Article
Polymer Science
Xiaochuan Chen, Xiaotong Wang, Changlin Cao, Zhongke Yuan, Dingshan Yu, Fei Li, Xudong Chen
Summary: By comparing microstructures and tribological properties of UHMWPE/PP blends processed by different extruders, we found that the elongational flow field in ERE promotes dispersion of PP in the UHMWPE matrix and interdiffusion of molecular chains between UHMWPE and PP. As the PP content increases, the wear mechanism of blends transitions from abrasive wear, fatigue wear, to adhesion wear as the dominant mechanism.
Article
Chemistry, Physical
Hongyu Liu, Mengxin Xie, Bingli Pan, Ning Li, Jinghao Zhang, Min Lu, Jie Luo, Honggang Wang
Summary: In this study, a novel lubricant additive hybridizing pyrolytic graphene and serpentine was developed to enhance the tribological performance of paraffin oil. The hybrid lubricant additive showed significant reduction in friction coefficient and wear loss compared to neat paraffin oil. The lubrication mechanism was further investigated using first-principles calculations.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Materials Science, Multidisciplinary
Julian Somberg, Gil Goncalves, Maria Soria Sanchez, Nazanin Emami
Summary: Chemically expanded graphite (CEG) has been identified as a promising reinforcement for up-scaling in polymer composites. Functionalized CEG, specifically silane and polydopamine, enhanced the interfacial compatibility of UHMWPE nanocomposites with improved mechanical properties and hydrophobicity. The addition of functionalized CEG also significantly reduced wear rates under water lubricated conditions, showing potential for tribological applications.
MATERIALS & DESIGN
(2022)
Article
Engineering, Mechanical
Tun Cai, Shengpeng Zhan, Tian Yang, Yinhua Li, Dan Jia, Jiesong Tu, Jian Li, Haitao Duan
Summary: UHMWPE-g-AA samples were prepared by ultraviolet-light-induced surface grafting, and their tribological properties in seawater were studied using ball-on-disk tribology experiments. The results show that the PAA lubricating brush layer improves the fluid medium at the friction surface/interface, reducing the friction coefficient and wear amount of the friction pair.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Kunpeng Wang, Huaichao Wu, Hongdong Wang, Yuhong Liu, Lv Yang, Limei Zhao
Summary: The study prepared molybdenum-dotted nanoplatelets using an aqueous miscible organic solvent treatment method, enhancing the specific surface area and dispersion of attapulgite. The nanoplatelets showed excellent tribological properties and self-repairing ability in an oil-based lubricant system.
Article
Engineering, Chemical
G. Mobarhan, A. Zolriasatein, M. Ghahari, M. Jalili, M. Rostami
Summary: This study synthesized spherical MoS2 nanoparticles with multiple nanosheets through the hydrothermal method and investigated the effect of nanoparticle concentration on wear properties. The results showed that nanoparticles with a thickness of 10 nm exhibited the best wear performance, reducing wear width and friction coefficient by about 50% at a concentration of only 0.05 wt-%.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Mohamed Zoubair Saidi, Chaouki El Moujahid, Andreea Pasc, Nadia Canilho, Clara Delgado-Sanchez, Alain Celzard, Vanessa Fierro, Richard Kouitat-Njiwa, Tarik Chafik
Summary: Researchers have successfully developed flower-shaped MoS2 nano-additives that enhance lubrication and wear resistance in wind turbine engine oil, reducing friction and wear, improving efficiency, and prolonging service life of mechanical devices.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Materials Science, Multidisciplinary
Annamaria Visco, Fabio Giudice, Eugenio Guglielmino, Cristina Scolaro, Andrea Sili
Summary: This study focused on the tribological contact between a titanium-aluminum-vanadium alloy pin and a sheet of ultra high molecular weight polyethylene. Tribometric tests revealed the specific wear rate under different lubrication conditions, and observed a compressive effect on the pin tip during the test campaign.
Article
Engineering, Mechanical
Meghashree Padhan, Umesh Marathe, Jayashree Bijwe
Summary: This study focuses on developing micro and nanocomposites of ultrahigh molecular weight polyethylene (UHMWPE) by incorporating carbide particles of titanium, silicon, tungsten, and zirconium, and evaluating their performance. The research finds that nanoscale carbide particles can enhance the wear resistance of UHMWPE, and nanocomposites outperform microcomposites in most properties.
Article
Materials Science, Multidisciplinary
J. Santos Garcia-Miranda, Luis Daniel Aguilera-Camacho, Maria Teresa Hernandez-Sierra, Karla J. Moreno
Summary: The research on eco-friendly lubricants is increasing due to their comparable performance to commercial mineral lubricants in combating environmental impact. This study analyzes the friction and wear performance of a castor/sesame oil mixture as an eco-friendly lubricant and compares it to a commercial mineral lubricant in a metallic bearing system, finding similar results.
Article
Chemistry, Multidisciplinary
Raimondas Kreivaitis, Milda Gumbyte, Arturas Kupcinskas, Jolanta Treinyte, Kiril Kazancev, Egle Sendzikiene
Summary: Lubrication is vital for reducing friction and wear, but traditional lubricants can cause pollution. This study proposes using coffee oil from spent coffee grounds to improve the lubricity of water-based lubricants. Bis(2-hydroxyethyl)ammonium oleate protic ionic liquid helps in dispersing coffee oil in water, enhancing its tribological properties.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Chemical
Cong Liu, Yanguo Yin, Congmin Li, Ming Xu, Rongrong Li, Qi Chen
Summary: Nano Bi particles were chemically modified to improve their dispersion and stability. The addition of modified nano Bi particles significantly improved the tribological properties of liquid paraffin oil.
Article
Engineering, Mechanical
Pranav Dev Srivyas, M. F. Wani, Rakesh Sehgal, Chandra Shekhar Singh Bisht, M. S. Charoo, Ankush Raina, Mir Irfan Ul Haq
Summary: The study suggests that the combination of graphene as a solid lubricant and surface texturing can effectively reduce friction and wear in hybrid aluminum composite and chromium plated chrome steel tribopairs. Textured surfaces consistently showed lower coefficient of friction and wear volume compared to non-textured surfaces under both dry sliding and lubricated conditions.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Subramaniam Shankar, M. Manikandan, G. Raja, G. Suganya Priyadharashini, Alokesh Pramanik
Summary: The study aims to improve the performance of Kapok oil by adding boric acid, finding that the lubricating effect of a mixture of Kapok oil and 5% boric acid is the best, which helps reduce the global demand for petroleum-based lubricants.
MICRO & NANO LETTERS
(2021)
Article
Materials Science, Composites
Besma Sidia, Walid Bensalah
Summary: The study focuses on the tribological and mechanical properties of the mollusk shell (MS)-ultrahigh molecular weight polyethylene (UHMWPE) biocomposite against stainless steel. Results show that the addition of MS particles enhances the mechanical properties of UHMWPE, while the biocomposite exhibits high tribological performance compared to pure UHMWPE in terms of specific wear rate and coefficient of friction. The correlation between mechanical and tribological properties is examined, with the coefficient of friction showing reasonable correlation with hardness, fracture strain, fracture strength, and Young's modulus of the MS-UHMWPE biocomposite.
POLYMER COMPOSITES
(2021)
Article
Thermodynamics
Samy Yousef, Justas Eimontas, Kestutis Zakarauskas, Nerijus Striugas
Summary: This study successfully upgraded wax into oil and increased the yield of flammable gases through the catalytic pyrolysis process using ZSM-5 zeolite catalyst. The addition of 50 wt.% of ZSM-5 catalyst resulted in the conversion of wax into a light hydrocarbon oil abundant in flammable compounds.
THERMOCHIMICA ACTA
(2022)
Article
Green & Sustainable Science & Technology
Samy Yousef, Justas Eimontas, Inga Stasiulaitiene, Kestutis Zakarauskas, Nerijus Stri
Summary: This study investigated the pyrolysis of surgical masks waste (WMs) as a mixture, aiming to recycle the waste materials and reduce environmental impacts. The results showed that pyrolysis at 500 degrees C achieved the highest oil yield with reduced greenhouse gas emissions. The study demonstrated the effectiveness of this method in reducing environmental impacts and improving economic performance.
SUSTAINABLE PRODUCTION AND CONSUMPTION
(2022)
Article
Chemistry, Multidisciplinary
Silvia Sfameni, Tim Lawnick, Giulia Rando, Annamaria Visco, Torsten Textor, Maria Rosaria Plutino
Summary: This research study presents the development of an efficient and eco-friendly method to create highly hydrophobic surfaces on cotton fabrics using modified silica sols. The treated cotton fabrics showed excellent water repellency and water-based stain resistance.
Article
Thermodynamics
Samy Yousef, Justas Eimontas, Nerijus Striugas, Marius Praspaliauskas, Mohammed Ali Abdelnaby
Summary: This research aims to study the catalytic pyrolysis of glass fibre-reinforced epoxy resin composites mixed with different fillers over zeolite catalyst. The experimental results show that the hybrid catalyst can significantly enhance the formation of aliphatic compounds and phenol compounds, reduce the energy required for decomposition, and demonstrate good consistency with increasing heating rates and addition of hybrid catalysts.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Chemistry, Physical
Consuelo Celesti, Daniela Iannazzo, Claudia Espro, Annamaria Visco, Laura Legnani, Lucia Veltri, Giuseppa Visalli, Angela Di Pietro, Paola Bottino, Maria Assunta Chiacchio
Summary: Hybrid hydrogels composed of chitosan (CS) have great potential in bone tissue engineering and regeneration. The addition of polyhedral oligomeric silsesquioxanes (POSS) has been shown to improve the properties of the hybrid composites. In this study, we investigated the effect of different concentrations of POSS on the properties of the final composites and found that the CS/POSS hydrogels have good biocompatibility and controlled drug release ability.
Article
Energy & Fuels
Samy Yousef, Vidas Lekavicius, Nerijus Striugas
Summary: During the COVID-19 pandemic, there was a significant increase in surgical mask waste (WM) in the EU region, and managing and recycling them became a challenge. This study analyzed the techno-economic viability of pyrolysis and gasification processes for converting WMs into pyrolysis oil and hydrogen-rich syngas. The results showed that gasification had higher economic performance compared to other methods, such as incineration and pyrolysis.
Article
Polymer Science
Cristina Scolaro, Leonarda Francesca Liotta, Carla Calabrese, Giuseppe Marci, Annamaria Visco
Summary: Formulations of environmentally compatible silicone-based antifouling have been characterized. The activity of these powders is linked to the nanometric size of the particles and the homogeneous dispersion of the metal on the substrate. The presence of silver and titania antifouling filler improves the adhesion and compactness of the coating.
Article
Chemistry, Multidisciplinary
Annamaria Visco, Gabriella Epasto, Fabio Giudice, Cristina Scolaro, Andrea Sili
Summary: Debris formation is crucial for determining the lifespan of prosthetic joints. Potential errors can arise when measuring mass loss due to small values involved and absorption of humidity in the specimen. Accurate cleaning and drying processes can minimize these errors.
APPLIED SCIENCES-BASEL
(2023)
Article
Polymer Science
Stephen Rimmer, Paul Spencer, Davide Nocita, John Sweeney, Marcus Harrison, Thomas Swift
Summary: Functional crosslinked hydrogels were prepared by incorporating acrylic acid monomer both via copolymerization and chain extension into the crosslinked polymer gel. The addition of acrylic acid weakened the crosslinked network. Hydrogels made from HEMA, EGDMA, and a branching RAFT agent provided loose-chain end functionality for subsequent chain extension. Branching RAFT comonomers acted as versatile anchor sites for additional polymerization chain extension reactions. Acrylic acid grafted onto HEMA-EGDMA hydrogels showed higher mechanical strength and functionality as an electrostatic binder of cationic flocculants compared to equivalent copolymer networks.
Review
Environmental Sciences
Valentina Beghetto, Vanessa Gatto, Riccardo Samiolo, Cristina Scolaro, Salim Brahimi, Manuela Facchin, Annamaria Visco
Summary: The article provides an overview of EU policies, directives, regulations, and laws related to polymers and plastic manufacturing to reduce plastic pollution and understand the socio-economic implications of environmental concerns and protection.
ENVIRONMENTAL POLLUTION
(2023)
Article
Chemistry, Analytical
Samy Yousef, Justas Eimontas, K. estutis Zakarauskas, Nerijus Striu
Summary: This research aims to recover styrene and glass fibre (GF) from end-of-life wind turbine blades (WTBs). Conversion experiments were carried out at different pyrolysis temperatures, and the optimal temperature for decomposition of UPR fragments while maintaining the morphology of the recovered GF was determined. The results showed that styrene was the major compound in the oil product and CO2 was the main gas in the gaseous product.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Analytical
Samy Yousef, Justas Eimontas, Kestutis Zakarauskas, Nerijus Striugas
Summary: This research aims to recover triacetin from cigarette butts using pyrolysis treatment and demonstrates the high potential of the pyrolysis process in disposing of cigarette butts and recovering triacetin.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Multidisciplinary
Samy Yousef, Andrius Tonkonogovas, Alaa Mohamed
Summary: This study investigates the effect of different porous structures and a polyester support layer on the gas permeation and selectivity of polysulfone membranes. The results show that the finger-like pore structure exhibits better selectivity, making it suitable for hydrogen separation industry.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Polymer Science
Silvia Sfameni, Tim Lawnick, Giulia Rando, Annamaria Visco, Torsten Textor, Maria Rosaria Plutino
Summary: Polyester fibers have wide applications due to their durability, strength, and flexibility. However, they have limitations in dyeability, coating adhesion, hydrophilicity, and wettability compared to natural fibers. In this work, a sustainable approach using non-fluorinated coatings was developed to improve the surface properties of polyester fabrics. The fabrics were treated with a water-based superhydrophobic finishing using (3-glycidyloxypropyl)trimethoxysilane (GPTMS) and long alkyl-chain alkoxysilanes. The finished fabrics showed high water-based stain resistance and good hydrophobicity even after multiple cycles of abrasion.
Article
Chemistry, Physical
Samy Yousef, Justas Eimontas, Nerijus Striugas, Alaa Mohamed, Mohammed Ali Abdelnaby
Summary: This research focuses on utilizing a pyrolysis process to maximize the extraction of benzoic acid from PET nonwoven fabric waste. The results demonstrate that PET fabric is highly volatile and can be completely degraded at 490 degrees Celsius. By applying pyrolysis treatment, the abundance of benzoic acid extracted from PET fabric waste can be increased by 134%.
Article
Materials Science, Biomaterials
Mohammadreza Kasravi, Alireza Yaghoobi, Tahereh Tayebi, Mahsa Hojabri, Abdolkarim Talebi Taheri, Fatemeh Shirzad, Bahram Jambar Nooshin, Radman Mazloomnejad, Armin Ahmadi, Fatemeh A. Tehrani, Ghasem Yazdanpanah, Mohammad Hadi Farjoo, Hassan Niknejad
Summary: As a promising approach in translational medicine, the decellularization of discarded livers to produce bioscaffolds that support recellularization has potential in overcoming the limitations of conventional liver transplantation. In this study, the researchers investigated the use of matrix metalloproteinase (MMP) inhibition to preserve the extracellular matrix (ECM) during liver decellularization. The results demonstrated that the application of an MMP inhibitor significantly improved the preservation of ECM components and mechanical properties of the bioscaffolds, which supported cell viability and function in vitro. The study also confirmed that the MMP inhibition led to the inhibition of MMP2 and MMP9, providing a novel method to enhance ECM preservation during liver decellularization.
BIOMATERIALS ADVANCES
(2024)
Article
Materials Science, Biomaterials
Mohammadsadegh Nadimifar, Weiguang Jin, Clara Coll-Satue, Gizem Bor, Paul Joseph Kempen, Ali Akbar Moosavi-Movahedi, Leticia Hosta-Rigau
Summary: This study presents a metal-phenolic self-assembly approach that can prepare nanoparticles fully made of hemoglobin. The nanoparticles exhibit good oxygen binding and releasing capabilities.
BIOMATERIALS ADVANCES
(2024)
Article
Materials Science, Biomaterials
Jyoti Kumari, Roel Hammink, Jochem Baaij, Frank A. D. T. G. Wagener, Paul H. J. Kouwer
Summary: Fibrosis is the formation of fibrous connective tissue in response to injury, leading to organ dysfunction. A novel hybrid hydrogel combining synthetic polyisocyanide with hyaluronic acid has been developed, showing strong antifibrotic properties.
BIOMATERIALS ADVANCES
(2024)
Letter
Materials Science, Biomaterials
Melissa Machado Rodrigues, Cristian Padilha Fontoura, Charlene Silvestrin Celi Garcia, Sandro Tomaz Martins, Joao Antonio Pegas Henriques, Carlos Alejandro Figueroa, Mariana Roesch Ely, Cesar Aguzzoli
BIOMATERIALS ADVANCES
(2024)
Article
Materials Science, Biomaterials
Jessica Polak, David Sachs, Nino Scherrer, Adrian Suess, Huan Liu, Mitchell Levesque, Sabine Werner, Edoardo Mazza, Gaetana Restivo, Mirko Meboldt, Costanza Giampietro
Summary: Human skin equivalents (HSEs) play a crucial role in tissue engineering. This study introduces a 3D-printed culture insert to apply a static radial constraint on HSEs and examines its effects on tissue characteristics. The results show that the diameter of the culture insert significantly influences tissue contraction, fibroblast and matrix organization, keratinocyte differentiation, epidermal stratification, and basement membrane formation. This study provides important insights for the design of skin tissue engineering.
BIOMATERIALS ADVANCES
(2024)
Review
Materials Science, Biomaterials
Shiliang Chen, Tianming Du, Hanbing Zhang, Jing Qi, Yanping Zhang, Yongliang Mu, Aike Qiao
Summary: This paper reviewed the primary methods for improving the overall properties of biodegradable zinc stents. It discussed the mechanical properties, degradation behavior, and biocompatibility of various improvement strategies. Alloying was found to be the most common, simple, and effective method for improving mechanical properties. Deformation processing and surface modification further improved the mechanical properties and biological activity of zinc alloys. Meanwhile, structural design could endow stents with special properties. Manufacturing zinc alloys with excellent properties and exploring their interaction mechanism with the human body are areas for future research.
BIOMATERIALS ADVANCES
(2024)
