Article
Chemistry, Physical
Patrice Estelle, Gawel Zyla
Summary: This editorial note is dedicated to the Virtual Special Issue on Advances in Rheological Behavior of Nanofluids and Ionanofluids, introducing the objectives of the VSI and the contributions published in the Journal of Molecular Liquids.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Polymer Science
Petr Filip, Jana Zelenkova, Petra Peer
Summary: A new method for evaluating the initial polymer concentration required for the production of beadless nanofibres during electrospinning process is proposed in this study. This approach avoids the use of traditional concepts of overlap and entanglement concentrations, aiming to address the issue of inability to apply classical methods in specific material cases.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Construction & Building Technology
Cody M. Strack, Travis L. Thornell, Jennifer A. Jefcoat, Gordon J. Borne, Prasanth Alapati, Kimberly E. Kurtis, Robert D. Moser
Summary: Interdisciplinary study of alkali-silica reaction (ASR) provides a quantitative understanding of the viscoelastic behavior of ASR products. Six ASR gels with different compositions were synthesized, and the polymerization of SiO2 into 3-dimensional viscoelastic networks was found to depend on the concentration and type of cations. Ca2+ gels exhibited a higher level of gel network strength earlier than Na and K-dominated gels. The addition of Li+ had differing effects on the viscoelastic behavior and Q4 production of Na+ and K+ gels.
CEMENT AND CONCRETE RESEARCH
(2023)
Article
Polymer Science
Diego Caccavo, Rosario Cavallo, Michela Abrami, Mario Grassi, Anna Angela Barba, Gaetano Lamberti
Summary: The viscoelastic behavior of hydrogels is crucial for various applications, and the use of more simple and common instrumentation is necessary for reliable characterization in different sectors. Despite plate-plate shear rheometers being one of the best options, their high cost and requirement of trained operators limit their presence mainly to engineering labs.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Energy & Fuels
Larisa A. Strelets, Sergey O. Ilyin
Summary: The study investigated the viscosity and viscoelastic properties of oil samples to determine their gelation and glass transition temperatures. It was found that oilfield treatment can impact the viscosity, gelation, and composition of heavy crude oil.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Polymer Science
Manuela Walteros-Leon, Monica Lucia Alvarez-Lainez
Summary: Natural rubber latex (NRL) is a complex colloidal system that can be concentrated using hydroxyethyl cellulose (HEC) and sodium dodecyl sulphate (SDS), which alter its colloidal and rheological properties. SDS plays a key role in enhancing the creaming process and improving the electrostatic stability of the colloidal system.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Francisco Jose Ortega, Antonio Abad Cuadri, Pedro Partal, Francisco Javier Navarro
Summary: This paper proposes a successful approach of using Dodecenyl Succinic Anhydride (DSA) to soften aged bitumen and inhibit aging in road recycling. The experimental results show that DSA has a greater potential to soften bitumen compared to diluent oil, and it improves the wettability and compaction of asphalt.
Article
Polymer Science
Souheyla Chami, Nicolas Joly, Patrizia Bocchetta, Patrick Martin, Djamel Aliouche
Summary: The study explores the possibilities of using xanthan-g-polyacrylamide for polymer flooding in a medium salinity Devonian oilfield. The grafted copolymer shows improved rheological performance and stability in steady shear and oscillatory flow experiments, indicating better salt sensitivity and temperature sensitivity control compared to xanthan.
Article
Chemistry, Physical
Sergey O. Ilyin, Ivan I. Konstantinov
Summary: The rheological properties of five biphenyl derivatives, including their flow behavior and phase equilibrium, were investigated in detail. It was found that the increase of structural ordering leads to a gradual transition from liquid-like to solid-like flow behavior. Shear can affect the phase equilibrium of certain smectics, and different structural ordering and molecular packing also influence their rheological properties.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Thermodynamics
Nada Chami, Yasmine Salehy, Dennis Burgner, Pascal Clain, Didier Dalmazzone, Anthony Delahaye, Laurence Fournaison
Summary: The use of CO2 hydrates as phase change materials in secondary loop refrigeration is promising. This study found that the formation pressure of hydrates can be significantly lowered by using promoters. The rheological properties of CP and mixed CP + CO2 hydrate slurries were studied, and they exhibited a shear thinning behavior.
Article
Polymer Science
Angel Romo-Uribe
Summary: The study investigated the extensional flow behavior of PBIC and HPC solutions under capillary breakup, finding differences in molecular conformation and breakup times between the two polymers.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Houfang Chi, Hui Han, Guannan Tian, Hengyu Luo, Song Hong, Junyu Li, Haiqing Hu
Summary: By adding 0.1 wt% fillers, the melt viscosity of triblock copolymer styrene-isoprene-styrene (SIS) filling systems decreased to some extent. The reduction in viscosity cannot be solely explained by nanoscale effects of particles, but is also related to the damage of the PS microphase in SIS. The dynamic viscoelasticity of the filling systems was also investigated.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Yunxu Yang, Kunxiang Shi, Mingzhu Zhou, Yucai Shen, Tingwei Wang
Summary: This study developed a low viscosity PVC plastisol emulsion (PDE) using water as a thinner, by blending PVCE with DINPE. The results showed that the emulsion had a uniform droplet size distribution, strong tensile strength, elongation at break, and weak gel structure. This demonstrated the effectiveness of water in reducing the viscosity of PVC plastisol and promoting its application in glove production.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Noelle Billon, Romain Castellani, Jean-Luc Bouvard, Guilhem Rival
Summary: This paper explores the viscoelastic behavior during crystallization and melting of semicrystalline polymers, aiming to propose a preliminary model for the impact of crystallization and melting on the storage and loss moduli. The experimental results suggest that relying solely on the crystalline fraction is insufficient to model the rheology, while considering the microstructure at the spherulitic level could be more helpful. Additionally, the experiments enhance our understanding of the correlations between crystallization kinetics and its mechanical effects.
Article
Polymer Science
Xianglong Li, Yishen Lu, Teng Hou, Jing Zhou, Antuo Wang, Xianggui Zhang, Bin Yang
Summary: This article investigates the jet evolution process and fiber formation mechanism of amylopectin rich starch solution and compares it with linear polyvinylpyrrolidone (PVP) solution. The results show that beads formation in starch fibers can be controlled by solution concentration and amylose/amylopectin types, while PVP fibers exhibit minimal bead formation.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Viralkumar Patel, Yogeshkumar Dalsania, Madhar Sahib Azad, Tushar Sharma, Japan Trivedi
Summary: The structural changes of hydrolyzed PAM under different saline conditions significantly affect rheological properties, with extensional rheology providing a better description than shear rheology. The interactions between polymer chains and cations lead to the formation of cross-linked structures, impacting the molecular weight distribution and radius of gyration. Different types of polymers display distinct microstructures and rheological behaviors based on their interactions with divalent and monovalent cations.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Energy & Fuels
Zhongwei Wu, Chuanzhi Cui, Yinzhu Ye, Xiangzhi Cheng, Japan Trivedi
Summary: This paper establishes a model based on fractal theory to quantitatively evaluate the effects of spontaneous imbibition (SI) and displacement on the development of tight reservoirs. It reveals that reservoir properties have a significant impact on the imbibition time, and the effect of SI becomes more substantial when water viscosity decreases. Moreover, the contact angle, interfacial tension force, and displacement pressure difference also play a crucial role in influencing the effect of SI on the recovery of tight reservoirs.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Z. Zhang, Madhar Sahib Azad, J. J. Trivedi
Summary: This study addresses research gaps in understanding the dominant recovery mechanisms during surfactant flooding in unconventional, oil-wet reservoirs by investigating physico-chemical interactions and microfluidic studies using zwitterionic surfactant solutions. The observations show that significant IFT reduction and wettability alteration are both crucial for successful oil displacement in water-wet media during surfactant flooding in oil-wet formations.
Article
Energy & Fuels
J. L. Guevara, Rajan Patel, Japan Trivedi
Summary: Conventional steam injection strategies in SAGD are often empirically found rather than through a formal optimization process. Reinforcement learning offers an alternative approach to optimize steam injection policies by training an agent to continuously interact with the reservoir simulation model. In this study, the RL-SARSA algorithm is used to find the optimal steam injection policy and provide insights into the physics of the SAGD process.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Najmudeen Sibaweihi, Rajan G. Patel, Jose L. Guevara, Ian D. Gates, Japan J. Trivedi
Summary: A proactive steam allocation workflow that prioritizes steam allocation from low performing wells to high performing wells is proposed in this study. Data-driven predictive modeling is used for short-term forecasting of key performance indicators in real-time, leading to optimal steam allocation and increased net present value.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Chemical
Ankit Doda, Madhar Sahib Azad, Yohei Kotsuchibashi, Japan J. Trivedi, Ravin Narain
Summary: This study compares the rheological properties of different polymers in alkali-polymer flooding operations and finds that the newly synthesized P(AA-co-VP) copolymer shows improved performance in the presence of strong alkali, leading to better heavy oil recovery and transport.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Energy & Fuels
Benedicta N. Nwani, Madhar Sahib Azad, Japan Trivedi
Summary: Smart water flooding combined with surfactants can provide favorable interfacial tension reduction and wettability alteration for enhanced oil recovery in low-permeable, mixed/oil-wet carbonate reservoirs. The impact of different surfactant solutions prepared in various brines on fluid-rock and fluid-fluid interactions has been studied, revealing significant effects at specific brine concentrations.
Article
Chemistry, Physical
Amir Narimani, Farid Kordnejad, Prabhjyot Kaur, Japan Trivedi, Ferhi Najmeddine, Mahmood Hemmati, Adam Duong
Summary: The aim of this study was to evaluate the influence of graphene oxide (GO) on the structure of copolymer nanocomposite hydrogel based on acrylamide (AM) and 2-acryloamido-2-methylpropane sulfonic acid (AMPS). The study found that the copolymer nanocomposite hydrogel improved the rheological and mechanical properties of the cement slurry, reduced free water and fluid loss at high temperatures, shortened the thickening time, and increased compressive strength.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Krishna Raghav Chaturvedi, Sushant Bajpai, Japan Trivedi, Tushar Sharma
Summary: This study investigates the feasibility of using surfactant foams to enhance hydrogen storage in porous media, which is crucial for the future hydrogen-based economy. By controlling factors such as slug size and gas flow rate, significant improvement in hydrogen storage is achieved, offering a new approach for subsurface hydrogen storage.
Article
Polymer Science
Viralkumar Patel, Japan Trivedi, Tushar Sharma
Summary: This study characterized water-soluble associative polymers with varying hydrophobicity and found that intramolecular and intermolecular hydrophobic associations were responsible for polymer shrinkage and aggregation, respectively. The shear behavior of the polymers was similar, but higher shear viscosities were observed in the semi-dilute regime due to intermolecular hydrophobic associations. These associations also contributed to broader molecular weight distribution and higher relaxation time and extensional viscosity. The hydrophobicity affected the strain hardening behavior and the relaxation time and extensional viscosity of the polymers.
Article
Energy & Fuels
Xin Chen, Yiqiang Li, Zheyu Liu, Japan Trivedi, Yongqiang Tang, Mingyue Sui
Summary: This study used a microfluidic model combined with experimental evaluations to analyze the invasion patterns, displacement process, and improvement methods of immiscible fluids in porous media. The results showed that the invasion process can be divided into different modes, and the importance of influencing factors follows the order of viscosity ratio > wettability > injection rate > interfacial tension.
Article
Energy & Fuels
Xin Chen, Yiqiang Li, Zheyu Liu, Jian Zhang, Japan Trivedi, Xianjie Li
Summary: This paper focuses on the migration process and flow resistance prediction of elastic particles in porous media, establishing a migration and plugging model based on the Hertzian contact theory. Experimental results demonstrate that elastic particles form a filter cake within 3 cm of the injection end of the core, with a three-stage Gathered and Energized transport mode. The model can predict injection pressure with high consistency and provides a new method for studying elastic particle migration in porous media.
Article
Energy & Fuels
Zhong-Wei Wu, Chuan-Zhi Cui, Yin-Zhu Ye, Xiang-Zhi Cheng, Japan Trivedi, Shui-Qing-Shan Lu, Yin Qian
Summary: This study proposes a new model for investigating the proppant equilibrium height in hydraulic fractures for slickwater treatments. The comparison and sensitivity analysis confirm the validity of the proposed model. The proppant equilibrium height is influenced by the proppant density, injection rate, and diameter, affecting the friction factor and settling rates.
