Article
Polymer Science
Jung Bin Park, Seok Hwan An, Jae Woong Jung, Jea Uk Lee
Summary: In recent years, 3D printing has become more popular due to advancements in technology and cost-effectiveness. One specific type of 3D printing technology is fused deposition modeling, which allows for the creation of various products or prototypes using polymer filaments. This study focuses on enhancing the functionality of 3D printed objects made from recycled polymer materials by introducing an activated carbon coating. The activated carbon coating provides additional features such as adsorption of harmful gases and antimicrobial properties, resulting in the production of a functional gas mask.
Article
Nanoscience & Nanotechnology
Ilana Perelshtein, Itsik Levi, Nina Perkas, Avi Pollak, Aharon Gedanken
Summary: The demand for improved indoor air quality, especially during the Covid-19 pandemic, has led to a renewed interest in antiviral and antibacterial air-conditioning systems. In this study, air filters made of nonwoven polyester filter media were coated with CuO nanoparticles by a roll-to-roll coating method. The coated filters showed good stability and mechanical properties, as well as potent activity against various bacteria and viruses. The filtering properties of the coated filters were similar to those of the uncoated filters, and the coating remained stable even under airflow conditions.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Biophysics
Xin Yang, Qiang Wang, Yinchang Zhang, Huazheng He, Shouliang Xiong, Pingbo Chen, Congming Li, Lei Wang, Guohai Lu, Yaozeng Xu
Summary: In this study, a simply immersing method was used to fabricate dual-functional PEEK with antibacterial properties and enhanced bone integration. The modified PEEK demonstrated favorable biosafety, accelerated cell adhesion, and distribution, as well as wide antibacterial capabilities. The PEEK-PDA-Mn/Ag composite showed antibacterial and osseointegration-enhancing abilities in vivo.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Review
Biochemistry & Molecular Biology
Turkan Kopac
Summary: Proteins are diverse biopolymers that participate in almost all processes in living cells. When nanoparticles interact with proteins, they form a protein corona layer, which influences their interactions. The characteristics of nanoparticles such as size, surface chemistry, and charge play a critical role in determining the behavior of the protein corona.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Physical
Limin Qu, Xiangzhou Li, Jun Zhou, Kairui Cao, Qiuen Xie, Peng Zhou, Wei Qian, Yanhong Yang
Summary: This study developed a dual-functional coating with antibacterial and antifouling properties to combat biofilm infections on implants. The coating effectively inhibited bacterial growth and biofilm formation, and showed favorable biocompatibility.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Applied
Romain Vian, Hamideh Salehi, Marion Lapierre, Frederic Cuisinier, Vincent Cavailles, Sebastien Balme
Summary: This study focused on TiO2 nanoparticles (E171) and investigated the impact of protein adsorption on their aggregation and cell penetration. The results indicated that the protein coating could enhance the colloidal stability of TiO2 nanoparticles and promote cell penetration.
Article
Chemistry, Physical
Yuan Jing, Fandi Meng, Fuhui Wang, Li Liu
Summary: In this work, a long-lasting slippery liquid-infused porous surface (SLIPS) with both anticorrosion and antibacterial functions was successfully fabricated. The SLIPS coating, with its micro-nano capillary structures and p-COOH interactions, exhibited excellent durability and barrier effect. The coating showed superior anticorrosion performance and electrostatic repulsion further improved its corrosion resistance. Moreover, the SLIPS coating also demonstrated efficient bactericidal properties, making it a promising material for marine protection.
APPLIED SURFACE SCIENCE
(2023)
Article
Biophysics
McKenzie B. Riley, Evan Strandquist, Christopher S. Weitzel, Jeremy D. Driskell
Summary: Research shows that the thiolated analog of a protein has a greater affinity for gold nanoparticles (AuNPs) and is able to form a robust hard corona, maintaining structure and function, compared to the unmodified protein which denatures with prolonged exposure to AuNPs resulting in loss of enzymatic function.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Jiale Xing, Ganwei Zhang, Xinying Jia, Dapeng Liu, Ian Wyman
Summary: The study demonstrates the preparation of multipurpose polyvinylidene fluoride (PVDF) membranes using waterborne polymers, which exhibit excellent oil rejection rates for oil-water mixture and emulsion separation, high removal efficiencies for dyes and heavy metals, and antibacterial activities. The cross-linking strategy provides the coated membranes with durability and repeatability. The use of water as a solvent ensures a safe and environmentally friendly coating process for these membrane coatings.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Ceramics
Christie Ying Kei Lung, Abdul Samad Khan, Rabia Zeeshan, Sultan Akhtar, Aqif Anwar Chaudhry, Jukka Pekka Matinlinna
Summary: A newly designed antibacterial porous calcium phosphate bilayer coating incorporated with molybdenum trioxide was successfully applied to titanium implants. The coating enhanced mineral calcium phosphate formation, promoted cell growth and exhibited better antibacterial activity compared to the calcium phosphate coating. The combination of a porous structure, bilayer coating, and doped molybdenum oxide is crucial for improving the performance of calcium phosphate coating.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Environmental
Xiang Lan, Hao Zhang, Haishan Qi, Simin Liu, Xiangyu Zhang, Lei Zhang
Summary: This study designs a triblock protein (MZAgP) consisting of zwitterionic peptide, mussel adhesive peptide, and silver-binding peptide. MZAgP can be easily attached to various substrates to form an antibacterial coating, which exhibits multiple functions including inhibiting bacterial growth, reducing bacterial and protein adhesion, and preventing biofilm formation. In vivo tests demonstrate that the coating can effectively restrain bacterial infections and alleviate foreign body response with excellent biocompatibility. This study reveals the potential of MZAgP as a multifunctional protein material for fabricating novel antibacterial coatings to relieve implant-associated infections.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Jingjing Yao, Jiayi Wen, Haipu Li, Ying Yang
Summary: This study found that aged polypropylene has a higher adsorption capacity for pharmaceuticals and personal care products, with adsorption behavior affected by surface diffusion, while fresh polypropylene is influenced by liquid-film and intra-particle diffusion. Analysis of surface functional groups further demonstrated differences in adsorption capacity and interactions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Andris Sutka, Linda Mezule, Viktorija Denisova, Jochen Meier-Haack, Akshay Kulkarni, Sanda Bitina, Krisjanis Smits, Svetlana Vihodceva
Summary: This study presents a scalable and rapid method for producing antibacterial coatings on flexible polymer substrates. By spin-coating a slurry of ZnO nanoparticles in toluene, a stable modification layer was obtained on polystyrene and poly(ethylene-co-vinyl acetate) substrates, showing high antibacterial efficiency.
Article
Chemistry, Physical
Hao Wu, Chen -Si Li, Xue-Rui Tang, Yuan Guo, Huan Tang, Aoneng Cao, Haifang Wang
Summary: This study evaluates the effect of physiological concentrations of calcium ions on the adsorption of proteins on negatively-charged silica nanoparticles. It is found that calcium ions, as well as other metal ions, significantly enhance protein adsorption and reduce nanoparticle uptake by cells. A double-chelating mechanism is proposed to explain the enhanced protein adsorption by multivalent metal ions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
Alexander Zh. Medvedev, Boris B. Bokhonov, Oleg S. Kiselev, Arina Ukhina, Dina Dudina, Alexander Y. Alekseev, Lyubov S. Adamenko, Maria Solomatina, Alexander M. Shestopalov
Summary: In this study, a melt-blown polypropylene tape was modified with silver nanoparticles using chemical metallization. The antibacterial, antifungal, and antiviral activities of the silver-modified materials were comprehensively tested for the first time. The results showed strong antibacterial and antifungal activities of the silver-modified materials, especially at high concentrations of silver, and they were found to be effective against the SARS-CoV-2 virus. The silver-modified fiber tape can be used in face mask manufacturing and as an antimicrobial and antiviral component in liquid and gaseous media filters.
Article
Chemistry, Multidisciplinary
Guillermo Reyes, Mabel Vega-Coloma, Anna Antonova, Rubina Ajdary, Solene Jonveaux, Colleen Flanigan, Nathalie Lautenbacher, Orlando J. Rojas
Summary: Current carbon capture and utilization (CCU) technologies are energy-intensive and expensive. This study proposes an effective approach for CO2 sequestration using alkali cellulose solutions as CO2 absorption media. CO2 absorption and conversion into minerals resulted in maximum absorption of 6.5 gCO(2) g(cellulose)(-1). The resulting cellulose materials can be used in ceramic glazes, cementitious composites, and even for coral reef restoration.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Bruno D. D. Mattos, Ya Zhu, Blaise L. L. Tardy, Marco Beaumont, Ana Carolina R. Ribeiro, Andre L. Missio, Caio G. G. Otoni, Orlando J. J. Rojas
Summary: Metal-phenolic network (MPN) foams are synthesized using tannin-containing cellulose nanofibers (CNFs) and metal nitrates. The obtained foams have low shrinkage and high compression strength due to the cohesive metal-phenolic layers and hydrogen bonding network involving CNF. The presence of tannins and metal ions allows tailoring the physical and mechanical properties of the MPN foams for specific applications.
ADVANCED MATERIALS
(2023)
Article
Engineering, Manufacturing
Dong Wang, Haiying Yang, Qingxiang Wang, Yi Lu, Jie Yan, Wanli Cheng, Orlando J. Rojas, Guangping Han
Summary: Due to fatigue and damage, the durability of separation membranes in multiphase systems remains a challenge. Researchers have developed electrospun membranes based on polyacrylonitrile and cellulose nanocrystals, which exhibit high porosity, fast mass transport, and excellent durability. These membranes can effectively separate emulsions and maintain shape stability even after multiple filtration cycles.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Nanoscience & Nanotechnology
Ya Zhu, Esko Kankuri, Xue Zhang, Zhangmin Wan, Xin Wang, Siqi Huan, Long Bai, Shouxin Liu, Orlando J. Rojas
Summary: Direct ink writing (DIW) is used to engineer complex constructs from biobased colloids, with the challenges of strong water interactions and lack of interparticle connectivity overcome by using low-solid emulgel inks stabilized by chitin nanofibrils. Through complementary characterization platforms and molecular dynamics simulations, the structured three-dimensional materials with multiscale porosities are obtained, leading to excellent modulation of cell behavior on the scaffolds.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Elnaz Erfanian, Roxana Moaref, Rubina Ajdary, Kam C. Tam, Orlando J. Rojas, Milad Kamkar, Uttandaraman Sundararaj
Summary: We designed and synthesized bio-based, electrically conductive green inks for direct ink writing (DIW) of lightweight electronics and electromagnetic interference (EMI) shields. The inks incorporate cellulose and graphene oxide, without using hazardous chemicals. The ink composition and ratio significantly affect the printing fidelity, shape retention, and mechanical and electrical properties of the printed structures. For the optimized ink, a high EMI shielding effectiveness of 55.6 dB is achieved.
Article
Chemistry, Multidisciplinary
Ethan J. Frey, Sooik Im, Adam L. Bachmann, Jan Genzer, Michael D. Dickey
Summary: Liquid metal-carbon composite films were fabricated by adding poly(amic acid) (PAA) to eutectic gallium-indium (EGaIn) particle films prior to laser processing. The addition of PAA decreased the required laser power for sintering, resulted in a liquid metal-carbon composite, helped remove unsintered regions, and increased surface area. The conductive films showed high stretchability and strain-invariant resistance up to a certain strain level. However, the films exhibited high reactivity with water molecules in the air, leading to an increase in resistance over time in humid conditions.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Chemical
Zvikomborero Machikiti, Behnam Pourdeyhimi, Jan Genzer, Kirill Efimenko
Summary: Polymer-polymer adhesion plays a crucial role in polymer processing and applications involving lamination, welding, composites, blending, and coextrusion. PET/PA pairs are commonly used to produce bicomponent fibers, but the strong adhesion limits post-production processing. A method using a POMA alternating copolymer was developed to control adhesion by modifying the interface or adding it into the PET phase. The introduction of POMA reduced the interfacial adhesion strength between PET and polyamides.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Prottasha Sarker, Pallav K. Jani, Lilian C. Hsiao, Orlando J. Rojas, Saad A. Khan
Summary: The interactions between collagen and TA particles under different pH conditions are investigated. It is found that TA particles provide stronger mechanical reinforcement to collagen at acidic pH due to electrostatic interaction and hydrogen bonding. The study is conducted using rheology, isothermal titration calorimetry, turbidimetric analysis and quartz crystal microbalance with dissipation monitoring.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Sipan Liu, Chenxi Sui, Myers Harbinson, Michael Pudlo, Himendra Perera, Zhenzhen Zhang, Ruguan Liu, Zahyun Ku, Md Didarul Islam, Yuxuan Liu, Ronghui Wu, Yong Zhu, Jan Genzer, Saad A. Khan, Po-Chun Hsu, Jong Eun Ryu
Summary: We have successfully fabricated spike microstructured photonic nanocomposite coatings using a rapid, low-cost, template-free roll-to-roll method. These coatings possess high solar reflectivity (>94%) and thermal emissivity (97.0%), and can achieve subambient radiative cooling during daytime under strong direct sunlight. When facing direct sunlight in the spring of Chicago, the coatings show a radiative cooling power of 39.1 W/m(2), and have a potential energy-saving capability of 14.4%.
Article
Chemistry, Multidisciplinary
Sooik Im, Ethan Frey, Daniel J. Lacks, Jan Genzer, Michael D. Dickey
Summary: This paper demonstrates that air-stable radicals enhance the stability of triboelectric charge on surfaces. The charge retention is shown to increase with hydrophobicity, but the most prolonged charge retention is observed in surfaces treated with TEMPO, which are more hydrophilic. The charge retention decreases with reducing radical density by etching the TEMPO-silane or scavenging the radicals.
Article
Chemistry, Multidisciplinary
Bradley A. Davis, Jan Genzer, Kirill Efimenko, Milad Abolhasani
Summary: This study presents a versatile network-supported palladium catalyst for continuous synthesis of complex organic compounds. By using a hybrid polymer, the catalytic system achieves optimized performance in the Suzuki-Miyaura cross-coupling and nitroarene hydrogenation reactions. The system shows high activity, mechanical stability, and reusability, with improved reaction yields and environmentally-friendly solvent usage, making it suitable for industrial applications.
Article
Chemistry, Multidisciplinary
Like Ning, Chaoqun You, Yuxin Jia, Jingqian Chen, Yu Zhang, Xun Li, Orlando J. Rojas, Fei Wang
Summary: The development of a pesticide carrier system based on plant-derived cellulose nanocrystals modified with beta-cyclodextrin and tannic acid is investigated. The carrier enables pH-controlled delivery of the pesticide fenitrothion through hydrophobic and hydrogen bonding interactions and Cu2+ coordination. The system shows efficient antifungal and insecticidal effects along with excellent biosafety, making it a promising approach for pesticide delivery.
Article
Chemistry, Physical
Yun Yin, Xinyun Li, Qiuping Xie, Xiaoling Wang, Yunxiang He, Orlando J. Rojas, Junling Guo
Summary: This study reports a library of mesocrystals derived from 3,4,5-tri-O-galloylquinic acid. The researchers demonstrate the possibility of affording biogenic mesocrystals with tailorable colloidal behavior by gaining control of the competitive intermolecular interactions that direct the self-assembly process.
CHEMISTRY OF MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Mahyar Fazeli, Sritama Mukherjee, Hossein Baniasadi, Roozbeh Abidnejad, Muhammad Mujtaba, Juha Lipponen, Jukka Seppala, Orlando J. Rojas
Summary: The demand for biodegradable materials has increased across various industries due to environmental concerns. Lignin has emerged as a promising alternative, thanks to its unique structure and functional properties. This review summarizes recent advances in lignin-based composites, with a focus on modifying lignin and evaluating its functional contribution.
Article
Chemistry, Multidisciplinary
Ying Wang, Yuntang Zhuang, Yaru Hu, Fangong Kong, Guihua Yang, Orlando J. Rojas, Ming He
Summary: Structural design, morphology engineering, and the use of hybrid materials have been shown to enhance the catalytic performance of electrocatalysts for the oxygen evolution reaction (OER). In this study, hollow N-doped carbon nano-mushrooms (NCNM) encapsulated hybrid sulfide particles were prepared and embedded into a carbonized wood (CW) framework. The resulting self-supporting electrodes exhibited high activity and stability, outperforming most state-of-the-art wood-derived electrocatalysts. The superior performance is attributed to a combination of factors such as hybridization between Ni3S2 and Fe5Ni4S8, coordination of one-dimensional NCNMs and three-dimensional CW, modified electronic states through N and S doping, large electrochemical surface area, and low activation energy.
