Review
Polymer Science
Kinga Lysien, Agnieszka Stolarczyk, Tomasz Jarosz
Summary: This review focuses on energetic oxetanes as a group of energetic binders, discussing their synthesis, key properties, and future development trends in the field of polyoxetane EBs.
Article
Polymer Science
Wen Hu, Chun Qi, Xiang Guo, Ai-min Pang, Na Zhou, Jun Lu, Gen Tang, Lin Gan, Jin Huang
Summary: By anchoring carbon nanotubes (CNT) on GAP, the mechanical and thermal properties of the binder were significantly improved, providing a new solution for enhancing the reinforcement region of multi-component systems.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Polymer Science
Wu Yang, Wenhao Liu, Mengze Zheng, Ximing Zhang, Peng Jin, Tianqi Li, Yunjun Luo
Summary: This article investigates the application of polydopamine (PDA) coating on ammonium perchlorate (AP), which is used to improve the mechanical properties of glycidyl azide polymer (GAP) based propellant. The results show that the PDA@AP composite particles were successfully prepared, with no change in crystal form. The coating of PDA improved the wettability of AP and enhanced the adhesion between AP and GAP, leading to increased tensile strength and decreased elongation at break of the propellant.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Mingyang Ma, Younghwan Kwon
Summary: A series of robust and energetic polyurethane binders were developed by in situ grafting reactive spiranes to enhance the migration resistance of processing aids and compensate for energy output. The compatibility between the reactive grafting spiranes (RGSs) and uncured glycidyl azido polymer (GAP) was quantitatively studied, showing that propargyl species had faster reactivity. The mechanical and thermochemical enhancements of GAP-based polyurethane with RGS were mainly achieved through highly ring-strained moieties.
Article
Multidisciplinary Sciences
Yaru Li, Hui Ren, Xinzhou Wu, Huixin Wang, Xilong Yu
Summary: This study investigates the use of a Glycidyl Azide Polymer (GAP) coating on aluminum particles to enhance their reactivity and energy content. The results show that the GAP coating lowers the oxidation onset temperature and activation energy of the aluminum particles. Additionally, the coated particles exhibit higher peak pressure, pressurization rate, and shock wave velocity compared to the non-coated particles.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
Joel T. Clemmer, Kevin N. Long, Judith A. Brown
Summary: Damage in polymer-filled granular composites can occur before material failure during mechanical loading. These damages can significantly affect the material's mesostructure and have far reaching effects on mechanical properties and performance. This study assesses experimental knowledge and proposes a simulation framework to investigate the effects of interfacial strength and glass transition temperature on the material's mechanical response. The simulations identify key trends and provide insights into potential origins for changes in mechanical behavior.
MECHANICS OF MATERIALS
(2023)
Article
Chemistry, Applied
Yadollah Bayat, Fatemeh Jozi, Tayebe Khanlari
Summary: In this research, novel energetic plasticizers were synthesized via end-group modification of poly glycidyl nitrate. Thermal analysis showed that TNPGN has potential as a novel energetic plasticizer for propellant.
JOURNAL OF ENERGETIC MATERIALS
(2022)
Article
Polymer Science
Fahimeh Ghoroghchian, Yadollah Bayat, Fatemeh Abrishami
Summary: Polyurethane elastomers of PPG-GAP-PPG triblock were copolymer prepared for the first time in this work, achieving improved mechanical properties through curing the synthesized binder using isocyanates such as IPDI, TDI, and N-100, as well as their mixtures. Incorporation of a more compatible plasticizer, such as 5% BuNENA, resulted in the best mechanical properties, while optimized curing results were obtained using equal weights of IPDI/N100 curing agents and DBTDL as a catalyst. Mechanical properties were characterized through elongation tests, showing significant improvements in both elongation at break and tensile strength. Thermal properties were studied using DMTA and DSC techniques.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Chemistry, Physical
Tayebe Khanlari, Yadollah Bayat, Mohammad Bayat, Nasser Sheibani
Summary: A random copolymer with potential application as a binder in the propellant industry was synthesized and studied for its thermal and mechanical properties when combined with different plasticizers. The results indicated that the plasticizer BuNENA significantly affected the mechanical properties of the polyurethane network.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Polymer Science
Jing Zhang, Zhen Wang, Shixiong Sun, Yunjun Luo
Summary: A novel high-strength solid propellant adhesive system using GAP-ETPE as the adhesive skeleton, Bu-NENA as the energetic plasticizer, and NC as the reinforcing agent was proposed. The effects of structural factors on its properties were studied, and the results showed improved mechanical and safety properties of the propellant. This research provides a reference for the design and preparation of high-performance GAP-based green solid propellants.
Article
Materials Science, Multidisciplinary
Gaetane Plassart, Didier Picart, Michel Gratton, Arnaud Frachon, Michael Caliez
Summary: The constitutive law of plastic-bonded explosives (PBX) based on TATB crystals was investigated under quasi-static loading. The study revealed viscoelastic behavior with damage, as well as anisotropy induced by plastic flow. Due to the inadequacy of existing models, a constitutive law that accounts for the observed mechanisms was proposed. The law integrates linear viscoelasticity in a microplane model and describes an effective anisotropic damage. A multilayer viscoplasticity was used to introduce non-linear kinematic hardening. The proposed law was implemented in the Abaqus/Standard finite element code for simulation and calibration on ten tests.
MECHANICS OF MATERIALS
(2022)
Article
Chemistry, Applied
Yu-bing Xue, Hua-lin Xiong, Jie Tang, Guang-bin Cheng, Hong-wei Yang
Summary: The study investigates the applications of high-nitrogen energetic salts as functional materials for the formulation of explosives, gas-generating agents, and propellants. The compounds show outstanding detonation performance and low mechanical sensitivities, making them efficient components for gas-generating agents and propellants.
PROPELLANTS EXPLOSIVES PYROTECHNICS
(2021)
Article
Biochemistry & Molecular Biology
Dmitry B. Vinogradov, Pavel Bulatov, Evgeny Yu Petrov, Pavel S. Gribov, Natalia N. Kondakova, Natalia N. Il'icheva, Evgenia R. Stepanova, Anatoly P. Denisyuk, Vladimir A. Sizov, Valery P. Sinditskii, Aleksei B. Sheremetev
Summary: A simple and mild method has been developed for the preparation of alkyl nitramines with a halogenoalkoxylic moiety. Azidoalkoxyl alkyl nitramines have been successfully produced as energetic plasticizers from these reactive halogen intermediates. The resulting plasticizers have excellent energetic performance and hold promise as environmentally friendly energetic materials.
Article
Construction & Building Technology
Moussa Thiam, Mamadou Fall, M. S. Diarra
Summary: The study investigates the mechanical properties of mortar with plastic waste as the only binder under different curing conditions and granular material sizes, finding that these factors have a significant impact on the material's strength. Water curing reduces strength, while adding coarse granular materials helps improve strength. The proposed plastic waste binder interlocking pavers show superior mechanical performance compared to Portland cement-based pavers, with lower cost.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Chemistry, Applied
Yalun Wang, Hui Rong, Xiuhui Zhang, Yu Chen, Wen Luo, Yunfei Liu, Weishang Yao, Ye Tian
Summary: This study investigated the influences of desensitized energetic plasticizer on the properties of the binder, determining the mechanisms at the chemical bond and polymer chain levels through Gaussian quantum chemical calculation and MD simulation. The consistent results at both micro and macro levels offer important theoretical guidance for studying the structure-mechanism-performance relationship of propellant binder.
PROPELLANTS EXPLOSIVES PYROTECHNICS
(2021)
Review
Biochemistry & Molecular Biology
Monika Richter-Laskowska, Paulina Trybek, Domenico Vittorio Delfino, Agata Wawrzkiewicz-Jalowiecka
Summary: Potassium channels are integral proteins responsible for the transport of K+ ions through biological membranes. They are important drug targets due to their physiological roles in membrane potential regulation and cell signaling. Flavonoids, a group of biologically active substances found in plants, have been shown to modulate potassium channels and exert beneficial effects on human health. This article presents the current knowledge on the modulation of potassium channels by flavonoids and discusses the potential implications of these changes. It also suggests future research directions in this area.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Analytical
Paulina Trybek, Ewelina Sobotnicka, Agata Wawrzkiewicz-Jalowiecka, Lukasz Machura, Daniel Feige, Aleksander Sobotnicki, Monika Richter-Laskowska
Summary: The accurate detection of fiducial points in the impedance cardiography signal (ICG) is crucial for estimating diagnostic parameters. This study proposes a novel method based on Empirical Mode Decomposition (EMD) to overcome the challenges posed by noise and varying morphology in the acquired signals. The algorithm shows high correlations with expert annotations, indicating its ability to provide precise clinical information.
Article
Engineering, Biomedical
Jakub Hadzik, Pawel Kubasiewicz-Ross, Tomasz Gebarowski, Natalia Waloszczyk, Artur Maciej, Agnieszka Stolarczyk, Tomasz Gedrange, Marzena Dominiak, Ernest Szajna, Wojciech Simka
Summary: The study evaluated the low-pressure radiofrequency oxygen plasma treatment on the anodized Ti-6Al-4V alloy surface and found that the treated surface had a slight increase in oxygen concentration and exhibited high corrosion resistance. The cytotoxicity assay revealed no changes in cell morphology or vitality, but the treated samples showed significantly higher fibroblast proliferation and adhesion scores. Therefore, the low-pressure radiofrequency oxygen plasma treatment is a promising option for the surface modification of transgingival elements in dental implants.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Kateryna Diedkova, Alexander D. Pogrebnjak, Sergiy Kyrylenko, Kateryna Smyrnova, Vladimir V. Buranich, Pawel Horodek, Pawel Zukowski, Tomasz N. Koltunowicz, Piotr Galaszkiewicz, Kristina Makashina, Vitaly Bondariev, Martin Sahul, Maria Caplovicova, Yevheniia Husak, Wojciech Simka, Viktoriia Korniienko, Agnieszka Stolarczyk, Agata Blacha-Grzechnik, Vitalii Balitskyi, Veronika Zahorodna, Ivan Baginskiy, Una Riekstina, Oleksiy Gogotsi, Yury Gogotsi, Maksym Pogorielov
Summary: New conductive materials are needed for tissue engineering to develop regenerative strategies for nervous, muscular, and heart tissues. Polycaprolactone (PCL) is used to create biocompatible and biodegradable nanofiber scaffolds, while MXenes can make these scaffolds conductive and hydrophilic. This study investigates the physical properties, defect structure, and porosity of PCL-MXene composite scaffolds, and demonstrates their advantages over existing conductive scaffolds for tissue engineering in terms of structure, chemistry, electricity, and biology.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Physics, Multidisciplinary
Lukasz Machura, Agata Wawrzkiewicz-Jalowiecka, Monika Richter-Laskowska, Paulina Trybek
Summary: The study explores the complexity of empirical data on ionic currents flowing through a single channel in a biological membrane. Simulated data reveal the significant influence of temperature and conformational changes on the complexity of the currents, which are difficult to control experimentally.
Review
Biochemistry & Molecular Biology
Agata Wawrzkiewicz-Jalowiecka, Anna Lalik, Agnieszka Lukasiak, Monika Richter-Laskowska, Paulina Trybek, Maciej Ejfler, Maciej Opalka, Sonia Wardejn, Domenico V. V. Delfino
Summary: Potassium channels are important proteins that shape the biology of cancer cells. Their relationship with K+ channel function, glucose metabolism, and cancer glycome is intriguing. This review outlines the interconnections between potassium channel expression and activity, carbohydrate metabolism, and altered glycosylation in cancer cells, and proposes potential mediators and novel directions for further research.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Chemistry, Multidisciplinary
Magdalena Fabin, Mieczyslaw Lapkowski, Tomasz Jarosz
Summary: Nitroaromatic compounds, especially 2,4,6-trinitrophenol (picric acid), have recently received considerable research attention as environmental contaminants, leading to the development of detection methods. This study focuses on picric acid as the most common and problematic contaminant. The key materials sensitive to picric acid are identified, and recent developments are discussed in detail, with emphasis on the detection and speciation capabilities of these materials and methods, along with relevant technical considerations.
APPLIED SCIENCES-BASEL
(2023)
Article
Biophysics
Agata Wawrzkiewicz-Jalowiecka, Paulina Trybek, Beata Dworakowska, Piotr Bednarczyk, Przemyslaw Borys
Summary: Flavonoids, particularly naringenin and quercetin, have been found to activate mitochondrial large-conductance voltage and Ca2+-activated K+ channels. This study investigates the effects of naringenin and quercetin on the conformational dynamics of the channels, revealing that quercetin has a stronger interaction with the channels compared to naringenin.
EUROPEAN BIOPHYSICS JOURNAL WITH BIOPHYSICS LETTERS
(2023)
Article
Biochemistry & Molecular Biology
Kinga Lysien, Klaudia Szatan, Konrad Szydlo, Mateusz Polis, Marcin Procek, Agnieszka Stolarczyk, Tomasz Jarosz
Summary: The study aimed to investigate the potential of using barium peroxide as an environmentally friendly oxidising agent, evaluate the composition of the combustion products of the developed pyrotechnic delay compositions (PDCs), and provide information about the impact of metallic fuel (Mg, Al, Fe or Cu) on the properties of those PDCs. The PDCs showed acceptable friction and impact sensitivity values, enabling further experiments to determine their linear combustion velocity as a function of oxygen balance. Based on Raman spectroscopy and SEM-EDS analysis of the post-combustion residues, an initial combustion mechanism for the developed PDCs was proposed.
Article
Biochemistry & Molecular Biology
Magdalena Fabin, Agnieszka Stolarczyk, Roman Zakusylo, Tomasz Jarosz
Summary: The issues of safety and environmental impact in the field of explosives have led to a growing interest in environmentally-friendly explosives. This study explores the potential use of the gradual decomposition of concentrated hydrogen peroxide as an additional safety measure and investigates the factors influencing the dynamics of the decomposition process in explosive formulations. The choice of auxiliary oxidising agent and the nature of microspheres were found to be important factors affecting the rate of hydrogen peroxide decomposition.
Article
Biochemistry & Molecular Biology
Magdalena Fabin, Pawel Skora, Mateusz Polis, Roman Zakusylo, Agnieszka Stolarczyk, Tomasz Jarosz
Summary: In this study, various additives, including selected perchlorates and inorganic peroxides, were investigated for their potential to increase the shock sensitivity of ANFO explosives and reduce the risk of misfires. The results showed promise in using these additives in ANFO and conducting future shock wave sensitivity tests. The introduction of these additives slightly increased friction and impact sensitivity, while also moderately reducing the decomposition temperature of ANFO.
Article
Biochemistry & Molecular Biology
Mateusz Polis, Konrad Szydlo, Roman Zakusylo, Lukasz Hawelek, Agnieszka Stolarczyk, Tomasz Jarosz
Summary: This study investigates the combustion mechanism of a pyrotechnic delay composition (PDC) containing zinc powder as fuel and KMnO4 as oxidising agent. The PDC compositions were thermally conditioned at different temperatures and post-combustion residues were analyzed. The results, obtained through SEM, Raman spectroscopy, and XRD, were compared with previous studies and literature data. Based on the tests, a combustion mechanism for Zn/KMnO4 was determined, showing that the combustion process is independent of equilibrium ratio and mainly limited by the diffusion of liquid fuel into the solid oxidising agent. Moreover, Raman spectroscopy was found to be effective in determining combustion mechanisms for pyrotechnic compositions.
Article
Biochemistry & Molecular Biology
Kinga Lysien, Sylwia Waskiewicz, Agnieszka Stolarczyk, Anna Mielanczyk, Roman Zakusylo, Tomasz Jarosz
Summary: The article compares rocket propellants with traditional and energetic binders, as well as perchlorate and green oxidising agents. The effects of individual substances on sensitivity parameters, combustion velocity, heats of combustion, thermal decomposition, and activation energy are studied using various experimental methods.
