Article
Polymer Science
Feng Gao, Dandan Chen, Tianyu Liu, Jinyao Chen, Jian Kang, Ruizhang Xu, Ya Cao, Ming Xiang
Summary: The pore size of the support layer significantly influences the properties of the selective layer and overall membrane performance, affecting the diffusion behavior of aqueous monomers, selective layer morphologies, and membrane performances. Different pore sizes of the support layer result in variations in thickness and roughness of the PA layer, leading to differences in membrane performance. Anti-backflush experiments provide insights into the interfacial adhesion between the support layer and selective layer.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Engineering, Chemical
Shuqi Liu, Zhenggong Wang, Lu Zhao, Wangxi Fang, Feng Zhang, Jian Jin
Summary: This study utilized Troger's base (TB) to regulate the interfacial polymerization between trimesoyl chloride (TMC) and piperazine (PIP), resulting in the formation of a polyamide layer with extremely thin thickness. By increasing the TB content, the thickness of the polyamide layer can be controlled, leading to the fabrication of highly permeable and salt-rejecting thin film composite (TFC) membranes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Xinyu Fu, Jianqiang Wang, Yingyao He, Yanli Ji, Qiuyan Bi, Xiao Wang, Fu Liu
Summary: A nanofiltration membrane with an asymmetric polyamide dual-layer was prepared by interfacial polymerization. The thin and dense top polyamide layer enabled high water permeability and Na2SO4 rejection performance, while the thick and porous bottom polyamide layer guaranteed membrane stability. This study offers a promising strategy for fabricating polyamide composite membranes with enhanced separation performance.
Article
Engineering, Chemical
Xianglei Han, Yao Wang, Zhi Wang, Xu Li, Yingying Liu, Chong Wang, Fangzheng Yan, Jixiao Wang
Summary: The designable evolutionary strategy named interfacial polymerization plus successfully constructs a reverse osmosis membrane with high permselectivity and durability, improving chlorine-resistant and antifouling properties.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Thermodynamics
Yoshitaka Ueki, Yuta Tsutsumi, Masahiko Shibahara
Summary: In this study, classical molecular dynamics simulations were used to numerically investigate the behavior of nanoscale H2O droplets during cooling and ice formation, revealing the patterns of time-varying interfacial thermal resistance and density depletion length.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Materials Science, Multidisciplinary
Kayode Hassan Lasisi, Kaisong Zhang
Summary: A polyamine-based TFC NF membrane was synthesized by retarding the IP process with pyromellitic acid. The PMA-adjusted membrane exhibited high water permeability, good hydrophilicity, pressure resistance, long-term filtration stability, and impressive fouling resistance. This study provides a more feasible way of designing polyamine-based NF membranes for water reuse and nitric acid-generating wastewater treatment.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Zhiyu Chang, Yujuan Wu, Tateoki Iizuka, Qiao Lan, Liming Peng, Wenjiang Ding
Summary: This study investigated the microstructural and interfacial characteristics of Al18B4O33w reinforced Mg10Gd-3Y-1Zn-0.4Zr alloy matrix composite under different heat treatment conditions. Results showed significant changes in interplanar spacing and interface layers with increasing heating time, leading to severe degradation of the whiskers.
MATERIALS CHARACTERIZATION
(2021)
Article
Engineering, Chemical
Ines Nulens, Adi Ben Zvi, Ivo F. J. Vankelecom, Guy Z. Ramon
Summary: The article proposes a method that links synthesis and morphology to study the relationship of thin-film polyamide selective layers prepared via interfacial polymerization (IP), focusing on the interfacial stability of the system and the morphological shift of the film. By analyzing the correlation between PA morphology and the defined parameter space, a better understanding of the physical phenomena and potential issues in the IP process can be achieved.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Simin Yang, Jianqiang Wang, Yang Wang, Yajie Ding, Weilin Zhang, Fu Liu
Summary: A novel emulsion mediated interfacial polymerization strategy for controllable polyamide nanofiltration fabrication was proposed, allowing for controlled reaction by adjusting the reaction time. The use of PTFE membrane in the interfacial polymerization strategy resulted in smoother and thinner polyamide layer compared to conventional methods, while maintaining comparable nanofiltration performances.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Tomoki Matsuda, Hironobu Adachi, Ryo Yoshida, Tomokazu Sano, Hisashi Hori, Akio Hirose
Summary: The study indicates that during linear friction welding, short-term friction in the interfacial reaction layer leads to the formation of metastable Al-Fe intermetallic compounds and Al-Mg-Cr compounds, while long-term friction results in the formation of a fragile boundary, suggesting differences in the formation process of the layer.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Minh-Xuan Pham, Thu Minh Le, Thien Trong Tran, Huynh Ky Phuong Ha, Mai Thanh Phong, Van-Huy Nguyen, Le-Hai Tran
Summary: A polyamide thin-film composite (PA-TFC) membrane was fabricated for pervaporation separation of NaCl and As(v) aqueous solution, showing rejection rates of over 99.9% for both components. The permeation flux was found to be influenced by the chemical structure of the amines, with the PIP-TMC membrane exhibiting the best performance.
Article
Chemistry, Multidisciplinary
Marco Rocca, Maxime Dufresne, Marie Salva, Christof M. Niemeyer, Emmanuel Delamarche
Summary: A new method is introduced for in situ formation of hydrogels with precise geometries using interfacial polymerization in a sealed microfluidic chip. The characteristics of the hydrogel can be easily adjusted, the method is fast and does not require specific laboratory equipment.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Chemical
Jingguo She, Haifu Gao, Ziping Song, Le Shi, Sihua Liu, Jiahui Li, Xiaolong Lu, Chunrui Wu
Summary: This paper reports a nanofiltration membrane (NFM) with improved uniformity and dually charged separation layer, formed on a properly modified poly(vinyl chloride) (PVC) substrate by N-methylglucamine (NMG) molecules. The effect of NMG grafting on the structure and performance of PVC UF membranes and NFMs was studied. The results showed that the appropriate grafting of NMG molecules significantly improved the hydrophilicity of PVC UF membrane and enabled the formation of uniform and defect-free dually charged polyamide separation layer.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yuan Liu, Wanyu Zhao, Zhenghui Pan, Zhengqing Fan, Meng Zhang, Xiaoli Zhao, Jianping Chen, Xiaowei Yang
Summary: To solve the problems faced by magnesium metal anodes, researchers have constructed a benign coordination layer at the magnesium/electrolyte interface using aniline with a strong affinity for magnesium and high stability. This coordination layer mitigates side reactions, resulting in a non-passivating interface and achieving low overpotential and uniform magnesium deposition.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Thermodynamics
Kadeem Dennis, Kamran Siddiqui
Summary: This research study investigated the three-dimensional nature and characteristics of buoyant thermals in the mixed convection turbulent boundary layer, developing a robust algorithm for automatic thermal detection. Results suggest the presence of convective cell-like patterns at high Richardson numbers, with thermal interactions exhibiting substantially different motion from the surrounding turbulent boundary layer flow.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2021)
Article
Energy & Fuels
Afsaneh Fakhar, Morteza Sadeghi, Mohammad Dinari, Rob Lammertink
Summary: The present study investigated the use of poly(urethane urea)s membranes with aromatic and aliphatic side chains of different sizes for the separation of higher hydrocarbons from methane. The results indicated that the membranes with bulkier or longer side chains exhibited enhanced phase separation, lower glass transition temperature, and higher gas permeability. The fractional free volume (FFV) was found to be a significant factor in controlling gas separation, and its trend reversed when the size of side chains increased. The membranes with the longest side chain achieved the highest permeability and selectivity.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Chemical
Shuyana A. Heredia Deba, Bas A. Wols, Doekle R. Yntema, Rob G. H. Lammertink
Summary: This study investigates the synergistic effect of photocatalytic oxidation and membrane filtration using a photocatalytic membrane. The results show that the photocatalytic membrane effectively discolors methylene blue and exhibits a potential synergy between membrane retention and photocatalytic conversion at the membrane surface.
CHEMICAL ENGINEERING SCIENCE
(2022)
Correction
Engineering, Chemical
Shuyana A. Heredia Deba, Bas A. Wols, Doekle R. Yntema, Rob G. H. Lammertink
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Engineering, Chemical
Moritz A. Junker, Wiebe M. de Vos, Joris de Grooth, Rob G. H. Lammertink
Summary: A novel method of making nanofiltration membranes is to use the Layer-by-Layer method, which involves coating polyelectrolytes alternately on a porous ultrafiltration membrane to form a controllable nanometer-thin separation layer known as Polyelectrolyte Multilayer (PEM). Understanding the structural properties of PEMs and their relationship to coating conditions and membrane performance is crucial for membrane optimization. In this study, the separation performance of NF PEM membranes based on different polymer systems (PDADMAC/PSS and PAH/PAA) was investigated by analyzing the structure of the membrane, particularly the pore size distribution.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Farzaneh Radmanesh, Gerrald Bargeman, Nieck E. Benes
Summary: In this study, cyclomatrix polyphosphazene membranes were synthesized through interfacial polymerization on alumina or polyacrylonitrile supports. The potential of alumina-supported thin film composite membranes as organic solvent nanofiltration membranes was confirmed. The resulting membranes showed high rejection rates for methylene blue in various solvents. A polyacrylonitrile-supported membrane was also prepared, showing higher permeance and lower rejection due to the presence of pinholes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Burak Akdeniz, Jeffery A. Wood, Rob G. H. Lammertink
Summary: Chemically induced transport methods provide new opportunities for colloidal transport in dead-end channel geometries. Diffusiophoresis, which involves particle movement under an electrolyte concentration gradient, has been previously demonstrated in such channels. This study shows that concentration-dependent zeta potentials are necessary for accurately describing particle transport in dead-end channels when the zeta potential strongly depends on electrolyte concentration. Simulations incorporating concentration-dependent zeta potentials match experimental observations, while simulations using constant zeta potentials fail to capture particle dynamics. These findings contribute to a better understanding of diffusiophoresis and the diffusio-osmosis process.
Article
Chemistry, Physical
Thejas Hulikal Chakrapani, Hanieh Bazyar, Rob G. H. Lammertink, Stefan Luding, Wouter K. den Otter
Summary: Darcy's law describes the flow of Newtonian fluids through porous media, while Brinkman extended it by adding a viscous stress term. The validity and value of Brinkman's term have been debated since its introduction.
Article
Chemistry, Multidisciplinary
Farzaneh Radmanesh, Ernst J. R. Sudholter, Alberto Tena, Maria G. Elshof, Nieck E. Benes
Summary: An interfacial polymerization process is used to fabricate thermally stable cyclomatrix poly(phenoxy)phosphazenes thin-film composite membranes for hydrogen separation from hot gas mixtures. These membranes have high selectivity for hydrogen over nitrogen and methane, with hydrogen permeances in the order of (10(-8)-10(-7) mol m(-2)s(-1)Pa(-1)) at temperatures up to 260 degrees C. They also maintain their performance even after exposure to 450 degrees C, making them suitable for industrial membrane gas separations at elevated temperatures.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Engineering, Chemical
Shuyana A. Heredia Deba, Bas A. Wols, Doekle R. Yntema, Rob G. H. Lammertink
Summary: Membranes with different TiO2 top layer thicknesses were fabricated and characterized. The optimal photocatalyst thickness was found to be 2.74 μm for single-layer membranes, while an increase in degradation was observed for membranes with multiple TiO2 layers. A mass transport and reaction model was developed to describe the coating thickness effect.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Shuyana A. Heredia Deba, Bas A. Wols, Doekle R. Yntema, Rob G. H. Lammertink
Summary: The impact of UV light intensity and distribution on the semiconductor surface during the degradation of organic compounds in water was studied using a mono and a multi-LED lamp. The electromagnetic radiation profile on the surface of the membrane was scanned and evaluated. Comparing two lamp configurations, a 20% higher degradation was achieved with the most homogeneous light distribution. The surface reaction constant increased linearly with the irradiation intensity for the most homogeneous illumination distribution.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Farzaneh Radmanesh, Alberto Tena, Ernst J. R. Sudholter, Mark A. Hempenius, Nieck E. Benes
Summary: A series of cyclomatrix polyphosphazene films were prepared using nonaqueous interfacial polymerization method. The molecular structure and permselective properties of the films can be controlled by adjusting the amount of dissolved potassium hydroxide. The films showed excellent barrier properties and exhibited molecular sieving behavior with high hydrogen permselectivities.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Education & Educational Research
Linlin Pei, Cindy Poortman, Kim Schildkamp, Nieck Benes
Summary: Universities are renewing their interest in blended learning to prepare for post-COVID education. The quality of blended learning is hindered by unsatisfactory social interactions, despite its potential for flexible and personalized learning. Creating a sense of community among students is essential, and to do so, it is crucial to understand their experiences and perceptions. Through a qualitative case study, we found that group learning activities, non-academic and extracurricular activities, and the physical campus as a social space contribute to the sense of community. However, there are obstacles such as difficulties in managing group dynamics and a persistent student-teacher authority dynamic that strain the relationship. Digital tools also have limitations in promoting a sense of community, as students question their value for in-depth conversations. Practical recommendations for developing a sense of community in blended learning are provided based on these findings.
EDUCATION AND INFORMATION TECHNOLOGIES
(2023)
Article
Engineering, Chemical
Moritz A. Junker, Esra te Brinke, Clara M. Vall Compte, Rob G. H. Lammertink, Joris de Grooth, Wiebe M. de Vos
Summary: Polyelectrolyte multilayers (PEMs) show promise as selective layers in nanofiltration (NF) due to their simplicity, controlled layer thickness, and versatility. Combining two different PEMs in an asymmetric structure allows further optimization. This study combines experimental filtration and theoretical models to describe the effective structure of an asymmetric PEM made of PAH/PSS and PAH/PAA. The obtained membrane properties suggest a distinct layer structure, and there is a fundamental difference in the retention of salt and polyethylene glycol molecules, attributed to different exclusion mechanisms.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Sam B. Rutten, Moritz A. Junker, Lucia Hernandez Leal, Wiebe M. de Vos, Rob G. H. Lammertink, Joris de Grooth
Summary: Nanofiltration (NF) is a promising technology for treating water sources with increasing micropollutant (MP) concentrations. Understanding the influence of solution composition on filtration performance is important. This study investigated the impact of dominant salts on the removal of trace MPs by commercial hollow fiber NF membranes. The presence of a dominant salt significantly altered MP transport behavior, with a higher mobility of MPs observed in the dNF80 membrane.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Meryll Barraco, Sylvie Neyertz, Nieck E. E. Benes, David Brown
Summary: This work compares eight classical H2 molecular models based on Lennard-Jones potentials in terms of their applicability in the gas phase. The two-site and one-site models perform well over a wide range of conditions and offer a good compromise between realism, simplicity, and computational efficiency.
JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
