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Accelerated Testing of the Stability of the Properties of Surgical Suture Materials Based on Biodegradable and Nonbiodegradable Polymers
Protection of Metals and Physical Chemistry of Surfaces. 2025. Vol. 61. No. 5. P. 1231–1238.
Zhavoronok E. S., Lenkova K. A., Matrenina A. V., Vinokurova T. I., Senchikhin I., Kedik S. A., Legonkova O. A.
This study investigated two groups of surgical suture materials—nonabsorbable (polyethylene terephthalate,
polyamide, and silk) and absorbable (glycolic/lactic acid copolymer)—before and after accelerated aging. The analysis employed tensile strength testing, Fourier-transform infrared (FTIR) spectroscopy, and differential scanning calorimetry (DSC). Following domestic and international standards for polymer aging, the samples were subjected to the following initial accelerated aging conditions: 168 days at 50°C, 84 days at 60°C, and 42 days at 70°C. The results demonstrate that accelerated aging does not alter the chemical or phase structure of the nonabsorbable sutures. Their strength properties complied with the relevant standard requirements, which supports the suitability of these test conditions for such materials. However, not all initial test conditions suit absorbable sutures because these fibers lose a significant portion of their strength because of pronounced chemical and physical changes. FTIR and DSC data support the use of more moderate accelerated-aging conditions for absorbable sutures.
Budkov Y., Kalikin N., Journal of Chemical Physics 2026 Vol. 165 Article 064506
A self-consistent statistical-mechanical theory of the Hall effect in electrolyte solutions is developed by extending the self-consistent Debye–Hückel–Onsager (SCDHO) framework to crossed electric and magnetic fields. The theory incorporates non-local ionic charge distributions via Slater-type form factors, regularizing the Coulomb interaction at short range, and accounts for dielectric friction through ion-specific coefficients, employing experimental values ...
Added: August 12, 2026
G. G. Bondarenko, Kristya V. I., Savichkin D. O. et al., Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques 2026 Vol. 20 No. 2 P. 417–423
A model of a glow gas discharge in a mixture of argon and mercury vapor is formulated in the presence
of a thin insulating film on the cathode surface. Dependences of the discharge characteristics on the
mixture temperature are calculated in the range of its variation, in which a noticeable contribution to ionization
of the working gas is ...
Added: August 1, 2026
Voropaeva D., S. Novikova, I. Stenina et al., Solid State Ionics 2026 Vol. 445 Article 117288
Composite gel polymer electrolytes based on a perfluorinated sulfonic acid cation-exchange MF-4SC membrane
containing surface-sulfonated nanoparticles of aluminum oxide, cerium (IV) oxide, and titanium oxide (sAl2O3,
sCeO2, and sTiO2, respectively) were prepared by casting from a dispersion in N,N-dimethylformamide and
plasticized with a 1,3-dioxolane/1,2-dimethoxyethane mixture. The influence of the filler nature on ionic conductivity,
solvent uptake, activation energy, lithium ...
Added: July 30, 2026
Dmitry Vasilyev, Gorev V., Ikhsanov R. et al., Journal of Materials Science 2026 No. 61 P. 25452–25470
The orthorhombic phase of 𝛼-Mo2 C is a key component in electrocatalytic applications, as Mo2C-based catalysts can exhibit catalytic performance comparable to or exceeding that of noble metals. Despite its technological relevance, theoretical understanding of the anisotropy in the thermal expansion and related thermoelastic properties of 𝛼-Mo2 C remains limited. In this work, first-principles calculations ...
Added: July 23, 2026
Borovitskaya I. V., Pimenov V. N., Korshunov S. N. et al., Physics of Atomic Nuclei 2026 Vol. 89 No. 1 P. S48–S55
The effect of high-power pulsed laser radiation (LR) generated in the GOS 1001 setup in the
Q-modulated mode (with a flux power density q equal to 1 × 1014 W/m2, pulse duration t = 50 ns, and the
number of pulses N from 1 to 8 in vacuum) on the structure and microhardness of the surface of ...
Added: July 22, 2026
Korogod D., Shapeev A., Ivan S. Novikov, Physical Review B: Condensed Matter and Materials Physics 2026 Vol. 114 No. 2 Article 024104
We present two models with explicit long-range electrostatics in the form of Coulomb interactions. Both models include point charges depending on their local atomic environments, and the second model also conserves a total charge of an atomic system. We combine the proposed long-range models with the local moment tensor potential (MTP) and demonstrate that they ...
Added: July 22, 2026
Kilinc N., ALI I., Economies 2026 Vol. 14 No. 7 Article 277
The increasingly rapid process of de-dollarization in the context of growing geopolitical fragmentation has significantly altered the monetary dynamics of the global economy, thereby posing important questions about economic resilience and sustainable development in the emerging world. This research investigates de-dollarization-related macro-financial conditions and their association with economic resilience in the BRICS+ countries during the ...
Added: July 14, 2026
Moshkina E., Molokeev M., Zolotov A. et al., Journal of Alloys and Compounds 2026 Vol. 1077 Article 189412
A wide series of substitutions in a subsystem of small radii cations M = Al, Cr, Fe, Ga, Sc is possible in rare-earth borates ReM3(BO3)4 with the huntite structure. However, the existence of these compounds where M = Mn still raises doubts. The study presents a synthetic approach developed in the framework of the flux method allowing for the required ...
Added: June 29, 2026
Schneider M., Zaripov D., Dokin R. et al., Journal of Chemical Theory and Computation 2026 Vol. 22 No. 9 P. 4405–4414
Density functional theory (DFT) is the workhorse of modern reactions and materials modeling. While the exact functional remains unknown, many approximations to it have been constructed either by hand-crafting functional forms to satisfy exact constraints or by machine learning. In this work, we show how both of these approaches can be fused to build both ...
Added: June 26, 2026
Laurinavichyute V., Levin E. E., Mironkova A. A. et al., Surfaces and Interfaces 2026 Vol. 81 Article 108389
In this work we characterize mixed Mo-W acidic deposition solutions with Mo content ranging from 0 to 100 mol.% by Raman and UV–Vis spectroscopy. The obtained distribution diagram of mixed isopolyanions allows one to explain the observed change in film deposition rate with increase in Mo content. It was found that the initial decrease in ...
Added: June 24, 2026
Г. Г. Бондаренко, Кристя В. И., Савичкин Д. О. et al., Поверхность. Рентгеновские, синхротронные и нейтронные исследования 2026 № 4 С. 29–36
Сформулирована модель тлеющего газового разряда в смеси аргона и паров ртути при наличии
на поверхности катода тонкой диэлектрической пленки. Рассчитаны зависимости характеристик
разряда от температуры в интервале ее изменения, в котором заметный вклад в ионизацию
рабочей газовой смеси дает ионизация атомов ртути метастабильными возбужденными атомами
аргона (реакция Пеннинга). Показано, что в случае катода без диэлектрической пленки при
повышении температуры до ...
Added: June 20, 2026
Filippova A. V., Yurchenko N. Y., Smirnov S. A. et al., Journal of Alloys and Compounds 2026 No. 1074 Article 189162
This study investigates the effects of post-processing heat treatment at 300–500 °C on the microstructure, hardness, and tensile properties of laser powder bed fusion (PBF-LB) processed Al-bronze processed with energy densities (ED) in the range of 125–938 J/mm3. In the as-printed state, sharp needle-like α + β′ laths form at lower ED whereas with increasing ED, the β′ ...
Added: June 12, 2026
Zirnik G., Ostovari Moghaddam A., Zhukov S. et al., Journal of Materials Science: Materials in Electronics 2026 Vol. 37 Article 738
In regards to the advances in InGaZnO for flexible transistors applications, herein for the first time we measure the broadband radio-frequency range (10 Hz to 1 MHz) dielectric permittivity ε′ and electrical conductivity σ of InGaZnO4 nanoparticle layers at different temperatures ranging from 10 to 300 K. The InGaZnO4 nanoparticles prepared by metal–nitrate–glycol gel decomposition method exhibited ...
Added: June 6, 2026
Obijiofor O., Novikov A., New Journal of Chemistry 2026 Vol. 50 No. 23 P. 9749–9768
Rational design of gold-based nanocarriers for neurotherapeutics requires atomic-scale understanding of drug-material interactions. Density functional theory calculations were performed to investigate levodopa (L-DOPA) adsorption on small gold clusters (Au2–Au4) with cationic, neutral, and anionic charges, with additional validation on a larger Au10 cluster using multiple low-energy isomers. Binding free energies (ΔGbind), charge transfer, and electronic descriptors ...
Added: June 3, 2026
Das A., Saikia J., Maji N. et al., ChemNanoMat 2026 Vol. 12 No. 5 Article e202500733
Developing efficient photoactive materials from bio-derived resources is vital yet challenging for achieving effective water splitting performance. In this work, nano carbon dots (CDs) of zero-dimensional (0D) were synthesized from papaya peel through a simple and eco-friendly process and subsequently anchored onto the two-dimensional (2D) layered structure of graphitic carbon nitride (g-C3N4, GCN) at various ...
Added: June 2, 2026
Wary R. R., Mahato B., Sharma N. et al., The Journal of Physical Chemistry Letters 2026 Vol. 17 No. 17 P. 5099–5107
Development of heterojunction materials is an efficient approach for enhancing photocatalytic and photoelectrochemical processes. We develop a ZnO/CuO heterojunction via Cu doping into a ZnO matrix. Structural characterization confirmed that Cu was effectively incorporated into ZnO without any structural changes. The improved optical properties and reduced charge carrier recombination of the doped samples were confirmed ...
Added: June 2, 2026
Садртдинова Г. И., Vinogradov A., Nifantiev I. et al., Polymer 2025 Vol. 339 Article 129133
Isotactic copolymerization of but-1-ene with bio-based undec-10-en-1-ol (M1), dec-9-en-1-ol (M2) and their silyl esters (M3–M5), catalyzed by C1-symmetric ansa-heterocene [Me2Si(η5-2,4,7-trimethelinden-1-yl)(η5-2,5-dimethyl-7H-cyclopenta[1,2-b:4,3-b']dithiophen-7-yl)]ZrCl2 (Zr1), activated by iBu3Al and MMAO-12, was explored for the first time. At [AlMMAO]/[Zr1] = 40 and [Monomer]/[Zr1] = 5,000, iBu2Al-protected ω-alken-1-ols have demonstrated highest activities and up to 16.7 mol% degrees of the comonomer incorporation with a formation of ...
Added: May 12, 2026
Легонькова О. А., Стаффорд В. В., Винокурова Т. И. et al., Физикохимия поверхности и защита материалов 2025 Т. 61 № 2 С. 196–206
Проведены обобщающие сравнительные исследования по изменению поверхностных, физико-механических свойств биорезорбируемых нитей in vitro и in vivo, реакции тканей на использование шовных материалов с разными сроками биодеструкции: сополимер лактида с гликолидом (ПГЛ), полидоксанон (ПДО), сополимер гликолида и ε-капролактона (ПГК). Определена причина возникновения возможной воспалительной реакции тканей. Процесс биодеструкции для всех нитей начинается с поверхности, сопровождается “выщелачиванием” ...
Added: February 19, 2026
Rumyantsev M. S., Kalagaev I. Y., I. N. Senchikhin, Macromolecules 2025 Vol. 58 No. 5 P. 2574–2588
The search for chemical and technological solutions to process cheap and available elemental sulfur to produce valuable multifunctional materials is one of the current challenging tasks. Instead of extensively used low-molecular-weight monomers, we proposed to use the original reactive polyalkylene sulfide resin as an alternative reagent containing pendant methacrylic groups. The use of a reactive ...
Added: February 19, 2026
Сысоэв, Э., Bashirov I., Sychov M. et al., ACS Applied Materials & Interfaces 2025 Vol. 17 No. 22 P. 33108 – 33120
Added: November 12, 2025
Gleb Vaganov, Didenko A., Popova E. et al., Polymer Engineering and Science 2025 Vol. 65 No. 8 P. 4314–4322
This study investigates the correlation between the molecular weight of semicrystalline polyimide and the properties of injec-tion moldings based on it. It was found that the degree of crystallinity can be increased by annealing of molding. The molecularweight of polyimide materials directly influences their glass transition temperature. An increase in molecular weight leads toa decrease ...
Added: September 15, 2025
Nechvoglod O., Ostovari Moghaddam A., Pratskova S. et al., The Minerals, Metals & Materials Society 2025 Vol. 77 P. 1005–1028
This work provides an overview on the fabrication process, composition and properties of high-entropy alloy (HEA) coatings fabricated by electrodeposition. Special attention is paid to the effect of electrodeposition parameters and electrolyte composition on the microstructure, morphology, and mechanical/functional properties of the HEA coatings. It is demonstrated that the majority of researches has been focused ...
Added: June 10, 2025
Naseri M., Reihanian M., Ostovari Moghaddam A. et al., Journal of Materials Research and Technology 2023 Vol. 26 P. 6794–6806
Increasing the strength of metallic multilayered composites fabricated through accumulative roll bonding (ARB) is typically accompanied by a sacrifice in ductility. In the current work, we propose a strategy to achieve microstructural refinement and outstanding strength-ductility synergy in Al/Brass composites. Here, the aluminum matrix exhibits a bimodal grain distribution, consisting of fine equiaxed grains with ...
Added: February 18, 2025
Ostovari Moghaddam A., Fereidonnejad R., Cabot A., Journal of Alloys and Compounds 2023 Vol. 960 Article 170802
Intermetallic compounds (ICs) have been actively investigated since the early twentieth century due to their high strength, especially at high temperatures, as well as a variety of other complex features. However, lack of ductility at ambient temperature has continually hampered their practical applications. In recent years, the concept of entropy stabilization in multicomponent materials or ...
Added: February 18, 2025