Article
Energy & Fuels
Musaab Magzoub, Mohamed Shamlooh, Saeed Salehi, Ibnelwaleed Hussein, Mustafa S. Nasser
Summary: The study investigates the gelation kinetics of PAM/PEI cross-linkable polymer for enhancing wellbore stability in drilling fluids formulations. Different combinations of polymers and crosslinkers were evaluated, resulting in a gel mud formulation with thermal stability and flexibility to seal near wellbore fractures effectively. The produced gel showed promising results under high-temperature-high-pressure reservoir conditions, indicating improved wellbore strengthening.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Chemical
Ahmed Hamza, Mohamed Shamlooh, Ibnelwaleed A. Hussein, Mustafa S. Nasser, Abdulmujeeb T. Onawole, Musaab Magzoub, Saeed Salehi
Summary: In this study, the impact of aluminum acetate (AlAc) particle size on the gelation kinetics of polyacrylamide (PAM)-based gels was investigated. It was found that reducing particle size increases crosslinking sites and allows for lower PAM concentrations without AlAc settling. Additionally, the addition of bentonite extended gelation time by adsorbing AlAc on its surface, as shown by molecular simulation.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Mohamed Shamlooh, Ahmed Hamza, Ibnelwaleed A. Hussein, Mustafa S. Nasser, Saeed Salehi
Summary: The potential crosslinking of three types of nitrogen-containing functionalized silica (TAAcONa, guanidine, and triamine) with polyacrylamide (PAM) has been investigated, with only triamine silica able to successfully crosslink with PAM. The thermal stability of the functionalized silica was shown to be high, and the crosslinking mechanism of the new crosslinker was proposed to be similar to that of the PAM/PEI system, with functionalized silica-based gels being more stable and possessing higher strength.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Polymer Science
Mohammed Abdelfetah Ghriga, Seif El Islam Lebouachera, Nadjib Drouiche, Bruno Grassl
Summary: The viscoelastic behavior of a PEI crosslinked polymer gel prepared with a low hydrolysis/high molecular weight PHPA was investigated through dynamic shear measurements. Various parameters such as reactants concentrations, polymer's molecular weight, curing temperature, presence of inorganic salts, and solution's initial pH were systematically studied. The final gel strength varied with different parameters, with stronger gels formed at pH around 10 due to the asymmetrical effect of pH on the reactants.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Food Science & Technology
Qianru Li, Yufei Hua, Xingfei Li, Xiangzhen Kong, Caimeng Zhang, Yeming Chen
Summary: This study investigated the effect of heating temperatures on the properties of soymilk and how it affects the quality of tofu gels. The results showed that heat treatment significantly affected the gelation time, mechanical properties, and viscoelastic properties of tofu gels. This study provides valuable information for the improvement of tofu processing.
FOOD RESEARCH INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Ertan Arda, Selim Kara, Onder Pekcan, Gulsen Akin Evingur
Summary: The study used photon scattering to monitor the FCC process of AAm and Bis copolymerization, observing fractal-like structures forming in PAAm gels with increasing Bis content. The intensity of scattered photons increased during gelation and swelling processes, indicating the growth of fractal network structures. Fractal dimensions were found to increase as gelation and swelling times increased, reaching values up to 3.00 during gelation and 1.66 during swelling.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Engineering, Petroleum
Yingrui Bai, Chengtong Liu, Jinsheng Sun, Kaihe Lv
Summary: This study examines the performance of a polymer gel for well killing in high-pressure gas reservoirs. The gel exhibits high resistance to shear and temperature, making it suitable for long-term isolation of high-temperature formations. However, it is sensitive to high concentrations of salt ions and can be easily oxidized and disintegrated by acidic solutions. The gel also shows excellent well kill capacity and permeability recovery when used in gasflooding scenarios with oxidative degradation. Successful field testing in the Tarim Basin, China confirms its potential for use in high-temperature and high-pressure gas reservoirs.
Article
Chemistry, Applied
Duanquan Lin, Alan L. Kelly, Song Miao
Summary: This study investigated a novel method to enhance creaming stability of soy protein isolate (SPI)-stabilized emulsions by introducing alginate and alginate-based micro-gel particles to form gel-like emulsions. The presence of micro-gel particles in emulsions increased viscosity, creaming stability, and storage modulus, contributing to improved stability and expanding application of plant protein-stabilized emulsions in the food industry.
FOOD HYDROCOLLOIDS
(2021)
Article
Chemistry, Physical
Hideki Mori, Koki Tominaga, Kae Shimogama, Masayuki Hara
Summary: We prepared gelatin gels with different mechanical properties using various cooling protocols and gamma-irradiation. The slow-cooled gels exhibited higher Young's modulus and storage modulus, as well as a larger amount of triple-helical structure and covalent crosslinking points.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Chemistry, Physical
Mariia A. Mikhailova, Tsegai H. Tekle, Semyon V. Bachinin, Artyom A. Smirnov, Tamara N. Pogosian, Valentin A. Milichko, Alexandr V. Vinogradov, Maxim I. Morozov
Summary: Nanocrystalline titanium dioxide (TiO2) is a versatile and eco-friendly material used for micro-/nanofabrication or thin film deposition. Traditionally, TiO2 films are prepared using cost-efficient solution chemistry with additives that may affect the properties of the deposited layer. In this study, we investigated surfactant-free dispersion systems based on water-alcohol solvents and demonstrated the control of rheological properties for printing applications, such as offset printing of interference images, without compromising the functional layer.
Article
Chemistry, Physical
Binqiang Xie, Jiang Ma, Yun Wang, Alain P. Tchameni, Mingwang Luo, Jiantai Wen
Summary: A novel cross-linked modified polyacrylamide gel (HMP-Gel) was designed and developed for lost circulation treatment in high-temperature wells, showing good plugging efficiency and controllable gelation time.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Composites
Anupama Hiremath, Amar Murthy Ambekar, Sridhar Thipperudrappa, Sanjay Mavinkere Rangappa, Suchart Siengchin, K. N. Bharath
Summary: In this study, the interfacial interactions in a multi-component system were analyzed through the experimental values of storage modulus, loss modulus, and tan delta. It was found that the addition of TiO2 nanoparticles improved the rigidity of the polymeric chain, leading to increased storage and loss modulus. The optimum loading of TiO2 nanoparticles was determined to be 2 wt.% based on the results of tan delta, entanglement degree, and the effectiveness coefficient of the nanofiller.
COMPOSITE INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Yasser Zare, Kyong Yop Rhee
Summary: This study developed equations for relaxation time and storage modulus of biopolymer nanocomposites, investigating the influences of different parameters and proposing a model to explain the experimental results, highlighting key factors in determining these properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Applied
Yongli Zhang, Yi Yang, Xiaoxiang Zhao, Jianping Gao
Summary: It has been reported that monovalent cations and Mg2+ ions cannot form gels with alginate, while bivalent cations like Ca2+, Ba2+, Sr2+, Co2+, Ni2+, Zn2+, and Mn2+ ions can. This study explores the ionically crosslinking of alginate with a monovalent cation, Ag+ ion, and investigates the conditions for gel bead formation, as well as the structure and properties of the resulting alginate beads. Additionally, the possibility of drug loading in alginate beads is also examined. The results demonstrate that Ag+ ions can induce gelation of alginate and can be used to fabricate alginate beads similar to those prepared using Ca2+ as the crosslinking agent.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Energy & Fuels
Sayed Javad Hashemi, Faramarz Hormozi, Rasoul Mokhtari
Summary: This study proposes an optimal method for precise placement of sodium silicate gelants in a formation by controlling the gelation time. The method aims to enhance the effectiveness of these blocking agents in water shut-off, profile modification, and carbon storage projects.
Article
Engineering, Chemical
Jian Zhang, Faical Larachi, Ion Iliuta, Seyed M. Taghavi
Summary: This study focuses on understanding the phenomenon of liquid drainage of a porous medium submitted to hexapod-controlled column oscillations. Liquid saturation transients, drainage rate, and drainage velocity were monitored under forced tilting and non-tilting oscillations. A 3D/transient Eulerian two-fluid model was solved to reproduce the accelerated liquid drainage in oscillating columns.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Roozbeh Mollaabbasi, Lene Jensberg Hansen, Tor Grande, Seyed Mohammad Taghavi, Houshang Alamdari
Summary: This study investigates the effects of fine particle concentration and temperature on the viscoelastic properties of the binder matrix in the formation of carbon anodes. It was found that increasing the fine particle concentration increases viscosity, while increasing temperature reduces viscosity. The three-element Maxwell model accurately predicts the elastic and viscous moduli of the binder matrix.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Wei Liu, Faical Larachi, Guang-Wen Chu, Yong Luo, Seyed Mohammad Taghavi
Summary: This study visualized the liquid spills in porous media under marine oscillations and investigated the effects of liquid gravity and moving-bed inertial forces on the spills. The results showed that gravity force oscillations had a significant impact on the spill morphology, while other forces played secondary roles. The branching of liquid spills under gravity not only enhanced wetting but also symmetrized the spills and reduced the wall-biased liquid influx.
Article
Environmental Sciences
H. Hassanzadeh, A. Eslami, S. M. Taghavi
Summary: This study experimentally investigates buoyant jet flow characteristics with the injection of a heavy fluid vertically downward, finding that viscosity ratio plays a key role in determining the stability and instability of the jet flow, especially affecting the behaviors in the jellyfish regime and funnel regime.
ENVIRONMENTAL FLUID MECHANICS
(2022)
Article
Mechanics
S. Noroozi, W. Arne, R. G. Larson, S. M. Taghavi
Summary: Centrifugal spinning is a technique used to produce ultra-fine nanofibres from polymer melts/solutions. A mathematical model has been developed to analyze the flow parameters and their effects on fibre fabrication performance. The model shows that nonlinear rheology greatly affects fibre trajectory, radius, and normal stresses. Adjusting the flow parameters can control fibre thickness and curvature.
JOURNAL OF FLUID MECHANICS
(2022)
Article
Mechanics
Jesse Greener, William Y. Harvey, Cynthia Gagne-Thivierge, Sepideh Fakhari, Seyed Mohammad Taghavi, Jean Barbeau, Steve J. Charette
Summary: A microfluidic approach was used to study the effect of shear stress on biofilms from a dental unit waterline (DUWL)-isolated P. aeruginosa strain, PPF-1. The response of the PPF-1 biofilm to shear stress was compared to a clinical P. aeruginosa strain, PAO1, and the effects of additional Mg2+ ions were investigated. It was found that PPF-1 biofilms showed weaker attachment and more frequent slough/regrowth cycles under low ionic conditions, suggesting increased downstream colonization. However, introducing Mg2+ into the culture increased their mechanical stability and elevated their tolerances to shear stresses.
Article
Mechanics
S. Akbari, S. M. Taghavi
Summary: We investigated the injection flow of a heavy viscoplastic fluid into a light Newtonian fluid through modeling and experiments. Three distinct flow regimes were observed as the injection rate increased, namely the breakup, coiling, and buckling regimes. A lubrication approximation model was developed to classify the flow regimes based on dimensionless flow parameters.
JOURNAL OF FLUID MECHANICS
(2022)
Article
Mechanics
B. Taghilou, M. Pourjafar-Chelikdani, S. M. Taghavi, A. Mahdavi Nejad, A. Kuchumov, K. Sadeghy
Summary: This study investigates the effect of liquid elasticity on the peristaltic transport of a single drop. The results show that the elasticity of a drop has a negligible effect on its transport velocity when placed on the centerline, but significantly delays its migration to the centerline if the drop is off-center. Moreover, when only the liquid surrounding the drop is viscoelastic, elastic stresses have a significant but non-monotonic effect on the drop velocity.
JOURNAL OF NON-NEWTONIAN FLUID MECHANICS
(2022)
Article
Mechanics
S. Akbari, S. M. Taghavi
Summary: In this study, the injection of a viscoplastic fluid into a quiescent Newtonian medium is investigated experimentally, highlighting the different flow patterns and the effects of governing dimensionless numbers. The research focuses on analyzing detailed flow features and sub-regimes, presenting results versus key dimensionless numbers for application in oil and gas well processes and 3D printing technologies.
JOURNAL OF NON-NEWTONIAN FLUID MECHANICS
(2022)
Article
Energy & Fuels
A. Eslami, S. Akbari, S. M. Taghavi
Summary: We conducted an experimental study on buoyant displacement flows in vertical narrow annular configurations, simulating the oilfield primary cementing process. We used different fluid proxies with varying rheological behaviors and density contrasts. Our analysis focused on the effects of viscosity ratio, densimetric Froude number, Reynolds number, eccentricity, and reciprocation frequency on the displacement flow patterns and efficiency.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Chemical
Ion Iliuta, Faical Larachi, Wei Liu, Yong Luo, Seyed Mohammad Taghavi
Summary: This study simulated the spreading of liquid in various porous media as a preliminary step in designing fixed-bed reactors for marine applications. The results showed that the liquid spreading was influenced by capillary pressure and mechanical dispersion forces, as well as the tilt and rolling amplitude of the packed bed.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Review
Engineering, Chemical
Ali-Akbar Sarbanha, Faical Larachi, Seyed-Mohammad Taghavi, Mareen Thiboutot-Rioux, Alexandre Boudreau, Gabriel Dugas
Summary: The urgency of reducing flue gas pollution in maritime transport necessitates a comprehensive approach to assess sustainability and environmental impacts. Marinized gas scrubbers, which can be retrofitted to existing ships, are crucial in reducing ship exhaust emissions and countering the use of expensive low-sulfur fuels. However, the growing priority of reducing greenhouse gas emissions poses new challenges for emissions compliance. This study critically reviews different types of scrubbers, potential risks of secondary emissions, and recent efforts in reducing NOX and CO2 emissions through onboard carbon capture systems and alternative fuel combustion.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Mechanics
S. Akbari, S. M. Taghavi
Summary: This study investigates the buoyant miscible injection of a high-viscosity fluid into a pipe filled with a low-viscosity fluid. Experimental methods such as high-speed camera imaging, ultrasound Doppler velocimetry, planar laser induced fluorescence, and particle image velocimetry are used, along with numerical simulations. The effects of viscosity ratio, Reynolds number, and inclination angle on flow dynamics are analyzed, and the concentration and velocity fields, average front velocity of the heavy fluid, mixing index, and flow regimes are described. The findings show that the front velocity is mainly determined by an inertial-buoyant balance, and a heavy fluid front separation occurs under certain conditions.
Editorial Material
Mechanics
Ian Frigaard, Michael D. Graham, J. Esteban Lopez-Aguilar, Seyed M. Taghavi, Lin Zhou
JOURNAL OF NON-NEWTONIAN FLUID MECHANICS
(2023)
Article
Mechanics
S. Noroozi, H. Hassanzadeh, W. Arne, R. G. Larson, S. M. Taghavi
Summary: We assess the performance of Centrifugal Spinning (CS) for making nanofibres through laboratory experiments and modelling. The effects of various parameters on the CS process are analyzed experimentally and using a comprehensive string model based on viscoelastic properties of the polymer. The analysis includes the dependence of the process on key dimensionless numbers and classification of flow regimes into stable and unstable.
JOURNAL OF NON-NEWTONIAN FLUID MECHANICS
(2023)
Article
Mechanics
Chen Liu, Jianzhong Lin, Zhenyu Ouyang
Summary: This study simulated the locomotion state and motion type of elliptical squirmers in a channel flow of power-law fluids. The influence of different parameters on the squirmers was explored, and it was found that coupled structures are prone to break and viscosity significantly affects the flow velocity and motion type of squirmers.
Article
Mechanics
E. E. Herrera-Valencia, M. L. Sanchez-Villavicencio, C. Soriano-Correa, O. Bautista, L. A. Ramirez-Torres, V. J. Hernandez-Abad, F. Calderas
Summary: This study investigated the electroosmotic flow of a viscoelastic fluid in a capillary system. The rheology of the fluid was characterized by a novel generalized exponential model equation, and the effect of charge density on the double-layer field and electrical forces was analyzed. Mathematical models were used to describe the rheological properties and flow performance of the fluid, and experimental data were used to make predictions. The study also examined the influence of applied forces on the structure of the fluid.
Article
Mechanics
Stefano Amadori, Giuseppe Catania
Summary: This article presents a multi-step, iterative technique for locally non-parametric identification of the standard linear solid (SLS) material model using fractional order time differential operators. Test input data consists of a set of identified material complex modulus values estimated at different frequency values obtained from input-output experimental measurements and quasi-static relaxation measurements on the same specimen. The proposed technique is based on an algebraic procedure to solve an overdetermined system of linear equations in order to obtain optimal values for the unknown parameters of the model. The procedure is non-parametric, as the order of the SLS model is initially unknown.