A5040249101- Advanced Cellulose Research Studies
- Lignin and Wood Chemistry
- Electrospun Nanofibers in Biomedical Applications
- Nanocomposite Films for Food Packaging
- Material Properties and Processing
- Biofuel production and bioconversion
- Surfactants and Colloidal Systems
- Proteins in Food Systems
- Enhanced Oil Recovery Techniques
- Pickering emulsions and particle stabilization
- Enzyme-mediated dye degradation
- Surface Modification and Superhydrophobicity
- Polysaccharides and Plant Cell Walls
- Petroleum Processing and Analysis
- Polymer Surface Interaction Studies
- Phase Equilibria and Thermodynamics
- Food Chemistry and Fat Analysis
- Conducting polymers and applications
- Soybean genetics and cultivation
- Fermentation and Sensory Analysis
- Recycling and Waste Management Techniques
- Green IT and Sustainability
- Electronic Packaging and Soldering Technologies
- Advanced Sensor and Energy Harvesting Materials
- Silk-based biomaterials and applications
North Carolina State University
2011-2021
North Central State College
2021
University of the Andes
2014
Brigham Young University - Idaho
2013
Universidad de Los Andes
2008
Universidad de Los Andes
2007
Cellulose nanofi brils (CNF), also known as brillar cellulose (NFC), are an advanced biomaterial made mainly from renewable forest and agricultural resources that have demonstrated exceptional performance in composites. In addition, they been utilized barrier coatings, food, transparent fl exible fi lms other applications. Research on CNF has rapidly over the last decade several of fundamental questions about production characterization addressed. An interesting shift focus recent reported...
Lignins are used often in formulations involving proteins but little is known about the surface interactions between these important biomacromolecules. In this work, we investigate at solid–liquid interface of lignin with two main soy, glycinin (11S) and β-conglycinin (7S). The extent adsorption 11S 7S onto films degree hydration interfacial layers quantified via Quartz crystal microgravimetry (QCM) plasmon resonance (SPR). Solution ionic strength protein denaturation (2-mercaptoethanol...
Understanding enzyme-substrate interactions is critical in designing strategies for bioconversion of lignocellulosic biomass. In this study we monitored molecular events, situ and real time, including the adsorption desorption cellulolytic enzymes on lignins cellulose, by using quartz crystal microgravimetry surface plasmon resonance. The effect a nonionic active molecule was also elucidated. Three lignin substrates relevant to sugar platform biorefinery efforts were considered, namely,...
Modification of the wetting behavior hydrophobic surfaces is essential in a variety materials, including textiles and membranes that require control fluid interactions, adhesion, transport processes, sensing, etc. This investigation examines enhancement wettability an important class textile viz., polypropylene (PP) fibers, by surface adsorption different proteins from soybeans, soy flour, isolate,glycinin, β-conglycinin. Detailed investigations aqueous solution (pH 7.4, 25 °C) on thin films...
Commercial wood adhesives are based on products that contain formaldehyde; however, environmental and health concerns about formaldehyde emissions from have influenced research development efforts in order to find alternative, formaldehyde-free for adhesives. In this work, different soy protein-based proposed, their performance is compared commercial urea (UF) adhesive. Soy were prepared using either protein isolate (SPI) or flour (SF) with coadjutant polymers: polyethylene oxide (PEO),...
Soybean proteins have found uses in different nonfood applications due to their interesting properties. We report on the kinetics and extent of adsorption silica cellulose surfaces glycinin β-conglycinin, main present soy. Quartz crystal microgravimetry (QCM) experiments indicate that soy protein is strongly affected by changes physicochemical environment. The affinity mass adsorbed increases (by ca. 13 89%, respectively) with solution ionic strength (as it from 0 100 mM NaCl) screening...
Deposition of hydrophobic wood extractives and representative model compounds, on the surface cellulose prior to enzymatic hydrolysis was found either enhance or inhibit action cellulase enzymes. The effect these compounds correlated with their chemical structure, which may in part explain differential effects observed between softwood hardwood extractives. Specifically, addition sterol, enhanced microcrystalline by 54%, whereas a triglyceride could 49%. different extractives' be explained...
IC pad damage from a wafer probe can be detrimental to wire-bond yield and product reliability. In this paper, bond pads are harshly probed on traditional variety of experimental circuit-under-pad (CUP) structures in technologies having aluminum (Al) metallization silicon dioxide (SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) dielectric films. Probe marks cracking behavior analyzed, seeking process margins for high-reliability...
This study investigates the effect of alcohols on solution and adsorption properties symmetric triblock nonionic copolymers comprising blocks ethylene oxide (EO) propylene (PO) (EO(37)PO(56)EO(37)). The cloud point, surface tension, critical micelle concentration (CMC), maximum packing at air-water interface are determined, latter is compared to amount polymer that adsorbs from onto polypropylene (PP) cellulose surfaces. interaction energy radius micelles calculated by using molecular...
Understanding the aggregation behavior of lignins is relevant to their application, especially toward value-added products.Here we report on selfassociation kraft lignin derived from hardwood and softwood species under mild temperature pH conditions in presence various salts surfactants.Besides characterization functional groups (NMR others), (extent rate) (turbidity, viscosity), surface tension, particle size (dynamic light scattering) filtration efficiency were determined.Monovalent salt...