Article
Nanoscience & Nanotechnology
Peilong Li, Arkaye Kierulf, Judith Whaley, James Smoot, Mariana Perez Herrera, Alireza Abbaspourrad
Summary: In this study, starch with a heterogeneous pattern was created by physically fusing particles with different charges. The texture of starch slurries could be fine-tuned by manipulating the degree of patchiness and charge density. Environmental factors also had an impact on the texture of starch.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Food Science & Technology
Osman Gul, Latife Betul Gul, Tugba Baskinci, Mahmut Ekrem Parlak, Furkan Turker Saricaoglu
Summary: The functional, bulk, and interfacial shear rheological properties of hazelnut protein isolate were studied at different pH values and ionic strength levels. The findings showed that pH significantly affected protein solubility, emulsion properties, water and oil holding capacities, foam stability, surface hydrophobicity, and free-SH groups. Protein solubility increased with increasing ionic strength. The flow behavior of hazelnut protein suspensions was shear thinning, with the best gel structure observed at pH 3.0 and 4.0.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Polymer Science
Laszlo Seres, Edit Csapo, Norbert Varga, Adam Juhasz
Summary: This paper investigates the assembly process of colloidal hyaluronic acid (HyA) based hydrogel particles, with a focus on the formation of surfactant-neutralized polysaccharide networks. By measuring various indicators, such as rheology, light scattering, zeta potential, turbidity, and charge titration, it is found that the preparation of HyA-CTAB particles can be well controlled. The results show that a higher amount of negative charges can be detected on the polymer chain at smaller initial amounts of HyA, and the pH has negligible effect on the formation process.
Article
Materials Science, Ceramics
Yanliang Ji, Simon Becker, Zichen Lu, Alexander Mezhov, Regine von Klitzing, Schmidt Wolfram, Dietmar Stephan
Summary: This study reveals the significant influence of resting time on the rheological properties of cement suspensions, which is closely related to non-absorbed polycarboxylate superplasticizers (PCEs) size variation. Adsorbed PCE during resting tends to bridge particles instead of dispersing them, leading to an increased yield stress.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Environmental Sciences
Devesh Bhatt, Namrata Gururani, Anjana Srivastava, Prakash Chandra Srivastava
Summary: The adsorption of 4-nitrophenol on goethite reached equilibrium at 24 hours and followed pseudo-second order kinetics. Higher adsorption was observed at higher solution pH values on goethite.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Chemistry, Applied
Behzad Zakani, Dana Grecov
Summary: This study systematically investigated the effect of ultrasonic treatment on the yield stress of highly concentrated cellulose nano-crystalline (CNC) suspensions. The results showed that increasing the ultrasonic energy led to a decrease in yield stress, which was governed by the microstructural transformations of the CNC agglomerates.
CARBOHYDRATE POLYMERS
(2022)
Article
Construction & Building Technology
Hamza Gullu, Mehmet Emin Yetim, Elif Bacak Gullu
Summary: This study investigates the rheological abilities of nano-silica added to Portland cement based-grouts for ground improvement. The results indicate that low to moderate dosages of nano-silica (<2.5%NS) at a water/binder ratio of 1 yielded more favorable flow. The strength tests show that increasing nano-silica dosage proportionally increased the unconfined compressive strength (UCS) up to 2%NS, then gradually decreased. The moderate replacements (1.5%NS-2%NS) appeared better for flow issues and provided sufficient bearing strength in ground enhancement.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Mantas Ziaunys, Andrius Sakalauskas, Kamile Mikalauskaite, Vytautas Smirnovas
Summary: Researchers conducted extensive studies on the aggregation reactions of alpha-synuclein and found that both ionic strength and protein concentration are crucial factors determining the structural variability of alpha-synuclein amyloid fibrils. Their study shows that even under identical conditions, up to four distinct types of aggregates can be observed.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Physical
Anna Irto, Rosalia Maria Cigala, Concetta De Stefano, Francesco Crea
Summary: The hydrolytic behavior of iron(III) in different salt solutions was studied using potentiometry and UV-Vis spectrophotometry. The study determined the speciation model and molar absorptivity of iron(III) in the solutions. The hydrolytic constants were found to be influenced by the ionic strength and the interaction with anions of the supporting electrolyte.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Lei Xing, Tian Xia, Qiaoxin Zhang
Summary: In this study, superhydrophobic surfaces were successfully prepared using hydrophobic nano-SiO2 particles as spray fillers. The influence of the concentration change of hydrophobic nano-SiO2 particles on their wettability was explained according to the Cassie and Wenzel theory. The results provide important insights for advancing the practical application of superhydrophobic surfaces.
Article
Chemistry, Multidisciplinary
Yujiang Li, Chuanxian Li, Zhiqi Zhao, Wei Cai, Xue Xia, Bo Yao, Guangyu Sun, Fei Yang
Summary: This study investigates the effects of test temperature and asphaltene concentration on the stability of water-in-waxy crude oil emulsions. The results indicate that dissolved-state wax facilitates the adsorption of asphaltenes and enhances the interfacial properties, while wax crystals form a network structure and immobilize water droplets, thus improving the stability of the emulsions.
Article
Materials Science, Ceramics
Mehdi Chougan, Francesca Romana Lamastra, Daniela Caschera, Saulius Kaciulis, Eleonora Bolli, Claudia Mazzuca, Seyed Hamidreza Ghaffar, Mazen J. Al-Kheetan, Giampiero Montesperelli, Alessandra Bianco
Summary: There is a growing interest in using nanosized fillers, such as graphene oxide (GO), in cement-based construction materials to enhance mechanical properties. The interaction between GO and cement can significantly improve the macroproperties of cement. A GO water suspension was selected for its reproducibility and environmental safety. Various tests, including morphological characterization and mechanical property evaluation, were performed on samples with different dosages of GO. Results showed that an extra-low dosage of GO (0.01%) exhibited the most promising enhancement in mechanical strength.
CERAMICS INTERNATIONAL
(2023)
Article
Biochemical Research Methods
Bryan Ang, Ankush Sookram, Citsabehsan Devendran, Vincent He, Kellie Tuck, Victor Cadarso, Adrian Neild
Summary: Surface acoustic wave (SAW) driven devices often use polymeric microfluidic channels with low acoustic impedance mismatch to the fluid in contact for precise control of the wave field. This work demonstrates the successful implementation of integrating a glass insert at the ceiling of the PDMS microfluidic channel in a SAW activated nanosieve, resulting in a significant increase in flow rate and maintenance of high capture efficiencies. The glass-inserted device allows for processing larger volume samples, overcoming a main limitation of these devices.
Article
Materials Science, Composites
Umesh Marathe, Meghashree Padhan, Jayashree Bijwe
Summary: The adhesion between polymer reinforced with TiC nanoparticles and steel surface is influenced by factors such as surface free energy, shape, amount, and size of particles, and reinforcement effects in causing cohesive or adhesive failure. Nanocomposites containing TiC nanoparticles outperformed microcounterparts in various physical, thermal, mechanical, and adhesive strength properties. The extent of adhesive failure decreased and cohesive failure increased with an increase in nano-particles, as validated by available models for nanocomposites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Construction & Building Technology
Muhammad Atiq Orakzai
Summary: This paper investigates the effect of the binary combination of nano-alumina and nano-titanium dioxide on the mechanical properties of concrete, finding that the combination leads to improved microstructure and increased strength. Optimal dosage of nanoparticles can effectively enhance the performance of concrete.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Engineering, Chemical
Ri Zhang, Shasha Zhang, Mengyan Ding
Summary: A thin liquid film method is proposed to evaluate sand erosion in annular flow. This method considers the direct interaction between the liquid film and gas core, as well as the entrainment and deposition of droplets. The erosion rate is calculated by considering the effects of liquid entrainment and particle velocity decay. The method is fully verified by comparing with experimental data.
Article
Engineering, Chemical
Yu Suo, Xianheng Su, Wenyuan He, Xiaofei Fu, Zhejun Pan
Summary: This research investigates the mechanical properties of sandstone-shale composite through orthogonal experimental method and discrete element simulation. The results show that different lithologies and thickness ratios can affect the strength and fracture mode of the composite rock samples.
Article
Engineering, Chemical
Maurizio Troiano, Andrea El Hassanin, Roberto Solimene, Alessia Teresa Silvestri, Fabrizio Scala, Antonino Squillace, Piero Salatino
Summary: This study investigates the potential of Fluidized Bed Finishing (FBF) for square flat AlSi10Mg specimens manufactured via Laser-Powder Bed Fusion (L-PBF) additive manufacturing technology. The results show that good finishing can be achieved using rotation-assisted tests, with a maximum reduction of surface roughness by 67%. Steel particles are found to be the most effective bed material.
Review
Engineering, Chemical
Ningbo Song, Wanzhong Yin, Jin Yao
Summary: Seawater's dissolved salts and minerals have various effects on the flotation process, including influencing the characteristics and behavior of flotation factors, as well as affecting the surface of sulfide minerals. In most cases, seawater has adverse effects on the flotation of sulfide minerals, but these effects can be mitigated by adjusting the reagents.
Article
Engineering, Chemical
Kaiqiao Wu, Shuxian Jiang, Victor Francia, Marc-Olivier Coppens
Summary: In rectangular and cylindrical annular fluidized beds, pulsating gas flow can create regular bubble patterns, overcoming challenges seen in conventional units. This study provides new opportunities for modularization of fluidized bed operations.
Article
Engineering, Chemical
Shuo Li, Huili Zhang, Jan Baeyens, Miao Yang, Zehao Li, Yimin Deng
Summary: The paper assesses the behavior of cohesive Geldart C-type particles when fluidized by air with the aid of vibration. It determines that mechanical vibration is a simple and effective method to improve the fluidity of cohesive particles during fluidization.
Article
Engineering, Chemical
Zhenfei Feng, Qingyuan Zhang, Shanpan Liang, Zhenzhou Li, Fangwen Guo, Jinxin Zhang, Ding Yuan
Summary: A new micro/mini-channel heat sink (MCHS) with a combined structure of longitudinal and transverse vortex generators is designed, using Al2O3 nanofluid as the working medium. The study explores the effects of transverse vortex generator shape and longitudinal vortex generator angle on the hydraulic and thermal characteristics, comprehensive performance, entropy generation, and exergy efficiency. The results show that the triangular transverse vortex generator improves the comprehensive performance and exergy efficiency. Combined with the longitudinal vortex generator, the MCHS achieves the best comprehensive performance, entropy generation, and exergy efficiency when the Reynolds number is 742.
Article
Engineering, Chemical
Kostas Giannis, Christoph Thon, Guoqing Yang, Arno Kwade, Carsten Schilde
Summary: This study presents a 3D convolutional neural network (3D-CNN) methodology for generating realistic 3D models of particles. The method trains on 2D projections of particle images to predict their 3D shapes, and evaluates the accuracy of the predictions using Fourier shape descriptors (FSDs). This methodology has wide applications in particle shape analysis.
Article
Engineering, Chemical
Zheng-qing Zhou, Lu-jia Chai, Yu-long Zhang, Ya-bin Wang, Ze-chen Du, Tian-yi Wang, Yu-zhe Liu
Summary: The dynamic oxidation and shell-breaking processes of aluminum nanoparticles (ANPs) during heating were studied using in situ transmission electron microscopy. The results revealed that the changes in shell thickness can be divided into three stages, and the active aluminum content of ANP decreased before shell-breaking.
Article
Engineering, Chemical
Fulei Chen, Huaqing Ma, Zihan Liu, Lianyong Zhou, Yongzhi Zhao
Summary: A particle breakage model based on the particle replacement scheme, using the polyhedral model to describe particles, is proposed in this work to accurately describe the breakage of a large number of particles. Additionally, a fast-cutting algorithm is proposed to reproduce the size distribution of progeny particles determined by the breakage model. The validation and simulation results show satisfactory accuracy, efficiency, and stability of the algorithm.
Review
Engineering, Chemical
Matteo Errigo, Christopher Windows-Yule, Massimiliano Materazzi, Dominik Werner, Paola Lettieri
Summary: Gas-solid fluidized-bed systems have advantages in terms of chemical reaction efficiency and temperature control, making them widely used in industrial applications. However, the design, scale-up, and optimization of these complex units are limited by the lack of deep physical understanding. Non-invasive and non-intrusive diagnostic techniques provide a way for researchers to study these systems without affecting the flow field or directly contacting the medium under study.
Article
Engineering, Chemical
Saeed Fateh, Mohammad Behshad Shafii, Mohammad Najafi, Cyrus Aghanajafi
Summary: Applying a magnetic field to ferrofluids alters their flow characteristics and enhances heat transfer. Through visualization and quantitative investigation, it is found that the magnetic field influences the flow patterns and velocity profiles, improving fluid mixing and vorticity magnitude.
Article
Engineering, Chemical
Lei Gao, Bingbing Wei, Xiaochuan Hu, Zaifeng Yao, Yiwen Fang, Xuejian Gao
Summary: In this study, a numerical model of sand triaxial test was established using discrete element software PFC3D, and an indoor triaxial test was conducted to calibrate the numerical model. The influence of microscopic parameters on the macroscopic mechanical response of sand was analyzed. The results showed that the friction coefficient had the greatest impact on the peak strength and residual strength of the sand's stress-strain curve, and it was positively correlated. The normal tangential stiffness ratio was negatively correlated, while the porosity and boundary flexibility stiffness had minimal influence on it.
Article
Engineering, Chemical
Xuan Liu, Jie Gong, Kai Jiang, Xiaojuan Lai, Yu Tian, Kang Zhang
Summary: This study aimed to improve the performance of lignite coal water slurries (CWSs) by synthesizing a series of three-arm amphiphilic block copolymers. By controlling the relative molecular weight, hydrophilic/hydrophobic ratio, and ionic group content, the apparent viscosity of CWSs was significantly reduced and the static stability was improved. Thermogravimetric testing and XPS analysis were conducted to reveal the mechanism behind the improved performance.
Article
Engineering, Chemical
Lanka Dinushke Weerasiri, Daniel Fabijanic, Subrat Das
Summary: Fluidization at low pressure offers significant benefits for the fine chemical industry. This study investigates the behavior of bubbles and bed expansion under low pressure conditions. It is found that lower pressure leads to larger bubbles, increased bubble quantity, and higher aspect ratio. The predictability is affected by the inhomogeneous fluidization, but low pressure fluidization can generate similar bubble sizes with lower fluidizing mass compared to atmospheric pressure.