Low oil concentration, stable emulsions were achieved by combining two types of nanocelluloses, an environmentally-sound route towards multiscale materials based on sustainable resources.

Oil-in-water Pickering emulsions were successfully prepared via high-energy microfluidization using cellulose nanocrystals (CNC) as interfacial stabilizers. The influence of pressure, CNC concentration, and oil type on droplet size emulsion stability was determined. Under optimized homogenization conditions, formed stabilized based corn, fish, sunflower, flax, orange, MCT oils. decreased with increasing pressure from 9 to 17 kpsi, but then increased slightly at 19 kpsi. creaming the which...

The surface chemistry and adsorption behavior of submicrometer cellulosic lignin particles have drawn wide-ranging interest in the scientific community. Here, we introduce their assembly at fluid/fluid interfaces Pickering systems discuss role reducing oil/water interfacial tension, limiting flocculation coalescence, endowing given functional properties. We stabilization multiphase by colloids opportunities for adoption. They can be used alone, as dual components, or combination with...

Highly charged (zeta potential ζ = +105 mV, acetate counterions) chitin nanoparticles (NCh) of three different average aspect ratios (∼5, 25, and >60) were obtained by low-energy deconstruction partially deacetylated chitin. The effective in reducing the interfacial tension stabilized oil/water interface via network formation (interfacial dilatational rheology data) becoming stabilizing Pickering systems, depending on NCh size, composition, formulation variables. improved wettability...

We report on high-internal-phase, oil-in-water Pickering emulsions that are stable against coalescence during storage. Viscous, edible oil (sunflower) was emulsified by combining naturally derived cellulose nanocrystals (CNCs) and a food-grade, biobased cationic surfactant obtained from lauric acid L-arginine (ethyl lauroyl arginate, LAE). The interactions between CNC LAE were elucidated isothermal titration calorimetry (ITC) supplementary techniques. adsorption surfaces its effect...

Bio-based engineered nanomaterials are being explored for their utilization within foods to improve quality and enhance functionality. In this study, we investigated the impact of a naturally-derived particle stabilizer, cellulose nanocrystals (CNC), on gastrointestinal fate digestion corn oil-in-water Pickering emulsions. A static 3-stage tract (GIT) model was used simulate mouth, stomach small intestine. The CNC-coated lipid droplets monitored by measuring release free fatty acids (FFAs)...

Nanocellulose has been demonstrated as a suitable material for cell culturing, given its similarity to extracellular matrices. Taking advantage of the shear thinning behavior, nanocellulose suits three-dimensional (3D) printing into scaffolds that support attachment and proliferation. Here, we propose aqueous suspensions acetylated low degree substitution direct ink writing (DIW). This benefits from heterogeneous acetylation precursor cellulosic fibers, which eases their deconstruction...

Abstract Direct ink writing (DIW) provides programmable and customizable platforms to engineer hierarchically organized constructs. However, one‐step, facile synthesis of such architectures via DIW has been challenging. This study introduces inks based on two‐phase emulgels for direct printing in situ formation protecting layers enveloping multicomponent cores, mimicking skin‐bearing biological systems. The emulgel consists a Pickering emulsion with an organic, internal phase containing...

Cellulose nanopaper is a strong lightweight material made from renewable resources with wide range of potential applications, membranes to electronic displays. Most studies on target high mechanical strength, which compromises ductility and toughness. Herein, we demonstrate the fabrication highly ductile tough cellulose via fibrillation hemicellulose-rich wood fibers dispersion obtained nanofibrils (CNFs) in an ionic liquid (IL)–water mixture. This treatment allows hemicellulose swelling,...

Topological variety of robust networks from nanofibrils enables the formation strong and tough particle constructs ubiquitously.

We study the generation and decay of aqueous foams stabilized by sodium dodecyl sulfate (SDS) in presence unmodified cellulose nanofibrils (CNF). Together with rheology suspensions containing CNF SDS, interfacial/colloidal interactions are determined quartz crystal microgravimetry dissipation monitoring, surface plasmon resonance, isothermal titration calorimetry. The results used to explain properties air/water interface (interfacial activity dilatational moduli from oscillating air...

The complex nature of typical colloids and corresponding interparticle interactions pose a challenge in understanding their self-assembly. This specifically applies to biological nanoparticles, such as those obtained from chitin, which typically are hierarchical multidimensional. In this study, we obtain chitin nanocrystals by one-step heterogeneous acid hydrolysis never-dried crab residues. Partial deacetylation facilitates control over the balance electrostatic charges (ζ-potential range...

A temperature-insensitive fiber bending sensor is demonstrated by using a special optical with cladding-mode resonance. The pure silica core and fluorine-doped inner cladding shows strong single-mode (SMF)-special fiber-SMF proposed as head to monitor the response of resonant spectrum exhibits high sensitivity curvature inherent insensitivity temperature. simple inexpensive.

We introduce chitin nanofibers, nanochitin (ChNF), the cationic groups of which electrostatically complex in aqueous media with anionic a polyanion, seaweed alginate (SA). This allows formation continuous microfibers after drawing contacting suspensions. elucidate effect nanofiber aspect ratio (15, 25, and >60) on mechanical performance composite considering variables such as concentration, pH, rate. An automatic collector facilitated constant spinning velocity 30 mm/s upon interfacial...

A fiber-optic temperature sensor by using a multi-cladding special fiber is presented. It works on the basis of leaky mode resonance from core to outer cladding. With thin-thickness inner cladding, cladding strongly excited and resonant spectrum very sensitive refractive index variation coating material. By with temperature-sensitive silicone, response was investigated experimentally -20 degrees C 80 C. The results show high sensitivity (240 pm/degrees at 20 C) good repeatability.

Wet foams were produced via agitation and compressed air bubbling of aqueous solutions carboxymethylated lignin (CML). Bubble size distribution assessed in situ optical microscopy. Foamability, bubble collapse rate, foam stability (half-life time) analyzed as a function CML concentration, temperature, pH, content. Dynamic changes the liquid monitored by light transmission backscattering. Cellulosic fibers different aspect ratios (long pine short birch fibers) suspended under (0.6% phase)...

Chitin nanomaterials are wet-spun into microfibers that biocompatible and show promise for their cell viability proliferation.

To better understand the complex system of wet foams in presence cellulosic fibers, we investigate bubble-surface interactions by following effects surface hydrophobicity and tension on contact angle captive bubbles. Bubbles are brought into with model silica cellulose surfaces immersed solutions a foaming surfactant (sodium dodecyl sulfate) different concentrations. It is observed that bubble attachment controlled wetting, but significant scatter behavior occurs near transition from partial...

Wet-laying is a mature technology that applied in large scale for the manufacture of nonwovens, including paper products. However, it usually uses volumes water and energy-intensive. Here we used foam-laying to substantially diminish volume consumed formation fiber networks (5-fold reduction) reduce content nonwovens produced before drying, achieving reduced energy demand. The prospects were evaluated by comparing foam-laid wet-laid webs two types wood fibers: stiff (lignin-containing) or...

This study relates to the release of non-cellulosic components (cell wall heteropolysaccharides, lignin, and extractives) from swollen wood fibers in presence an anionic surfactant (sodium dodecyl sulfate, SDS) at submicellar concentrations. Highly surface-active aggregates form between SDS leached, components, which otherwise do not occur cationic or nonionic surfactants. The situ efficient generation liquid foams leached species is demonstrated. foaming capacity foam stability, as well...