Article
Polymer Science
Song-Qi Zhang, Wen-Qing Wang, Jia-Ping Lin, Li-Quan Wang
Summary: This study investigates the effect of chain ends on the rheological behavior of a polymer by using a unique model of polymer with nanoparticles tethered at each end. The research finds that polymer lengths and nanoparticle radii significantly affect the complex moduli and viscosity. The study also reveals the existence of shear thinning behavior and a change in the scaling exponent of complex viscosity with respect to frequency.
CHINESE JOURNAL OF POLYMER SCIENCE
(2023)
Article
Chemistry, Applied
Leticia Montes, Mauro Gisbert, Ignacio Hinojosa, Jorge Sineiro, Ramon Moreira
Summary: Ultrasound-assisted extraction of polyphenols from brown seaweeds can leave a solid phase where alginates can be extracted. This study characterized alginates extracted with and without intermediate drying stages at different temperatures, producing two bioactive compounds. High temperature drying decreased the average block length and viscosity of the alginate.
CARBOHYDRATE POLYMERS
(2021)
Article
Energy & Fuels
Subhash Ayirala, Abdulkareem AlSofi, Zuhair AlYousef, Jinxun Wang, Moataz Abu Alsaud, Ali AlYousef
Summary: By synergizing the composition of injection water through SmartWater technology, enhanced oil recovery (EOR) methods can be optimized to achieve higher oil recoveries and reduce the volume requirements of chemicals and gas. This study demonstrates the significant benefits of different SmartWater-based synergistic EOR technologies, which can have practical implications for more efficient and economical EOR projects in the field.
Article
Polymer Science
Vladimir Yu V. Rudyak, Artem S. Sergeev, Elena Yu E. Kozhunova, Vyacheslav V. Molchanov, Olga Philippova, Alexander Chertovich
Summary: In this work, the viscosities of randomly cross-linked microgels were studied using computer simulations methods. It was found that the cross-linking density and particle shape play crucial roles in the shear viscosity of microgels. Additionally, microgel dispersions in good solvent show less shear thinning compared to simpler polymer systems.
Article
Mechanics
Martin Zatloukal, Jiri Drabek
Summary: The monomeric friction coefficient for fully aligned chains was determined for three linear isotactic polypropylene melts, showing a significant reduction compared to the equilibrium friction coefficient. This supports the argument that a reduction in the friction coefficient is necessary to understand the dynamics of polymer melts in very fast flows, as suggested by recent rheological data and molecular simulations.
Article
Multidisciplinary Sciences
Shima Keisandokht, Valerie Orsat, Salwa Karboune, Bhalamurugan Gatamaneni Loganathan
Summary: Microwave-assisted extractions (MAE) of hydrocolloids from basil seed, fenugreek seed, and psyllium seed husk showed higher extraction yields and less destructive effects on functional properties compared to conventional heating extraction (CHE). The extracted hydrocolloids exhibited similar dielectric properties and shear-thinning behavior, with psyllium seed husk showing the highest viscosity. Dynamic flow measurements indicated weak gel characteristics for basil seed husk and psyllium seed husk hydrocolloids.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Zeeshan Tariq, Ahmed BinGhanim, Murtada Saleh Aljawad, Muhammad Shahzad Kamal, Mohamad Mahmoud, Zuhair AlYousef
Summary: This study generated a large amount of data on effective bulk foam viscosity using a high pressure high temperature (HPHT) foam rheometer device, and developed a predictive model through machine learning techniques. Temperature, corrosion inhibitor, and shear rate were found to have significant impact on reducing foam viscosity.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Chemical
Changhua Yang, Zhenye Yu
Summary: This study investigates the impact of the aggregation and adsorption behavior of oil droplets on the stability of foam systems, and proposes a liquid film drainage mechanism. Furthermore, rheometer analysis reveals that foam fluids exhibit complex rheological behavior.
Article
Thermodynamics
Alpana Singh, Tushar Sharma
Summary: This study investigates the influence of sand grain (size and concentration) on the stability and properties of Pickering CO2 foam. The results show that the presence of sand grain has an unfavorable effect on foam stability under certain conditions. Additionally, sand grain size and concentration also affect the interfacial tension and rheological properties of the foam.
Article
Nanoscience & Nanotechnology
Hema Choudhary, Michael B. Rudy, Matthew B. Dowling, Srinivasa R. Raghavan
Summary: This paper introduces a new class of foams with enhanced rheological properties that can form a more effective barrier to blood loss at injury sites, suitable for curtailing bleeding in the torso region. These aqueous foams are delivered through a double-barrelled syringe by combining precursors that produce gas bubbles in situ, containing a cationic polymer and an anionic polymer with hemostatic properties. Rheological studies contrast the improved rheology of these foams with the traditional foams, and animal wound models confirm their greater mechanical integrity in curtailing bleeding.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Krishna Raghav Chaturvedi, Ramesh Narukulla, Japan Trivedi, Tushar Sharma
Summary: The addition of silica nanofluids can stabilize CO2 foams and enhance foam stability. Foam stability is influenced by silica size and concentration, with test temperature also playing a key role.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Hasan Zerze
Summary: Polymer crystallization is an important topic in both fundamental physics and manufacturing. Molecular dynamics simulations were used to study polyethylene crystal nucleation and growth, revealing that the nucleation rate decreases with increasing droplet size and nuclei primarily emerge from the surface.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Zoran Kokan, Miroslava Duskova-Smrckova, Vladimir Sindelar
Summary: This study presents a hydrogel system based on the bambus[6]uril anion receptor, which can selectively form hydrogels in the presence of specific ions. The gelation mechanism and network structure were elucidated through various methods, and it was found that slow drug release can be achieved in physiological saline solutions.
Article
Food Science & Technology
Laura Cecilia Gomez Pamies, Maria Mercedes Lataza Rovaletti, Nancy Maria Jimena Martinez Amezaga, Elisa Ines Benitez
Summary: This study proposes the use of pyrodextrins obtained from sorghum to improve the traditional African sorghum beer, enhancing alpha-acid utilization, bitterness, and viscosity of the drink to achieve values similar to typical lager beer obtained from barley. Addition of 10 g/L pyrodextrin resulted in a 4.4% increase in wort viscosity and a 4.9% increase in beer viscosity.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Applied
Thierry Hellebois, Christos Soukoulis, Xuan Xu, Jean-Francois Hausman, Alexander Shaplov, Petros S. Taoukis, Claire Gaiani
Summary: A galactomannan extract of low protein residue was isolated from alfalfa seed endosperm meal, with mannose and galactose as the primary components. The intrinsic viscosity of dilute AAG dispersions was calculated, and viscosity behavior varied with concentration, showing both viscous and gel-like properties.
CARBOHYDRATE POLYMERS
(2021)
Article
Energy & Fuels
Francisco J. Ortega, Francisco J. Navarro, Moises Garcia-Morales
Article
Chemistry, Applied
D. Reinoso, M. J. Martin-Alfonso, P. F. Luckham, F. J. Martinez-Boza
CARBOHYDRATE POLYMERS
(2019)
Article
Construction & Building Technology
Francisco J. Ortega, Francisco J. Navarro, Martin Jasso, Ludo Zanzotto
CONSTRUCTION AND BUILDING MATERIALS
(2019)
Article
Polymer Science
Simona Senise, Virginia Carrera, Antonio Abad Cuadri, Francisco Javier Navarro, Pedro Partal
Article
Construction & Building Technology
A. A. Cuadri, F. J. Navarro, P. Partal
MATERIALS AND STRUCTURES
(2020)
Article
Polymer Science
Antonio A. Cuadri, Clara Delgado-Sanchez, Francisco Javier Navarro, Pedro Partal
Article
Green & Sustainable Science & Technology
A. A. Cuadri, S. Perez-Moreno, C. L. Altamar, F. J. Navarro, J. P. Bolivar
Summary: The study aims to utilize phosphogypsum waste in sustainable paving practice by producing FY-foamed bitumen for road applications. The results show that FY-foamed bitumen has enhanced engineering properties compared to bitumen prepared with natural gypsum, meeting EU regulations for NORM materials in building materials.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Clara Delgado-Sanchez, Antonio Abad Cuadri, Francisco Javier Navarro, Pedro Partal
Summary: This study reports a novel method for the synthesis and characterization of anhydrous phase change emulsions. By selecting an appropriate silicone surfactant and combining a post-processing protocol, the emulsions achieved stability during thermal cycles, reducing the crystallinity of the PCM.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Polymer Science
Rodrigo alvarez-Barajas, Antonio A. Cuadri, Francisco J. Navarro, Francisco J. Martinez-Boza, Pedro Partal
Summary: This study explores the use of three native lignin-rich products from industrial bioethanol production and pulping as emulsifiers, finding that emulsification pH strongly affects the stabilization ability of lignins.
Article
Chemistry, Multidisciplinary
Clara Delgado-Sanchez, Pedro Partal, Maria Jose Martin-Alfonso, Francisco Javier Navarro
Summary: This study successfully prepared stable polyethylene glycol-in-silicone oil phase change emulsions by controlling the composition and post-processing conditions. The compatibility of the silicone surfactant with the disperse phase was found to significantly affect the crystallinity and final properties of the emulsion.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
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
Avido Yuliestyan, Pedro Partal, Francisco J. Navarro, Raquel Martin-Sampedro, David Ibarra, Maria E. Eugenio
Summary: Oil-in-water bitumen emulsions stabilized by biobased surfactants, specifically lignin derived from the kraft pulping and bioethanol industries, were investigated in this study. A comprehensive chemical characterization of the lignin samples was conducted, revealing differences in lignin concentration, molecular weight, and presence of carbohydrate residues and ashes. The emulsification ability of lignin-based cationic surfactants was evaluated on prototype silicone oil-in-water emulsions, with cationic kraft lignin showing the best performance. It successfully stabilized bitumen emulsions with a high bitumen content using small surfactant concentrations.
Article
Energy & Fuels
Clara Delgado-Sanchez, Pedro Partal, Maria Jose Martin-Alfonso, Francisco Javier Navarro
Summary: Non-aqueous phase change emulsions are promising multifunctional fluids composed of phase change materials dispersed in carrier fluids. This paper presents the development of stable emulsions using stearic acid and silicone oil, and evaluates their properties and stability. The results demonstrate that these emulsions have the potential to be used for both latent heat storage and transport under extreme conditions.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Green & Sustainable Science & Technology
R. Alvarez-Barajas, A. A. Cuadri, C. Delgado-Sanchez, F. J. Navarro, P. Partal
Summary: Non-bituminous binders have been developed as sustainable roofing materials using bio-based rosin esters, waste cooking oil, and recycled polyethylene. The compatibility of binder compounds was studied through comprehensive characterization. Thermal conductivity and solar radiation tests revealed the enhanced energy efficiency of the non-bituminous binder compared to a reference polymer modified bitumen. The developed binders are expected to act as reflective building materials to reduce heat island effects and save energy.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Construction & Building Technology
S. Senise, V. Carrera, F. J. Navarro, P. Partal
CONSTRUCTION AND BUILDING MATERIALS
(2017)
