interfacial areas such as fibers (micro/nano fibers), fiber networks, particles and colloidal systems. Some examples of materials of interest include nano/microfibrillar cellulose, cellulose nanocrystals, lignin particles and biopolymer assemblies, thin films, cellulose derivatives, enzymes and lignocellulose-based dispersions, emulsions, foams, gels, aerogels... We study the adsorption behaviors of surfactants and biopolymers at interphases and at the solid/liquid and liquid/air interfaces using techniques such as piezoelectric and surface plasmon sensing, XPS and other spectroscopic techniques, imaging, light scattering, etc.