Article
Engineering, Chemical
Elshan Bonyadi, Ali Sallakh Niknejad, Farzin Zokaee Ashtiani, Saeed Bazgir, Ali Kargari
Summary: A novel porous polycarbonate (PC) membrane was fabricated using an immersion-precipitation process, and the hydrophobicity was enhanced by spraying polystyrene (PS) microbeads on the PC support using an air-assisted electrospraying process. The PS/PC membrane exhibited outstanding wetting resistance and improved performance in direct contact membrane distillation (DCMD) evaluation.
Article
Engineering, Chemical
Konstantin V. Pochivalov, Andrey V. Basko, Tatyana N. Lebedeva, Anna N. Ilyasova, Sabir S. Guseinov, Yaroslav V. Kudryavtsev
Summary: The thermally-induced phase separation of polyamide 12-benzyl alcohol mixtures can be used to prepare 3D printing powders without the use of highly toxic substances. The parameters of the obtained powder have been analyzed and studied experimentally.
Article
Chemistry, Analytical
William de Rezende Locatel, Chetna Mohabeer, Dorothee Laurenti, Yves Schuurman, Nolven Guilhaume
Summary: This paper investigates the catalytic co-pyrolysis of beech wood and polyamide-6 to examine the effects of polyamide-6 concentration on the bio-oil properties and catalyst performance. The results show that increasing polyamide-6 concentration leads to higher average molar mass and nitrogen content in the bio-oils, while reducing the production of fully deoxygenated compounds. Synergistic effects are observed in the co-pyrolysis process.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Polymer Science
Min-Kyeom Kim, Hyung-Ick Kim, Jae-Do Nam, Jonghwan Suhr
Summary: This study systematically explores the toughening mechanism of thermoplastic polymer particle materials and ways to overcome the typical compromise in energy-absorbing composites through modeling and experimental research. The main energy-absorbing mechanism was found to be matrix yielding, which results from particle debonding and significantly contributes to crack propagation.
Article
Polymer Science
Lan Guo, Yunsheng Xu, Xianming Zhang, Guo-Hua Hu
Summary: Nanoparticles are used to compatibilize immiscible polymer blends. Silica nanoparticles (SiO2) were used in this study to compatibilize polyamide 6 (PA6)/polycarbonate (PC) blends. The localization of SiO2 at the interfaces between PA6 and PC was achieved through grafting a methacrylic monomer onto SiO2 and copolymerizing it with styrene (St) and 3-isopropenyl-alpha,alpha'-dimethylbenzyl isocyanate (TMI). The presence of SiO2-PST significantly decreased the PC domain diameter and improved the mechanical properties of the PA6/PC blend.
Article
Chemistry, Physical
Ruma Gupta, J. Gamare, M. Sahu, K. Pandey, Santosh K. Gupta
Summary: Nuclear energy is considered a potential alternative for global energy needs, and the study synthesized uranium type (IV) deep eutectic solvent (UT4D) for the first time, showing stability and physical properties at an optimum mole fraction of 0.2:0.8 for UNH: Urea. The formation of deep eutectic solvent (DES) was confirmed using various analytical techniques, and the electrochemical investigation suggested the stabilization of uranium ions in U(V) state in the DES.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
Zi-Xun Chen, Ze-Yong Zhao, Peng Lu, Xiang-Xin Xiao, Shuang He, Cong Deng, Yu-Zhong Wang
Summary: In this study, a sulfonate-group-containing polyamide SK was synthesized and utilized as a functional agent for polycarbonate (PC). The addition of 1.0 wt% SK significantly improved the fire safety of PC, while maintaining its transparency. The excellent flame retardancy was attributed to the synergistic effect of SK-caused physical cross-linking and carbonization, and the high transparency was attributed to the amorphous nature of SK and its good compatibility with PC.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Analytical
William de Rezende Locatel, Chetna Mohabeer, Dorothee Laurenti, Yves Schuurman, Nolven Guilhaume
Summary: This study investigated the pyrolysis process of pure beech wood and a mixture of beech wood and polyamide-6, and found that the presence of polyamide-6 affected the properties and composition of the bio-oils produced. The use of a catalyst showed beneficial effects on pure beech wood, but these effects were mitigated with the mixture of beech wood and polyamide-6.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Multidisciplinary Sciences
Siyao Li, Ruijiao Dong, Valentina-Elena Musteata, Jihoon Kim, Neel D. Rangnekar, J. R. Johnson, Bennett D. Marshall, Stefan Chisca, Jia Xu, Scott Hoy, Benjamin A. McCool, Suzana P. Nunes, Zhiwei Jiang, Andrew G. Livingston
Summary: Hydrophobic polyamide nanofilms can transport hydrophobic liquids faster than conventional membranes and exhibit higher permeance in light crude oil fractionation.
Review
Agricultural Engineering
Petter Paulsen Thoresen, Heiko Lange, Ulrika Rova, Paul Christakopoulos, Leonidas Matsakas
Summary: This article discusses the importance of solvent systems in biomass fractionation, emphasizing the need for understanding chemical structures and mechanisms to choose appropriate solvents.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Chemical
Siyan Wang, Zhenggong Wang, Shouwen Zhu, Shuqi Liu, Feng Zhang, Jian Jin
Summary: Membranes with high stability and selectivity are needed for efficient chemical separations in harsh solvents. In this study, a thin-film composite polyamide membrane for organic solvent nanofiltration (OSN) was fabricated using an adamantane diamine as a building block. The bulky adamantane structure inhibited polymer chain packing, creating interconnected micropores in the polyamide layer. The membrane exhibited high methanol permeance and retention of organic dye molecules, as well as stability in different organic solvents. This approach improves membrane permeability and solvent resistance without compromising selectivity.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Kevin Roger, Nataliya Shcherbakova, Lison Raynal
Summary: The addition of a non-solvent to a solute in good solvent solution leads to nanoprecipitation, but increasing solute concentration leads to macrodomain formation and bulk phase separation. The Ouzo boundary, which marks the maximum solute concentration leading to nanoobjects, results from the coupling of nanoprecipitation and mixing. Increasing solute concentration speeds up nanoprecipitation and requires faster mixing times to uncouple both processes. Implementing rapid mixing strategies in continuous flow approaches is the key to overcome the Ouzo effect.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Astronomy & Astrophysics
Michael Thies
Summary: This paper reconsiders the two-flavor version of the massive chiral Gross-Neveu model in 1+1 dimensions and explores its phase diagram. By adding the missing tricritical curves and using fourth-order almost degenerate perturbation theory, the parameter range of the phase diagram is accurately determined.
Article
Physics, Fluids & Plasmas
N. C. Priyanka, Atul Kumar Verma
Summary: Inspired by vehicular traffic phenomena, this study investigates a three-lane open totally asymmetric simple exclusion process with both-sided lane switching accompanied by Langmuir kinetics. Phase diagrams, density profiles, and phase transitions are calculated using mean-field theory and successfully validated with Monte Carlo simulation results. The topology of the phase diagrams is found to depend crucially on the coupling strength, which represents the ratio of lane-switching rates. The proposed model exhibits unique mixed phases, including a double shock resulting in bulk-induced phase transitions. The interplay between both-sided coupling, third lane, and Langmuir kinetics leads to unusual features, including a reentrance transition in two directions for nominal values of coupling strength. The presence of reentrance transition and peculiar phase boundaries results in a rare type of phase division where one phase lies entirely within another region. Moreover, the dynamics of shocks and finite-size effects are examined through the analysis of four different types of shocks.
Article
Nanoscience & Nanotechnology
Hukang Guo, Fupeng Li, Xuerong Shui, Jianyu Wang, Chuanjie Fang, Liping Zhu
Summary: Organic solvent nanofiltration (OSN) technology has great potential in achieving low-carbon separation applications, with reduced energy consumption by almost 90%. Ultrathin polyamide nanofilms with controlled microporosity and morphology were synthesized via a molecular layer deposition method, and displayed highly superior separation performance compared to current counterparts.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Bidhya Kunwar, Sriraam R. Chandrasekaran, Bryan R. Moser, Jennifer Deluhery, Pyoungchung Kim, Nandakishore Rajagopalan, Brajendra K. Sharma
Article
Engineering, Environmental
Sumant Avasarala, Peter C. Lichtner, Abdul-Mehdi S. Ali, Ricardo Gonzalez-Pinzon, Johanna M. Blake, Jose M. Cerrato
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2017)
Article
Engineering, Chemical
S. M. Al-Salem, Brajendra K. Sharma, A. R. Khan, J. C. Arnold, S. M. Alston, Sriraam R. Chandrasekaran, A. T. Al-Dhafeeri
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2017)
Article
Chemistry, Analytical
Johanna M. Blake, Cherie L. De Vore, Sumant Avasarala, Abdul-Mehdi Ali, Claudia Roldan, Fenton Bowers, Michael N. Spilde, Kateryna Artyushkova, Matthew F. Kirk, Eric Peterson, Lucia Rodriguez-Freire, Jose M. Cerrato
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2017)
Article
Polymer Science
S. M. Al-Salem, A. Bumajdad, A. R. Khan, Brajendra K. Sharma, S. R. Chandrasekaran, F. A. Al-Turki, F. H. Jassem, A. T. Al-Dhafeeri
JOURNAL OF POLYMER RESEARCH
(2018)
Article
Toxicology
Katherine E. Zychowski, Vamsi Kodali, Molly Harmon, Christina R. Tyler, Bethany Sanchez, Yoselin Ordonez Suarez, Guy Herbert, Abigail Wheeler, Sumant Avasarala, Jose M. Cerrato, Nitesh K. Kunda, Pavan Muttil, Chris Shuey, Adrian Brearley, Abdul-Mehdi Ali, Yan Lin, Mohammad Shoeb, Aaron Erdely, Matthew J. Campen
TOXICOLOGICAL SCIENCES
(2018)
Article
Engineering, Environmental
Pralay Gayen, Jason Spataro, Sumant Avasarala, Abdul-Mehdi Ali, Jose M. Cerrato, Brian P. Chaplin
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2018)
Article
Cardiac & Cardiovascular Systems
Katherine E. Zychowski, Abigail Wheeler, Bethany Sanchez, Molly Harmon, Christina R. Steadman Tyler, Guy Herbert, Selita N. Lucas, Abdul-Mehdi Ali, Sumant Avasarala, Nitesh Kunda, Paul Robinson, Pavan Muttil, Jose M. Cerrato, Barry Bleske, Olga Smirnova, Matthew J. Campen
CARDIOVASCULAR TOXICOLOGY
(2019)
Article
Geochemistry & Geophysics
Johanna M. Blake, Sumant Avasarala, Abdul-Mehdi S. Ali, Michael Spilde, Juan S. Lezama-Pacheco, Drew Latta, Kateryna Artyushkova, Anastasia G. Ilgeng, Christopher Shuey, Christopher Nez, Jose M. Cerrato
Article
Geochemistry & Geophysics
Sumant Avasarala, Chris Torres, Abdul-Mehdi S. Ali, Bruce M. Thomson, Michael N. Spilde, Eric J. Peterson, Kateryna Artyushkova, Elena Dobrica, Juan S. Lezama-Pacheco, Jose M. Cerrato
Article
Geochemistry & Geophysics
Sumant Avasarala, Adrian J. Brearley, Michael Spilde, Eric Peterson, Ying-Bing Jiang, Angelica Benavidez, Jose M. Cerrato
Article
Environmental Sciences
E. A. Parker, S. B. Grant, Y. Cao, M. A. Rippy, K. J. McGuire, P. A. Holden, M. Feraud, S. Avasarala, H. Liu, W. C. Hung, M. Rugh, J. Jay, J. Peng, S. Shao, D. Li
Summary: This study explores the use of unsteady transit time distribution theory in modeling solute transport in biofilters and demonstrates its accuracy in reproducing breakthrough concentrations. The research shows that more than half of the water in storage at any given time is from the most recent storm, while the rest is a mixture of earlier storms.
WATER RESOURCES RESEARCH
(2021)
Article
Environmental Sciences
Suresh Raja, Sriraam R. Chandrasekaran, Lin Lin, Xiaoyan Xia, Philip K. Hopke, Kalliat T. Valsaraj
AEROSOL AND AIR QUALITY RESEARCH
(2017)