@article{carrillo_nypeloe_rojas_2015, title={Cellulose nanofibrils for one-step stabilization of multiple emulsions (W/O/W) based on soybean oil}, volume={445}, ISSN={["1095-7103"]}, DOI={10.1016/j.jcis.2014.12.028}, abstractNote={Cellulose nanofibrils (CNF) were incorporated in water-in-oil (W/O) microemulsions and emulsions, as well as water-in-oil-in-water (W/O/W) multiple emulsions using soybean oil. The addition of CNF to the aqueous phase expanded the composition range to obtain W/O/W emulsions. CNF also increased the viscosity of the continuous phase and reduced the drop size both of which increased the stability and effective viscosity of the emulsions. The effects of oil type and polarity on the properties of the W/O/W emulsions were tested with limonene and octane, which compared to soybean oil produced a smaller emulsion drop size, and thus a higher emulsion viscosity. Overall, CNF are a feasible alternative to conventional polysaccharides as stability enhancers for normal and multiple emulsions that exhibit strong shear thinning behavior.}, journal={JOURNAL OF COLLOID AND INTERFACE SCIENCE}, author={Carrillo, Carlos A. and Nypeloe, Tiina E. and Rojas, Orlando J.}, year={2015}, month={May}, pages={166–173} }
 @article{nypeloe_carrillo_rojas_2015, title={Lignin supracolloids synthesized from (W/O) microemulsions: use in the interfacial stabilization of Pickering systems and organic carriers for silver metal}, volume={11}, ISSN={["1744-6848"]}, DOI={10.1039/c4sm02851a}, abstractNote={Taking advantage of the aromatic and cross-linking tendency of lignin macromolecules extracted from plants, we present a novel method for their assembly into supracolloidal structures. Specifically, spherical particles with controllable size (∼90 nm to 1 μm) were obtained from water-in-oil (W/O) microemulsions formulated with a mixture of nonionic surfactants and a colloidal dispersion of a low molecular weight alkali lignin. After spontaneous emulsification, the internal lignin-rich phase was cross-linked to produce the solid particles that could be easily separated by removal of the organic, continuous phase. The efficiency of the fractionated lignin particles to stabilize hexadecane-in-water Pickering emulsions was demonstrated and their properties were compared against those obtained by using traditional inorganic particles. The effect of the particle size of lignin on the emulsion structure is discussed. As a proof of concept we further introduce the use of related emulsions to enable in situ reduction of silver and loading of silver nanoparticles in lignin carriers.}, number={10}, journal={SOFT MATTER}, author={Nypeloe, Tiina E. and Carrillo, Carlos A. and Rojas, Orlando J.}, year={2015}, month={Mar}, pages={2046–2054} }
 @article{nypeloe_rodriguez-abreu_rivas_dickey_rojas_2014, title={Magneto-responsive hybrid materials based on cellulose nanocrystals}, volume={21}, ISSN={["1572-882X"]}, DOI={10.1007/s10570-014-0307-2}, number={4}, journal={CELLULOSE}, publisher={Springer Nature}, author={Nypeloe, Tiina and Rodriguez-Abreu, Carlos and Rivas, Jose and Dickey, Michael D. and Rojas, Orlando J.}, year={2014}, month={Aug}, pages={2557–2566} }
 @article{nypeloe_rodriguez-abreu_kolen'ko_rivas_rojas_2014, title={Microbeads and Hollow Microcapsules Obtained by Self-Assembly of Pickering Magneto-Responsive Cellulose Nanocrystals}, volume={6}, ISSN={["1944-8252"]}, DOI={10.1021/am504260u}, abstractNote={Cellulose microbeads can be used as immobilization supports. We report on the design and preparation of magneto-responsive cellulose microbeads and microcapsules by self-assembled shells of cellulose nanocrystals (CNC) carrying magnetic CoFe2O4 nanoparticles, that is, a mixture of isotropic and anisotropic nanomaterials. The magnetic CNCs formed a structured layer, a mesh, consisting of CNCs and magnetic particles bound together on the surface of distinct droplets of hexadecane and styrene dispersed in water. Because of the presence of CNCs the highly crystalline mesh was targeted to provide an improved barrier property of the microbead shell compared to neat polymer shells, while the magnetic particles provided the magnetic response. In situ polymerization of the styrene phase led to the formation of solid microbeads (∼8 μm diameter) consisting of polystyrene (PS) cores encapsulated in the magnetic CNC shells (shell-to-core mass ratio of 4:96). The obtained solid microbeads were ferromagnetic (saturation magnetization of ∼60 emu per gram of the magnetic phase). The magnetic functionality enables easy separation of substances immobilized on the beads. Such a functionality was tested in removal of a dye from water. The microbeads were further utilized to synthesize hollow microcapsules by solubilization of the PS core. The CNC-based, magneto-responsive solid microbeads and hollow microcapsules were characterized by electron microscopy (morphology), X-ray diffraction (phase composition), and magnetometry (magnetic properties). Such hybrid systems can be used in the design of materials and devices for application in colloidal stabilization, concentration, separation, and delivery, among others.}, number={19}, journal={ACS APPLIED MATERIALS & INTERFACES}, author={Nypeloe, Tiina and Rodriguez-Abreu, Carlos and Kolen'ko, Yury V. and Rivas, Jose and Rojas, Orlando J.}, year={2014}, month={Oct}, pages={16851–16858} }
 @misc{salas_nypeloe_rodriguez-abreu_carrillo_rojas_2014, title={Nanocellulose properties and applications in colloids and interfaces}, volume={19}, ISSN={["1879-0399"]}, DOI={10.1016/j.cocis.2014.10.003}, abstractNote={In this review we introduce recent advances in the development of cellulose nanomaterials and the construction of high order structures by applying some principles of colloid and interface science. These efforts take advantage of natural assemblies in the form of fibers that nature constructs by a biogenetic bottom-up process that results in hierarchical systems encompassing a wide range of characteristic sizes. Following the reverse process, a top-down deconstruction, cellulose materials can be cleaved from fiber cell walls. The resulting nanocelluloses, mainly cellulose nanofibrils (CNF) and cellulose nanocrystals (CNC, i.e., defect-free, rod-like crystalline residues after acid hydrolysis of fibers), have been the subject of recent interest. This originates from the appealing intrinsic properties of nanocelluloses: nanoscale dimensions, high surface area, morphology, low density, chirality and thermo-mechanical performance. Directing their assembly into multiphase structures is a quest that can yield useful outcomes in many revolutionary applications. As such, we discuss the use of non-specific forces to create thin films of nanocellulose at the air–solid interface for applications in nano-coatings, sensors, etc. Assemblies at the liquid–liquid and air–liquid interfaces will be highlighted as means to produce Pickering emulsions, foams and aerogels. Finally, the prospects of a wide range of hybrid materials and other systems that can be manufactured via self and directed assembly will be introduced in light of the unique properties of nanocelluloses.}, number={5}, journal={CURRENT OPINION IN COLLOID & INTERFACE SCIENCE}, author={Salas, Carlos and Nypeloe, Tiina and Rodriguez-Abreu, Carlos and Carrillo, Carlos and Rojas, Orlando J.}, year={2014}, month={Oct}, pages={383–396} }
 @article{nypelo_rojas, title={Functionalizing cellulose fibers by mineral and ceramic nanoparticle deposition}, volume={91}, number={6}, journal={American Ceramic Society Bulletin}, author={Nypelo, T. and Rojas, O. J.}, pages={28–31} }