Abstract Nanocrystalline cellulose (NCC) is an emerging renewable nanomaterial that holds promise in many different applications, such as personal care, chemicals, foods, pharmaceuticals, etc. By appropriate modification of NCC, various functional nanomaterials with outstanding properties, or significantly improved physical, chemical, biological, well electronic properties can be developed. The nanoparticles are stabilised aqueous suspension by negative charges on the surface, which produced...

The most abundant natural biopolymer on earth, cellulose fiber, may offer a highly efficient, low-cost, and chemical-free option for wastewater treatment. Cellulose is widely distributed in plants several marine animals. It carbohydrate polymer consisting of β-1,4-linked anhydro-D-glucose units with three hydroxyl groups per anhydroglucose unit (AGU). Cellulose-based materials have been used food, industrial, pharmaceutical, paper, textile production, treatment applications due to their low...

Sulfated cellulose nanocrystals (CNC) with high surface charge density are inadequate for stabilizing oil–water emulsions, which limits their applications as interfacial stabilizers. We performed end-group modification by introducing hydrophobic chains (polystyrene) to CNC. Results showed that the modified CNC more effective in emulsifying toluene and hexadecane than pristine Various parameters were investigated, such concentration of particles, electrolytes, polarity solvents on...

Abstract Nanotechnology has been successfully implemented in many applications, such as nanoelectronics, nanobiomedicine, and nanodevices. However, this technology rarely applied to the oil gas industry, especially upstream exploration production. The industry needs improve recovery exploit unconventional resources. cost of research production is under immense pressure, it becoming more difficult justify investment when crude price weak depressed. There a widespread belief that...

Conventional wastewater treatment systems generally require multiple steps and complex procedures to remove aqueous pollutants oil contaminants from polluted water. Herein, we fabricate an underwater superoleophobic membrane by cross-linking konjac glucomannan on pristine fabrics, demonstrating that the concept of oil–water separation principle pollutant removal can be integrated. Such biopolymer-modified fabric not only separates mixtures with high efficiency (up 99.9%), but also exhibits...

Abstract Alkali/surfactant/polymer (ASP) flooding process is proven to be vitally effective for enhancing oil recovery (EOR) in the industry. However, foaming behavior generated by breakthrough of chemical agents produced liquid and increasingly concerned as a terrible problem during production. A set experiments were recently performed investigate effects properties ASP liquid. The factors affecting capacity foam stabilization discussed, differences between strong base weak first compared....

Recovery of crude oil in rock nanopores plays an important role the petroleum industry. In this work, we carried out molecular dynamics (MD) simulations to study process ionic surfactant solution driven oil-detachment model silica (SiO2) nanochannels. Our MD simulation results revealed that induced by flooding can be described a three-stage including formation and delivery micelles, micelle disintegration-spread migration on oil–aggregate surface, aggregate deformation-to-detachment. A from...

In this work, a nonlinear model that integrates the group contribution (GC) method with well-known machine learning algorithm, i.e., artificial neural network (ANN), is proposed to predict viscosity of ionic liquid (IL)-water mixtures. After critical assessment all data points collected from literature, dataset covering 8,523 IL-H2O mixtures at different temperature (272.10 K-373.15 K) selected and then applied evaluate ANN-GC model. The results show 4 or 5 neurons in hidden layer capable...

Foaming issues are encountered at the stages in crude oil production, transportation, processing, especially chemical flooding enhanced recovery (EOR) oilfields. These accumulated foams would cause a lot of trouble for downstream operation. The destruction under ultrasonic has been increasingly paying attention background green oilfield development. This study focuses on decay kinetic characteristics alkaline-surfactant-polymer-strengthened standing wave. performance diverse was...

The detachment process of an oil molecular layer situated above a horizontal substrate was often described by three-stage process. In this mechanism, the penetration and diffusion water molecules between phase proposed to be crucial step aid in removal layer/drops from substrate. work, two-dimensional alkane molecule silica surface aqueous surfactant solutions is studied means dynamics (MD) simulations. By tuning polarity model surfaces, as well considering different types flow effects, more...

Abstract Janus colloidal surfactants with opposing wettabilities are receiving attention for their practical application in industry. Combining the advantages of molecular and particle-stabilized Pickering emulsions, generate remarkably stable emulsions. Here we report a straightforward cost-efficient strategy to develop nanoplate (JNPS) from an aluminosilicate nanoclay, halloysite, by stepwise surface modification, including innovative selective modification step. Such found be able...

The Debye-Hückel theory is probably the most widely used option for counting electrostatic forces in thermodynamic models. This work investigates effects of two important parameters – size ions and relative static permittivity solution. Three different activity coefficient models are analyzed compared 14 salt systems order to have a more complete picture capabilities limitations theory. three based on assumptions parameters, but all with self-potential term ion-solvent interactions. For full...

Reducing the viscosity of heavy oil is beneficial to process recovery, so it great significance explore influence different factors on oil. In this study, molecular dynamics (MD) simulations were carried out study properties 15 structurally homologous model polycyclic molecules under shear conditions and with a toluene additive concentrations. Over 50 sets simulation systems constructed simulated in work. The structure effect including phenyl ring arrangements, alkyl side chain decorations,...

With the ongoing advancement in oil exploration, microemulsion, as an innovative displacement method, has garnered considerable attention owing to its exceptional physicochemical properties enhancing crude recovery. As such, this study initially delineates fundamental concepts, classifications, formation mechanisms, advantages, and preparation methodologies of microemulsions. Subsequently, it introduces selection criteria for microemulsion components, followed by elucidation characterization...

Microemulsions are thermodynamically stable, optically isotropic, transparent, or semi-transparent mixed solutions composed of two immiscible solvents stabilized by amphiphilic solutes. This comprehensive review explores state-of-the-art techniques for characterizing microemulsions, which versatile essential across various industries, such as pharmaceuticals, food, and petroleum. article delves into spectroscopic methods, nuclear magnetic resonance, small-angle scattering, dynamic light...

A well-defined random copolymer containing 2-(2-methoxyethoxy) ethyl methacrylate (MEO2MA, Mn = 188 g/mol) and poly(ethylene glycol) methyl ether (PEGMA, 2080 (poly(MEO2MA-co-PEGMA2080)), 17300 was synthesized using the atom transfer radical polymerization (ATRP) process, its thermoresponsive behaviors in aqueous solution were investigated. In comparison to other temperature-sensitive copolymers based on oligo(ethylene methacrylates, this exhibited an unusual thermally induced two-stage...

Abstract Dynamically engineering the interfacial interaction of nanoparticles has emerged as a new approach for bottom‐up fabrication smart systems to tailor molecular diffusion and controlled release. Janus zwitterionic nanoplates are reported that can be switched between locked unlocked state at interfaces upon changing surface charge, allowing manipulation properties in fast, flexible, switchable manner. Combining experimental modeling studies, an unambiguous correlation is established...

We demonstrate a facile route to in situ growth of lyotropic zirconium phosphate (ZrP) nanoplates on textiles via an interfacial crystal growing process. The as-prepared hybrid membrane shows hierarchical architecture textile fibers (porous platform for fluid transport), ZrP nanoplatelets (layered scaffolds chemical barriers), and octadecylamine (organic species superhydrophobic functionalization). Interestingly, such is able separate the oily wastewater with high separation efficiency...

Although the interfacial properties of microemulsions have been extensively studied in both experimental and simulation research studies, molecular mechanisms stability fluidity about microemulsion are still poorly understood. Herein, we report a dynamics study to elaborate motion an emulsion droplet involving dichain surfactant Aerosol OT (AOT) its evolution at oil–water interface. By varying concentrations AOT, show that thickness emulsification rate display piecewise change as coverage...

The ability to form hydrogen bonds is one of the most important factors behind water's many anomalous properties. However, there still no consensus on bond structure liquid water, including average number in water. We use molecular dynamics simulations polarizable iAMOEBA water model for investigating characteristics over a wide range temperatures and pressures. Geometric definitions often rectangular region plane distances angles. In this work, we find that an elliptical more appropriate...

CO2-switchable hydrogels have been well documented during the past decade; however, reversible response makes them unable to sequestrate CO2 owing gas release and viscosity reduction under high temperatures, weakening their capacity absorb CO2. To address this issue, a series of copolymers based on grafting poly(dimethylaminopropyl methacrylamide) onto backbone sodium carboxymethyl cellulose (NaCMC) were prepared, characterized, examined rheologically. In semidilute entangled regime,...