@article{assis_suarez_prestemon_stonebraker_carrillo_dasmohapatra_jameel_gonzalez_2021, title={Risk Analysis, Practice, and Considerations in Capital Budgeting: Evidence from the Field for the Bio-based Industry}, volume={16}, ISSN={["1930-2126"]}, url={http://dx.doi.org/10.15376/biores.16.1.19-45}, DOI={10.15376/biores.16.1.19-45}, abstractNote={This study aims to examine how organizations in the bio-based industry perceive risks and perform risk analysis within the capital investment decision-making process. More specifically, this study aims to assess sources of uncertainty commonly considered, identify tools and methods used for risk assessment, and understand how risk analysis is considered in capital budgeting. Eighty-six respondents were electronically surveyed on practices for capital investment risk analysis, including C-suite and upper management from different organization sizes and segments in the bio-based industry. It was found that some forms of risk analysis are utilized either in project assessment and/or for decision making by most respondents; however, qualitative and deterministic assessment practices dominate over probabilistic methods. In addition, risk assessment is most commonly performed in the later stages of a project, with less than 50% of adoption at the earlier stages. Overall, the main sources of uncertainties considered when performing risk assessment are financial, market and sales, and technology, with competition being considered mostly by upper management levels. Additionally, consistent with previous studies in other industry sectors, Internal Rate of Return, Return on Investment, and Net Present Value are the preferred financial indicators used to evaluate capital investments.}, number={1}, journal={BIORESOURCES}, publisher={BioResources}, author={Assis, Camilla Abbati and Suarez, Antonio and Prestemon, Jeffrey P. and Stonebraker, Jeffrey and Carrillo, Carlos and Dasmohapatra, Sudipta and Jameel, Hasan and Gonzalez, Ronalds}, year={2021}, month={Feb}, pages={19–45} }
 @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{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{carrillo_laine_rojas_2014, title={Microemulsion Systems for Fiber Deconstruction into Cellulose Nanofibrils}, volume={6}, ISSN={["1944-8252"]}, DOI={10.1021/am5067332}, abstractNote={A new method to produce cellulose nanofibrils (CNF) is proposed to reduce the energy demand during deconstruction of precursor fibers suspended in aqueous media. Microemulsions were formulated with aqueous solutions of urea or ethylenediamine and applied to disrupt interfibril hydrogen bonding. Compared to typical fibrillation of lignin-containing and lignin-free fibers, pretreatment with microemulsion systems allowed energy savings during microfluidization of 55 and 32%, respectively. Moreover, microemulsion processing facilitated smaller-scale CNF structures (higher degrees of deconstruction), with higher water retention value (WRV) and surface area. Urea-containing microemulsions were found to be most effective in reducing energy consumption and in weakening the cellulosic matrix. Films prepared from CNF processed after pretreatment with urea-containing microemulsions presented a more uniform fiber network and produced films with smoother surfaces compared to those based on ethylenediamine. The lignin-containing CNF (LCNF) produced denser films than those obtained from lignin-free CNF. The mechanical properties of films obtained after application of microemulsion pretreatment were compared, and the benefits of the proposed approach were further confirmed. Overall, fiber deconstruction after microemulsion treatment is a step toward energy-efficient production of nanocellulose.}, number={24}, journal={ACS APPLIED MATERIALS & INTERFACES}, author={Carrillo, Carlos A. and Laine, Janne and Rojas, Orlando J.}, year={2014}, month={Dec}, pages={22622–22627} }
 @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{carrillo_saloni_rojas_2013, title={Evaluation of O/W microemulsions to penetrate the capillary structure of woody biomass: interplay between composition and formulation in green processing}, volume={15}, ISSN={1463-9262 1463-9270}, url={http://dx.doi.org/10.1039/C3GC41325J}, DOI={10.1039/c3gc41325j}, abstractNote={The ability of microemulsions to overcome the complex capillary structure of wood is revealed in relation to its composition and formulation. The oil phase (limonene in this study) of O/W microemulsions is found to be critical for effective flooding. The type of amphiphile molecule used, including sodium lignosulfonate and alkyl polyglucosides as well as reference sodium dodecylsulfate and silicone-based surfactants, together with the viscosity of the resulting microemulsions were the main factors determining the dynamics and extent of fluid penetration. The associated observations were ascribed to the balance of the affinities of the surfactants for the substrate and its conductive elements. Owing to the inherent morphological and chemical features, large differences were observed as far as impregnation susceptibility of different wood types is concerned. By using appropriate surfactant mixtures it was possible for the microemulsions to penetrate the most recalcitrant woody biomass studied, with efficiencies up to 83% higher than that of water, at atmospheric pressure and room temperature. Application of microemulsions is a new alternative for green and efficient pre-treatment of woody biomass in biorefineries, to deliver (bio)chemical functions to the constrained spaces of the cell wall and to increase its accessibility.}, number={12}, journal={Green Chemistry}, publisher={Royal Society of Chemistry (RSC)}, author={Carrillo, Carlos A. and Saloni, Daniel and Rojas, Orlando J.}, year={2013}, pages={3377} }
 @article{carrillo_saloni_lucia_hubbe_rojas_2012, title={Capillary flooding of wood with microemulsions from Winsor I systems}, volume={381}, ISSN={["0021-9797"]}, DOI={10.1016/j.jcis.2012.05.032}, abstractNote={A new approach based on microemulsions formulated with at least 85% water and minority components consisting of oil (limonene) and surfactant (anionic and nonionic) is demonstrated for the first time to be effective for flooding wood's complex capillary structure. The formulation of the microemulsion was based on phase behavior scans of Surfactant-Oil-Water systems (SOWs) and the construction of pseudo-ternary diagrams to localize thermodynamically stable one-phase emulsion systems with different composition, salinity and water-to-oil ratios. Wicking and fluid penetration isotherms followed different kinetic regimes and indicated enhanced performance relative to that of the base fluids (water, oil or surfactant solutions). The key properties of microemulsions to effectively penetrate the solid structure are discussed; microemulsion formulation and resultant viscosity are found to have a determining effect in the extent of fluid uptake. The solubilization of cell wall components is observed after microemulsion impregnation. Thus, the microemulsion can be tuned not only to effectively penetrate the void spaces but also to solubilize hydrophobic and hydrophilic components. The concept proposed in this research is expected to open opportunities in fluid sorption in fiber systems for biomass pretreatment, and delivery of hydrophilic or lipophilic moieties in porous, lignocellulosics.}, journal={JOURNAL OF COLLOID AND INTERFACE SCIENCE}, author={Carrillo, Carlos A. and Saloni, Daniel and Lucia, Lucian A. and Hubbe, Martin A. and Rojas, Orlando J.}, year={2012}, month={Sep}, pages={171–179} }