Russian Journal of Applied Chemistry最新文献

{"title":"Ultrasound-Assisted Green Synthesis of Ultra-Small Silver Nanoparticles and Their Antibacterial Activity","authors":"Kim-Phuong T. Dang,&nbsp;Nguyen-Vu Ngo,&nbsp;Hong-Phuc Nguyen,&nbsp;T. Ngoc-Han Pham,&nbsp;Hieu Vu Quang,&nbsp;Thanh-Danh Nguyen","doi":"10.1134/S1070427225040056","DOIUrl":"10.1134/S1070427225040056","url":null,"abstract":"<p>The green synthesis of silver nanoparticles (AgNPs) has garnered significant attention due to its eco-friendliness, safety, and time efficiency. This study explores the ultrasound-assisted synthesis of AgNPs using an aqueous extract of <i>Hopea odorata</i> (HO) and evaluates their antibacterial properties. The reaction conditions, silver ion concentration, ultrasound amplitude, and time, were optimized using UV-Vis spectroscopy, achieving nanoparticle synthesis in just 30 min. Comprehensive characterization revealed ultra-small HO-AgNPs with an average size of 2.8 nm, confirmed by SEM, TEM, FTIR, XRD, DLS, and zeta potential analyses. FTIR results suggested phenolic compounds in the extract act as stabilizing and reducing agents, while the highly negative zeta potential (–40.9 mV) indicated excellent stability. Antibacterial tests demonstrated strong activity against <i>Staphylococcus aureus</i>, <i>Bacillus cereus</i>, <i>Escherichia coli</i>, and <i>Pseudomonas aeruginosa</i>, with the highest efficacy against <i>P. aeruginosa</i>. These findings highlight HO-AgNPs as promising ultra-small nanoparticles with potent antimicrobial potential.</p>","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 4","pages":"201 - 212"},"PeriodicalIF":0.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of an Epoxy-Anhydride Binder Containing Carbon Nanotube and Silicon Carbide Fillers Using X-ray Structural Analysis and Dynamic Mechanical Analysis","authors":"A. A. Kychkin,&nbsp;A. K. Kychkin","doi":"10.1134/S1070427225040032","DOIUrl":"10.1134/S1070427225040032","url":null,"abstract":"<p>This study investigates the influence of carbon nanotubes (CNTs) and silicon carbide (SiC) powder on the structural and mechanical properties of an epoxy-anhydride binder. The primary objective was to elucidate the modification mechanisms of the polymer matrix upon filler incorporation and evaluate their impact on the material’s thermoelastic characteristics. A key challenge involved establishing correlations between filler-induced structural changes and the composit’s viscoelastic behavior. X-ray diffraction analysis revealed that SiC addition reduces the intensity of the first diffusion peak by 23% with concomitant peak broadening, indicating decreased atomic clustering. Conversely, CNT incorporation increased the <i>z</i>₁/<i>z</i>₂ ratio by 15%, accompanied by expansion of the most probable interatomic distances (<i>r</i>₁) to 2.8 Å. Dynamic mechanical analysis demonstrated that SiC enhances the elastic modulus by 20.8% at 0.75 wt % concentration through formation of additional crosslinking nodes and cluster interactions, while maintaining property stability within the 40–115°C range. Both fillers extended the relaxation temperature interval by 5–7°C, improving damping capacity through the creation of “friction centers,” as evidenced by 18% increases in tan δ peak heights with unchanged peak widths. Radial distribution functions revealed distinct structural modifications: SiC reduced <i>r</i>₁ to 2.1 Å, indicating denser packing and lower curing energy, while CNTs produced a less dense structure with higher activation energy. These findings demonstrate that filler modification of the epoxy matrix not only alters rheological properties but also induces nanoscale phase transitions, enabling rational design of composites with desired thermomechanical performance.</p>","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 4","pages":"184 - 195"},"PeriodicalIF":0.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel Hybrid Palladium Catalysts on Substrates of γ-Aluminum Oxide and Hyperbranched Polyaminoethylene Carbonates of the Second and Third Generations","authors":"N. H. Mukhametova,&nbsp;A. F. Maksimov,&nbsp;M. A. Bochkov,&nbsp;G. A. Kutyrev,&nbsp;E. A. Karalin,&nbsp;Kh. E. Kharlampidi","doi":"10.1134/S1070427225040020","DOIUrl":"10.1134/S1070427225040020","url":null,"abstract":"<p>New hybrid palladium catalysts on substrates of γ-aluminum oxide and hyperbranched polyaminoethylene carbonates of the second and third generations have been synthesized. The catalysts were synthesized in several stages, firstly modification of γ-aluminum oxide with dimethyl carbonate was carried out. In the second stage, hybrid composites were synthesized by reaction of modified γ-aluminum oxide with hyperbranched polyaminoethylene carbonates of the second and third generations. In the next stage, palladium complexes were obtained by reacting the hybrid composites with palladium chloride. The structures and spherical morphologies of the particles of the obtained compounds were confirmed by infrared spectroscopy (IR), X-ray diffraction analysis (XRD), confocal laser scanning (CLSM) and optical microscopy. The pore characteristics of the Pd(II) complexes were determined by nitrogen adsorption/desorption. Pd(II) palladium complexes reduced in hydrogen flow to Pd(0) nanoparticles were utilized in the selective hydrogenation reaction of α-methylstyrene to cumene. The hybrid palladium catalysts on second and third generation γ-aluminum oxide and hyperbranched polyaminoethylene carbonate substrates showed high catalytic activity with activation energies <i>E</i>_a = 45.2 and 46.3 kJ mol^–1 in the temperature range from 43 to 73℃ and atmospheric pressure. The results indicate promising applications of the new hybrid catalysts for the hydrogenation of unsaturated compounds.</p>","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 4","pages":"176 - 183"},"PeriodicalIF":0.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Method of Processing Oil Sludge Generated at Oil Refineries in Turkmenistan","authors":"M. A. Keymirov,&nbsp;V. A. Garahanov,&nbsp;A. T. Hangeldiyev","doi":"10.1134/S1070427225040044","DOIUrl":"10.1134/S1070427225040044","url":null,"abstract":"<p>The paper presents the results of studying the chemical composition of some samples of oil sludge generated at oil refineries in Turkmenistan. The study of the composition of oil sludge from the Turkmenbashi Complex of Oil Refineries (TCOR) and the Seydi Oil Refinery (SOR) showed that the samples (TCOR) from the RVS-208, RVS-216, and RVS-246 tanks contained the following amount of mechanical impurities: 3.44, 4.41, 56.48%, respectively. The content of organic components of oil sludge (oil products) in these samples was, respectively, as follows, %: asphaltenes 38.08, 12.31, 2.36; resins 15.06, 31.18, 3.65; oils 43.41, 52.09, 37.51. Thus, the total content of oil products in the samples of the Turkmenbashi refinery is 96.55, 95.58, 43.52%, respectively. The composition of the oil sludge collected at SOR from the biological treatment facility (BTF) samples and from the mechanical treatment facility (MTF) samples contained 62.37–62.92 and 2.03% mechanical impurities, respectively. The content of chemical components of oil sludge in these samples was, respectively, as follows, %: asphaltenes 1.73–1.80 and 7.87; resins 15.96–16.24 and 17.58; oils 19.3–19.6 and 72.52. Thus, the total content of oil products in the BTF samples of SOR was 37.08–37.16%, and in the MTF samples, 97.97%. The method of processing TCOR and SOR oil sludge with gas condensate was studied and for comparison, straight-run gasoline and reformate, semi-finished products of the enterprises, were used as an extractant. Investigation result demonstrated that the gas condensate used at the refinery as supplementary feedstock can be successfully employed as a solvent for the oil sludge processing. However, multi-stage processing of oil products from oil sludge with a solvent is required for their more complete extraction.</p>","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 4","pages":"196 - 200"},"PeriodicalIF":0.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient Conversion of CO2 to Hydrocarbons over the InOx@NPC/(Zn,Al)Beta Tandem Catalysts","authors":"Tianyu Yang,&nbsp;Juan Wang,&nbsp;Linfei Xiao,&nbsp;A. L. Maximov,&nbsp;Wei Wu","doi":"10.1134/S1070427225040019","DOIUrl":"10.1134/S1070427225040019","url":null,"abstract":"<p>The hydrogenation of CO₂ to hydrocarbon compounds is a promising approach for CO₂ resource utilization and environmental sustainability. Nevertheless, its efficient conversion to valuable chemicals remains a challenge because of the substantial activation energy barrier associated with CO₂. In this work, <i>y</i>InO_<i>x</i>@NPC materials with varying In contents loaded on N,P-doped carbon (NPC) were prepared through the adsorption of In³⁺ on the amino-phosphoric acid chelating resin D418, followed by carbothermal reduction. Beta zeolite was hydrothermally synthesized, and a series of (Zn,Al)Beta–S_<i>x</i> samples with diverse acidity modified subsequently by Zn isomorphous substitution were prepared via the post-synthesis method. The influence of the In content and electronic properties of carbon-confined <i>y</i>InO_<i>x</i>@NPC, as well as the acidity of the Zn-modified Beta zeolite on the catalytic performance of CO₂ hydrogenation over <i>y</i>InO_<i>x</i>@NPC/(Zn,Al)Beta–S_<i>x</i> tandem catalysts obtained by mixing the powders of <i>y</i>InO_<i>x</i>@NPC and (Zn,Al)Beta–S_<i>x</i> was comprehensively investigated. The results revealed that 1InO_<i>x</i>@NPC/(Zn,Al)Beta–S₂ with the maximum oxygen vacancy density, milder Brønsted acid strength and higher Lewis acid strength enhanced the conversion capability of CO₂ and methanol intermediates, as well as increased the selectivity toward aromatics and C₄ hydrocarbons. Under the optimized reaction conditions, C₄ hydrocarbons selectivity of 41.8% and aromatics selectivity of 42.3% were obtained under CO₂ conversion of 18.8%, and a minimum selectivity of 8.6% for unwanted CO was achieved. The present work provides valuable insights into the development of tandem catalysts with high selectivity for C₄ hydrocarbons and aromatics due to the synergistic catalysis of metal and acid sites.</p>","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 4","pages":"161 - 175"},"PeriodicalIF":0.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and Validation of GC-FID Method for Quantification of Parabens from Cosmetic Creams Using the Dispersive Liquid-Liquid Microextraction Based on Solidification of a Floating Organic Drop Technique","authors":"Chandrakant V. Zure,&nbsp;Avinash L. Puyad,&nbsp;Rahul V. Pinjari,&nbsp;Santosh D. Deosarkar","doi":"10.1134/S1070427225030012","DOIUrl":"10.1134/S1070427225030012","url":null,"abstract":"<p>Parabens are commonly used as preservatives in numerous personal care products and foods to prevent the growth of microorganisms. Parabens play vital role as antimicrobial, preservative, and flavoring agents hence are often used in cosmetic, pharmaceutical and flavor products. The high concentrations of parabens can cause sever health issues, hence the methyl and propyl paraben levels in cosmetics are restricted and all other parabens banned. Thus, a simple, rapid, and ecofriendly dispersive liquid-liquid microextraction method based on solidification of a floating organic drop (DLLME-SFO) technique has been developed for the extraction of methyl and propyl parabens from cosmetic cream. The separation and quantification of these parabens are performed using gas chromatographic flame ionization detector method. The extraction solvent, dispersive solvent, solvent volumes, diluent, gas chromatography (GC) column and carrier gas are optimized. The method is validated according to the ICH guideline for specificity, precision, recovery, linearity, and limit of detection. This method achieves accuracy of 100.727% (±0.002%) and 98.713% (±0.003%) for methyl and propyl paraben, respectively. The present method is simple, rapid and accurate for quantification of parabens hence valuable, reliable, and very suitable to be applied in routine quality control laboratories.</p>","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 3","pages":"109 - 120"},"PeriodicalIF":0.6,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photo-Degradation of Acid Yellow 36 Dye Using ZnFe2O4 as a Photocatalyst","authors":"S. D. Jadhav,&nbsp;V. S. Patil,&nbsp;M. I. Maneri,&nbsp;M. K. Mahale","doi":"10.1134/S1070427225030061","DOIUrl":"10.1134/S1070427225030061","url":null,"abstract":"<p>This study investigates the photocatalytic decolorization of Acid Yellow 36 dye using sintered ZnFe₂O₄ powder prepared at 500–900°C for 4 h. Photocatalytic experiments were conducted under artificial illumination using a Philips 250 W light source with an intensity of 1.48 × 10^–7 Ens s^–1. The decolorization process followed pseudo-first-order kinetics. Optimum conditions for decolorization were determined as an initial dye concentration of 50 mg/L, a ZnFe₂O₄ dose of 150 mg/100 mL, and an initial solution pH of 6.75. Under these conditions, a maximum dye removal efficiency of 88.18% was achieved within 100 min at 30°C. Increasing the reaction temperature enhanced the photocatalytic activity, with a positive enthalpy change (Δ<i>H</i>) of 20.55 kJ mol^–1 and a low activation energy of 22.61 kJ mol^–1. Additionally, the Fenton reaction using ZnFe₂O₄ nanopowder further enhanced the photodecolorization efficiency, demonstrating its potential as an effective photocatalyst for wastewater treatment.</p>","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 3","pages":"153 - 159"},"PeriodicalIF":0.6,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structure and Properties of Epoxy Composites Modified with Titanium Oxide Filler","authors":"R. Lyga,&nbsp;V. Mikhal’chuk,&nbsp;A. Vereskun,&nbsp;N. Maltseva,&nbsp;A. Ivanchenko","doi":"10.1134/S107042722503005X","DOIUrl":"10.1134/S107042722503005X","url":null,"abstract":"<p>Glass-like epoxy-titanium oxide composites were obtained using amine curing and sol-gel method for the formation of nanofiller from titanium tetra-n-butoxide directly in the polymer binder. As a polymer matrix of the composites, the product of polycondensation of low-viscosity epoxy resin ST-3000 and polyetheramine Jeffamine T-403 was used. The titanium dioxide content in the composites was 0.5–10 wt %. The structure of the obtained composites was studied by Raman spectroscopy and electron microscopy, and a detailed thermomechanical analysis of the samples was performed. The titanium oxide nanofiller forms a three-dimensional network in the organic polymer matrix, and such an inorganic framework reinforces the polymer. With an increase in TiO₂ concentration, the temperature of the beginning and the temperature of completion of the transition of the composites to a highly elastic state significantly increase. The mass-fractal structural organization of titanium dioxide in the composites determines the lower deformability of the samples. Interphase transition layers with different segmental mobility were detected in the structure of the composites. In these layers, during the formation of epoxy-titanium oxide composites, filler/matrix interaction occurs with the formation of chemical covalent bonds. The features of the composites’ structure affect the operational properties, in particular, the protective properties of coatings based on them. It was established that thin composite coatings can provide corrosion resistance of 315 kΩ cm² on the surface of the D16 aluminum alloy. The efficiency of corrosion protection of the substrate was 70–90%, depending on the filler concentration in the coatings.</p>","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 3","pages":"142 - 152"},"PeriodicalIF":0.6,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of Efficiency of Cleaning the Surface of Gas Turbine Engine Blades from Metal Oxides Using Halide-Containing Compounds","authors":"D. D. Fomina,&nbsp;V. Z. Poilov","doi":"10.1134/S1070427225030048","DOIUrl":"10.1134/S1070427225030048","url":null,"abstract":"<p>The nozzle blades of a gas turbine engine (GTE) are an important part of an aircraft engine. During operation, the nozzle blades are exposed to high temperatures, mechanical loads, sulfide and salt corrosion. Due to the influence of aggressive factors, carbon deposits, metal oxides and microcracks form on the surface of the blades of the gas turbine engine. To restore the performance characteristics of the blades, it is necessary to clean the surface of the blades from aluminum, titanium, tungsten, chromium, and nickel oxides. Based on the analysis of literature sources, it is shown that many detergents are not able to remove these oxides with high chemical resistance from the surface of the blades. In the article, halide-containing substances such as hydrogen fluoride gas, hydrofluoric acid, and hydrochloric acid were used to clean the blades from metal oxides. The main purpose of this work was to study the efficiency of cleaning the surface of the GTE nozzle blade with halide-containing compounds from carbon deposits and stable metal oxides of aluminum, titanium, tungsten, chromium, and nickel. The composition of the material used in the study and the analytical tools used to determine the surface composition of a sample of a GTE nozzle blade made of an alloy of the KHN54KVMTYUB brand are described. The methodology and conditions of the processes of exposure to gaseous hydrogen fluoride, hydrofluoric and hydrochloric acids are considered. The features of the effect of halide-containing substances on stable metal oxides on the sample surface have been studied. It was found that hydrogen fluoride gas reacts actively with aluminum and tungsten oxide, thereby destroying the basic structure of the oxide film. Hydrofluoric acid also reacts with the components of the KHN54KVMTUB alloy, accompanied by a thinning of the oxide layer and a decrease in the oxygen content on the surface. When cleaning with hydrochloric acid using ultrasonic treatment, depressions appeared on the surface of the blades. Thus, halide-containing reagents actively react with the surface of the KHN54KVMTUB alloy, which helps to clean the blades from the oxide layer.</p>","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 3","pages":"137 - 141"},"PeriodicalIF":0.6,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Molybdenum Disulfide on the Physical, Mechanical, and Technological Properties of Polyamide-6","authors":"D. N. Karpov,&nbsp;O. O. Nikolaev","doi":"10.1134/S1070427225030036","DOIUrl":"10.1134/S1070427225030036","url":null,"abstract":"<p>The article considers the features of polyamide-6 modification with additives based on molybdenum disulfide, which significantly expands the scope of its application. However, polymer modification not only alters the target properties but may also affect other characteristics, sometimes negatively. The main task for developers of composite material is to select a balanced composition to achieve the desired goal—obtaining an antifriction, wear-resistant composite. The study presents a brief analysis of the effect of molybdenum disulfide on the overall properties of the polymer composites based on a literature review of publications from the last 5–7 years (16 sources, including cross-references). The effect of molybdenum disulfide on the physico-mechanical and technological properties of polyamide-6 has been investigated. In addition, various approaches to the creation of polymer composites are discussed. Initially, a fairly wide range of additive concentrations was studied and a narrow sector of its rational and effective use was determined. In the second stage of the study, the approach to polymer modification was changed. A modification scheme focused on large-scale production of polymer products was used. Based on the results of preliminary studies, international experience in this area was analyzed. It was noted that similar effects were observed when creating nanocomposites using modified molybdenum disulfide samples, but the general behavior of the polymer material and the achieved characteristics are different. The study highlights the challenges in producing MoS₂-based composites via direct mixing of components in a twin-screw extruder and proposes a method for their production using concentrates. The behavior of polymer compositions in the areas of ultimate deformations were investigated, revealing an increase in tensile strength and a change in the destruction mechanisim with hypotheses proposed regarding their nature. It was noted that the zone of ultimate deformations could be a subject of further research and is of interest in the context of forming highly oriented states in polyamide-6 composites.</p>","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 3","pages":"131 - 136"},"PeriodicalIF":0.6,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}