Article
Polymer Science
Katarzyna Skorczewska, Krzysztof Lewandowski, Piotr Szewczykowski, Slawomir Wilczewski, Joanna Szulc, Paulina Stopa, Paulina Nowakowska
Summary: This paper explores the characteristics of unplasticized PVC composites modified with biofiller obtained from waste eggshells, showing that the biofiller significantly improves thermal stability, increases the modulus of elasticity and softening point, and is suitable for traditional PVC mixtures' processing.
Article
Chemistry, Multidisciplinary
Svetlana Vihodceva, Andris Sutka, Maarja Otsus, Heiki Vija, Liga Grase, Anne Kahru, Kaja Kasemets
Summary: This study demonstrates a facile and rapid approach for preparing composite coatings with good adhesion and interface location at room temperature. The synthesized coating exhibits rapid inhibition of bacterial growth under visible-light illumination, showing potential for antibacterial applications.
Article
Chemistry, Physical
Katarzyna Skorczewska, Krzysztof Lewandowski, Slawomir Wilczewski
Summary: This study investigates the modification of poly(vinyl chloride) (PVC) composites using a hybrid carbon filler made of carbon fibers (CFs) and multiwalled carbon nanotubes (MWCNTs). The results show that while there is a significant increase in the elastic modulus, there is no substantial improvement in the mechanical properties of the PVC/CF/CNT composites. However, there are slight increases in thermal stability and glass transition temperature (Tg). The addition of the hybrid filler leads to substantial changes in the electrical properties of the composites, with improved dispersibility of CNTs in the matrix.
Article
Polymer Science
Jacek Mirowski, Rafal Oliwa, Mariusz Oleksy, Jolanta Tomaszewska, Joanna Ryszkowska, Grzegorz Budzik
Summary: Adding 20% of raspberry pomace filler after extraction significantly extended the thermal stability time for the composites, but as the concentration of filler in the PVC matrix increased, the composite density, impact strength, and tensile strength values decreased significantly while their modulus of elasticity and Shore hardness increased.
Article
Chemistry, Inorganic & Nuclear
Wanmi Guo, Haitao Zhu, Qifang Ren, Shaohua Chen, Yi Ding, Chunyu Xiong, Jing Chen, Xinyu Jia
Summary: MnFe2O4/ZnO/diatomite composites were prepared using a hydrothermal water bath method. The lightweight porous diatomite as a carrier improved the aggregation of ferrite and enhanced the matching impedance and interface polarization effect of the composite. By adjusting the amount of ZnO, the composite exhibited synergistic magnetic loss and dielectric loss, resulting in excellent electromagnetic wave absorption properties. The composite with 30% ZnO showed outstanding electromagnetic wave properties with a minimum reflection loss of -40.4 dB at 9.73 GHz. Furthermore, the heterostructure of ZnO-MnFe2O4 endowed the composites with considerable antibacterial properties, achieving a bactericidal rate of 99%. This composite material has the potential to be used in interior wall decorative coatings with practical electromagnetic wave absorption and antibacterial characteristics.
SOLID STATE SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Muhammad Angga Anugrah, Sultan Ilyas, Dahlang Tahir
Summary: This study investigated the effects of various inorganic fillers on the performance of composite phantom breast with polyvinyl alcohol as a binder. Analyzing bonding characteristics, structural properties, and atomic, electronic, and absorption abilities of the composite provided insights into creating breast phantom materials. The linear attenuation coefficient of the composites showed a direct correlation with the filler used, suggesting potential for optimized breast phantom production.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Biochemistry & Molecular Biology
Kai Chen, Shengrong Yuan, Jinze Li, Yan Zhang, Fengfeng Chen, Dongming Qi
Summary: In this study, a novel antibacterial nanomaterial Ag/lignin layered nanoflower was successfully synthesized using biomass lignin and silver nitrate. The material exhibited uniform distribution of Ag nanoparticles and low inhibitory concentration, showing effective antibacterial properties against bacteria. Furthermore, when sprayed onto fabrics and subjected to friction and washing treatments, the antibacterial ability of the material remained intact.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Biochemistry & Molecular Biology
Nadiyah Alahmadi, Mahmoud A. Hussein
Summary: An unpretentious, non-toxic, and cost-effective method was used to synthesize anticancer and biologically active hybrid nanocomposite materials containing cellulose acetate. Hybrid nanofillers based on ZnO and Ag NPs were prepared via green procedures. The nanocomposite materials showed good thermal stability and demonstrated antimicrobial and anticancer activities against six pathogens and breast cancer cells.
Article
Chemistry, Physical
Menghan Yu, Haiyan Wu, Yuhang Meng, Menghan Qu, Huaming Yang
Summary: The study synthesized an effective antimicrobial composite that impairs bacterial membrane and leaks nucleic acid through the generation of reactive oxygen species. The material is safe for human application and maintains a lasting antimicrobial effect.
APPLIED CLAY SCIENCE
(2023)
Article
Engineering, Biomedical
Madeeha Riaz, Mubashra Aamir, Sana Shahzadi, Aqsa Fida, Tousif Hussain
Summary: In this study, five composites based on metals (Ag, Fe, Cu) and ceramic were prepared using the solid-state sintering method. Two different phases of wollastonite were identified in all composites. The in vitro bioactivity assay showed that all composites, except the one with >0.1% Ag concentration, exhibited bioactive behavior. The antibacterial activity test demonstrated that all samples except the 0.2 Fe sample had antibacterial activity, with the 0.1Ag-0.1Cu and 0.1Ag-0.1Fe composites considered as the optimal composites due to their superior bioactivity and antibacterial efficacy.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Review
Materials Science, Ceramics
Farah Elfakhri, Rawan Alkahtani, Chunchun Li, Jibran Khaliq
Summary: Dental composites are widely used in restorative dentistry due to their ability to meet aesthetic demands and address common challenges. Researchers have explored various fillers to enhance the mechanical properties of composites, and have also introduced antibacterial agents and ion-releasing fillers to prevent cavities and promote remineralization of dental tissue.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Zhaowen Ren, Wancheng Zhou, Yuchang Qing, Shichang Duan, Haijun Pan, Yingying Zhou
Summary: The addition of SiO2 filler can effectively improve the mechanical and electromagnetic wave absorption properties of SiCf/SiC composites, thereby enhancing the flexural strength. The SiO2 filler breaks the conductive network in the SiC matrix, resulting in lower complex permittivity and better impedance matching, leading to lower reflection loss values.
CERAMICS INTERNATIONAL
(2021)
Article
Environmental Sciences
Jing Chen, Mengde Shan, Haojia Zhu, Shichuan Zhang, Jingmei Li, Leijiao Li
Summary: A BiSnSbO6-ZnO composite photocatalytic material with type II heterojunction structure was synthesized and characterized by XRD, UV-vis, and PT methods. The photocatalytic antibacterial properties of the composite were found to be significantly stronger than those of individual BiSnSbO6 and ZnO, showing broad-spectrum antibacterial activity against bacteria and fungi. The composite material generated active species OH, h(+), and e(-) through light irradiation, with e(-) playing a major role in achieving sterilization.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Textiles
Shahab Maghsoudi, Peyman Nasiri Pour, Hadi Ebrahimnejad, Elham Jalali, Mostafa Zangiabadi
Summary: The study developed a green synthesis method using Achillea milfolium plant extract to fabricate Ag NPs, ZnO NPs, and Ag/ZnO nanocomposite with antibacterial activities. Results showed that the Ag/ZnO nanocomposite exhibited the highest antibacterial activity against E. coli, and the textile loaded with Ag/ZnO nanocomposite maintained stable antibacterial effects even after 20 cycles of standard washing.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Green & Sustainable Science & Technology
F. Scalera, S. I. A. Pereira, A. Bucciarelli, D. M. Tobaldi, A. Quarta, F. Gervaso, P. M. L. Castro, A. Polini, C. Piccirillo
Summary: Chitosan (Cs) and hydroxyapatite (HA) 3D scaffolds/composites were prepared using a sustainable process, with HA obtained from cork-derived CaCO3 acting as a template agent. HA@Cs composites were formed by in situ HA formation in a Cs solution. The CsHA_72 composite exhibited improved pore structure, smaller and more circular pores, excellent biocompatibility, and good cell proliferation, making it a suitable biomaterial.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Chemistry, Physical
Milan Masar, Hassan Ali, Ali Can Guler, Michal Urbanek, Pavel Urbanek, Barbora Hanulikova, Hana Pistekova, Adriana Annusova, Michal Machovsky, Ivo Kuritka
Summary: A set of ZnO nanocrystals assembly with tunable reduced bandgaps was prepared, and it was found that the bandgap-reduced ZnO exhibits weak photocatalytic activity under visible-light irradiation. In addition, ZnO nanocrystals with oxygen vacancies showed excellent antibacterial activities, self-cleaning ability, and wettability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Biochemistry & Molecular Biology
Ali Can Guler, Jan Antos, Milan Masar, Michal Urbanek, Michal Machovsky, Ivo Kuritka
Summary: This research focuses on band bending modification of metal/semiconductor hybrid nanostructures using low-cost and effective designs in photoelectrochemical (PEC) water splitting. The introduction of gradient doping of Au nanoparticles (NPs) into ZnO nanorods (NRs) through thermal treatment enhanced the transport of photo-induced charge carriers and resulted in improved photocurrent density. The study also analyzed the plasmonic effects of Au NPs which contributed to the enhanced photoresponse of the Au-doped ZnO NRs. Overall, this research provides an economical and facile strategy for preparing noble NP-incorporated semiconductor NRs with potential applications in energy conversion and storage technologies.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Polymer Science
Martina Polaskova, Tomas Sedlacek, Zdenek Polasek, Petr Filip
Summary: The risk of retained surgical items is a serious medical danger and liability issue. Radiofrequency scanning technology is an effective method to reduce these accidents. This study proves that bismuth oxychloride (BiOCl) is a suitable alternative to barium sulfate (BaSO4) as a radiopaque agent, offering excellent stability and dispersibility within the PVC matrix. Using half the amount of BiOCl compared to BaSO4 provides satisfactory results, as demonstrated through various analytical methods.
Article
Chemistry, Multidisciplinary
Michal Macko, Jan Antos, Frantisek Bozek, Jiri Konecny, Jiri Huzlik, Jitka Hegrova, Ivo Kuritka
Summary: This paper aims to enhance the EPA health risk assessment by incorporating two new variables that consider the size of nanoparticles: the toxicity multiplier and the size multiplier. A case study was performed to observe the impact of the new variables on the assessed cadmium concentration. The proposed method with adjustments resulted in a significantly higher risk value compared to the current state-of-the-art method, with nanoparticles contributing to 88% of the total risk value.
Article
Polymer Science
Marketa Ilcikova, Monika Galeziewska, Roman Kolarik, Miroslav Mrlik, Josef Osicka, Tomas Sedlacek, Miroslav Slouf, Sabina Krejcikova, Veronika Gajdosova, Marcin Maslowski, Szymon Kozlowski, Joanna Pietrasik, Jaroslav Mosnacek
Summary: In this study, the relationship between the morphology of immiscible blends containing polymer hybrid particles and extensional rheological properties was investigated. The length of polymer brushes grafted from graphene oxide particles (GO) affected the extensional rheological properties, with longer brushes leading to decreased elongational viscosity at low rates and increased viscosity at high rates. The findings suggest that polymer brush length plays a significant role in the coalescence and formation of elongated domains.
Article
Polymer Science
Jiri Krupka, Krystof Dockal, Tomas Sedlacek, David Rebenda, Ivan Krupka, Martin Hartl
Summary: The widespread use of polymers in high-performance engineering applications presents challenges in the field of liquid lubrication. Experimental results show that the fluid-film thickness deviates from prediction models for both the Piezoviscous-elastic and Isoviscous-elastic modes in the transition region, and varies depending on the inlet temperature.
Article
Energy & Fuels
R. Blessy Pricilla, Moorthy Maruthapandi, Arulappan Durairaj, Ivo Kuritka, John H. T. Luong, Aharon Gedanken
Summary: Carbon dots (CDs) with an average diameter of 6.3 nm were synthesized from the seed extract of Syzygium cumini L. using hydrothermal synthesis. The prepared CDs showed excitation-dependent emission characteristics and displayed antimicrobial activities against four common pathogens. The release of various oxygen species was proposed as the mechanism for bacterial eradication. The CDs decorated on cotton fabric also exhibited good antibacterial activities.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Chemistry, Applied
Katarina Borska, Melania Bednarek, Danila Gorgol, Josef Osicka, Miroslav Mrlik
Summary: This study aims to synthesize sustainable polylactide (PLA) materials with enhanced thermal shape stability and reprocessing capability by introducing a new type of dynamic/reversible covalent bonds in the polymer structure through crosslinking. PLA-based networks with and without reversible bonds were prepared, and it was found that the networks with reversible bonds exhibited better mechanical properties and repairability, making them more suitable for 3D printing.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Energy & Fuels
Taghreed Al-Gunaid, Patrik Sobolciak, Ibtissem Chriaa, Mustapha Karkri, Miroslav Mrlik, Marketa Ilcikova, Tomas Sedlacek, Anton Popelka, Igor Krupa
Summary: This study investigates the thermal energy storage systems based on shape-stabilized phase change materials designed from recycled Tetra Pak waste. The optimal composition of the materials shows good thermal, mechanical, and rheological properties. The selected phase change component can store and release heat energy efficiently.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Environmental
Muhammad Yasir, Hassan Ali, Milan Masar, Fahanwi Asabuwa Ngwabebhoh, Mukarram Zubair, Tomas Sopik, Michal Machovsky, Ivo Kuritka, Vladimir Sedlarik
Summary: Novel PU nanofibers incorporating TiO2/Nd nanoparticles were fabricated by electrospinning for photocatalytic degradation of estriol hormone. These nanofibers showed high porosity and uniform mesh-like structure, with better performance under UV light compared to visible light, fitting well with the pseudo-first-order kinetic model.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
