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Eco-friendly approach to corrosion inhibition of aluminum by Congo red dye in alkaline media: Experimental assessment, QSAR modeling, diffusion studies, and DFT/MC/MD simulations 刚果红染料在碱性介质中对铝缓蚀的环保方法:实验评估、QSAR建模、扩散研究和DFT/MC/MD模拟
Hybrid Advances Pub Date : 2025-12-01 Epub Date: 2025-07-29 DOI: 10.1016/j.hybadv.2025.100532
Ayoub Chahid , Said Meftah , Mohamed Essahli , Mohammed Chafi , Rachid Kellal , Driss Benmessaoud Left , Mustapha Zertoubi
{"title":"Eco-friendly approach to corrosion inhibition of aluminum by Congo red dye in alkaline media: Experimental assessment, QSAR modeling, diffusion studies, and DFT/MC/MD simulations","authors":"Ayoub Chahid ,&nbsp;Said Meftah ,&nbsp;Mohamed Essahli ,&nbsp;Mohammed Chafi ,&nbsp;Rachid Kellal ,&nbsp;Driss Benmessaoud Left ,&nbsp;Mustapha Zertoubi","doi":"10.1016/j.hybadv.2025.100532","DOIUrl":"10.1016/j.hybadv.2025.100532","url":null,"abstract":"<div><div>Aluminum corrosion in alkaline media poses a significant limitation for its industrial use. This study proposes a comprehensive multi-scale approach to evaluate Congo Red dye (DRC) as an eco-friendly and efficient corrosion inhibitor for aluminum in 1.0 M NaOH. The work combines experimental techniques, quantum chemical calculations, and advanced modeling tools to provide detailed mechanistic insights. Weight loss measurements showed a maximum inhibition efficiency of 87.5 % at 1200 ppm, with decreased efficiency at higher temperatures, indicating a physical adsorption mechanism. The thermodynamic analysis confirmed the spontaneous and endothermic nature of the process. SEM analysis revealed the formation of a dense protective film on the aluminum surface. DFT and DFTB<sup>+</sup> calculations identified key adsorption centers through Mulliken charges, MEP maps, and Fukui functions. COSMO-RS and sigma profile analysis revealed favorable solvation and hydrogen-bonding behavior. A QSAR model, built using the Genetic Function Approximation (GFA) method and descriptors from eight azo dyes, achieved a strong predictive correlation (R<sup>2</sup> = 0.95). Monte Carlo and Molecular Dynamics simulations confirmed stable adsorption of DRC on Al(111) and Al<sub>2</sub>O<sub>3</sub>(111), with adsorption energies around −130 kcal/mol. Diffusion studies using Mean Square Displacement (MSD) and Fractional Free Volume (FFV) demonstrated the inhibitor film's ability to restrict the mobility of aggressive species (H<sub>2</sub>O, OH<sup>−</sup>, Na<sup>+</sup>, O<sub>2</sub>), highlighting its effectiveness in blocking ion transport and limiting corrosion. This study emphasizes the value of combining theoretical modeling with experimental validation and presents Congo Red dye as a sustainable and high-performance corrosion inhibitor for aluminum in alkaline environments.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"11 ","pages":"Article 100532"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced mechanical properties in green concrete through innovative blends of GGBFS, alccofine, and metakaolin 通过GGBFS、乙醇精和偏高岭土的创新混合物,增强了绿色混凝土的机械性能
Hybrid Advances Pub Date : 2025-12-01 Epub Date: 2025-06-20 DOI: 10.1016/j.hybadv.2025.100520
T. Nelson Ponnu Durai , S. Kandasamy , Achsah Rajendran Startha Christabel
{"title":"Enhanced mechanical properties in green concrete through innovative blends of GGBFS, alccofine, and metakaolin","authors":"T. Nelson Ponnu Durai ,&nbsp;S. Kandasamy ,&nbsp;Achsah Rajendran Startha Christabel","doi":"10.1016/j.hybadv.2025.100520","DOIUrl":"10.1016/j.hybadv.2025.100520","url":null,"abstract":"<div><div>This research aims to improve the sustainability and mechanical properties of concrete by using partial replacement of cement M40 grade of concrete with Ground Granulated Blast Furnace Slag (GGBFS), Alccofine (AL), and Metakaolin (MK). The study compares the effects of different proportions of GGBFS (0–50 %), Alccofine (0–20 %), and Metakaolin (0–15 %) on the compressive, tensile, and flexural strength and at curing ages of 7, 28, 56, and 90 days. The effective proportions of the replacements were determined to be 30 % GGBFS, 15 % Alccofine, and 10 % Metakaolin in ratios, which considerably improved the mechanical properties of ordinary concrete. A ternary blend of these optimal levels was subsequently studied to determine its synergistic effect on the mechanical properties and microstructure. The ternary mix demonstrated enhanced performance in every strength test in comparison with individual replacements and normal concrete. The SEM (Scanning Electron Microscopy) analysis indicated that the enhanced pozzolanic activities, higher densities of the microstructure, and denser packing densities of the particles were the primary factors contributing to the improved performance. The results highlight that through the application of SCMs, there exist promising opportunities in attaining high performance at the same time as a low environmental footprint that could help in concrete innovation for more sustainable solutions. With its unique investigation of a ternary blend of SCMs (GGBFS, Alccofine, and Metakaolin), this work presents a novel approach to the development of green concrete by showcasing their synergistic impact on mechanical and microstructural qualities.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"11 ","pages":"Article 100520"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144338379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of coating and grooving on mechanical performance of bamboo-reinforced concrete 涂层和开槽对竹筋混凝土力学性能的影响
Hybrid Advances Pub Date : 2025-12-01 Epub Date: 2025-06-24 DOI: 10.1016/j.hybadv.2025.100521
Md Mahmud Siddique, Md Shariful Islam, Md Arifuzzaman
{"title":"Impact of coating and grooving on mechanical performance of bamboo-reinforced concrete","authors":"Md Mahmud Siddique,&nbsp;Md Shariful Islam,&nbsp;Md Arifuzzaman","doi":"10.1016/j.hybadv.2025.100521","DOIUrl":"10.1016/j.hybadv.2025.100521","url":null,"abstract":"<div><div>This study pioneers the synergistic effects of surface coating and mechanical grooving on bamboo-reinforced concrete. Bambusa balcooa strips were treated with 6 % boric acid and coated with water sealer. In compression, plain bamboo strips increased compressive strength by 40 % over unreinforced concrete, but coating slightly reduced this gain. Coated grooved specimens exhibited the highest compressive toughness. In flexure, coated grooved bamboo achieved 222 % higher flexural toughness than unreinforced concrete, with grooving significantly improving flexural strength (9.25 % increase in coated grooved vs. grooved without coating) and modulus (67.44 % higher). The combined treatment optimized interfacial bonding and energy absorption, as confirmed by failure analysis. These findings establish bamboo-reinforced composites as sustainable, high-performance alternatives for construction, with coated grooved bamboo offering unprecedented toughness enhancement.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"11 ","pages":"Article 100521"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of Ag/rGO-based conductive concrete for enhanced capacitive deionization performance 增强电容去离子性能的银/硅基导电混凝土的研制
Hybrid Advances Pub Date : 2025-12-01 Epub Date: 2025-11-10 DOI: 10.1016/j.hybadv.2025.100576
Zahraa Naji Kareem, Ahmed Ali Moosa, Ammar A.H. Al-Filfily
{"title":"Development of Ag/rGO-based conductive concrete for enhanced capacitive deionization performance","authors":"Zahraa Naji Kareem,&nbsp;Ahmed Ali Moosa,&nbsp;Ammar A.H. Al-Filfily","doi":"10.1016/j.hybadv.2025.100576","DOIUrl":"10.1016/j.hybadv.2025.100576","url":null,"abstract":"<div><div>This study explores the development of conductive concrete incorporating silver–reduced graphene oxide (Ag/rGO) nanocomposites for application in capacitive deionization (CDI). The material exhibits dual functionality: (i) enhanced electrochemical performance, where the high conductivity facilitates ion transport and electrosorption in CDI systems, and (ii) antimicrobial activity from silver nanoparticles, which can inhibit microbial growth on concrete surfaces and potentially extend service life in water treatment environments. Conductive concrete was fabricated by integrating 2 wt% Ag/rGO into a cementitious matrix to improve electrical conductivity. Electrical performance was assessed over curing periods of 7, 14, and 28 days, revealing a notable increase in conductivity with the inclusion of Ag/rGO, particularly in the 2 % samples compared to conventional concrete. The CDI performance of the composite electrode was evaluated by monitoring the reduction of total dissolved solids (TDS) in saline water under various applied voltages, showing enhanced salt removal rates and stable performance during repeated operation. These findings underscore the potential of Ag/rGO-enhanced conductive concrete as a cost-effective, multifunctional material for sustainable water treatment applications.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"11 ","pages":"Article 100576"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145519533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development and evaluation of modified ZnCr-Shell particulates composite coatings: corrosion, structural, and microhardness properties 改性zncr -壳颗粒复合涂层的开发与评价:腐蚀、结构和显微硬度性能
Hybrid Advances Pub Date : 2025-12-01 Epub Date: 2025-09-25 DOI: 10.1016/j.hybadv.2025.100554
Ojo S.I. Fayomi , Omaji Adakole , Ho Soon Min , Kunle M. Oluwasegun
{"title":"Development and evaluation of modified ZnCr-Shell particulates composite coatings: corrosion, structural, and microhardness properties","authors":"Ojo S.I. Fayomi ,&nbsp;Omaji Adakole ,&nbsp;Ho Soon Min ,&nbsp;Kunle M. Oluwasegun","doi":"10.1016/j.hybadv.2025.100554","DOIUrl":"10.1016/j.hybadv.2025.100554","url":null,"abstract":"<div><div>Corrosion-induced surface degradation in ship hulls necessitates advanced protective solutions. This study develops sustainable composite coatings by electrodepositing coconut shell particles (CSP) into Zn–CrO<sub>3</sub> matrices. This work introduces the novel use of coconut shell waste as a synergistic reinforcement to enhance both the anti-corrosion and mechanical properties of Zn–CrO<sub>3</sub> coatings. Coatings with increasing CSP content (0–6 g/L) were evaluated, demonstrating exceptional performance: Zn–20CrO<sub>3</sub>–6CSP achieved 93.325 Ω polarization resistance (97 % higher than uncoated steel), reduced corrosion rate by 75 % to 2.285 mm/year, and increased hardness by 90 %–259.3 Kgf/mm<sup>2</sup>. Microstructural analysis revealed a <strong>novel, transformative evolution</strong> from porous scale-like formations to compact knot-like structures that physically impede chloride penetration. These enhancements derive from the novel finding of CSP's dual functionality as both a pore-blocking barrier and grain-refining agent. The findings establish CSP as an effective eco-friendly reinforcement for marine coatings, offering superior corrosion protection and mechanical durability through sustainable waste valorization.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"11 ","pages":"Article 100554"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterization of spider cobwebs derived silk fiber as potential decomposable and sustainable strengthening material in polymer based biocomposites 蛛丝纤维作为聚合物基生物复合材料中潜在可分解和可持续增强材料的表征
Hybrid Advances Pub Date : 2025-12-01 Epub Date: 2025-10-08 DOI: 10.1016/j.hybadv.2025.100560
I.O. Oladele , M.A. Ajayi , D.O. Bichang'a , A.I. Fasinu , A.O. Alabi , S.A. Oyegunna , O.F. Abraham
{"title":"Characterization of spider cobwebs derived silk fiber as potential decomposable and sustainable strengthening material in polymer based biocomposites","authors":"I.O. Oladele ,&nbsp;M.A. Ajayi ,&nbsp;D.O. Bichang'a ,&nbsp;A.I. Fasinu ,&nbsp;A.O. Alabi ,&nbsp;S.A. Oyegunna ,&nbsp;O.F. Abraham","doi":"10.1016/j.hybadv.2025.100560","DOIUrl":"10.1016/j.hybadv.2025.100560","url":null,"abstract":"<div><div>Spider cobwebs, nature's unique architecture, hold untapped potential as bio-derived fiber with remarkable structural and chemical properties. This study delves into their intricate composition, revealing a striking 55.67 % silicon oxide (SiO<sub>2</sub>) content, reinforcing their structural rigidity, with calcium oxide (20.16 %) and aluminum oxide (5.26 %) further enhancing mechanical strength and thermal stability. X-ray diffraction (XRD) uncovers a captivating biphasic structure; an amorphous silk fibroin matrix (73.27 %) intertwined with a graphitic crystalline phase (26.74 %), a synergy that fortifies their load-bearing capacity. Fourier-transform infrared (FTIR) spectroscopy highlights proteinaceous elements, showcasing amide bands linked to β-sheet structures, the secret behind the cobwebs' impressive tensile strength. Scanning electron microscopy (SEM) revealed the cobweb's nanoscale architecture (20.53 nm) and a bulk density of 1.38 g/cm<sup>3</sup>, energy-dispersive X-ray (EDX) analysis reveals a dynamic organic-inorganic hybrid makeup, dominated by carbon (47.31 %), oxygen (29.32 %), and nitrogen (16.54 %), with traces of iron (5.03 %) adding functional depth. Thus, the characterization of naturally occurring spider cobwebs obtained from their natural state for potential application in biodegradable bio-composites development is expected to add value to this renewable, naturally available, and underutilized bio-waste resource as an alternative to synthetically reeled spider silk. These captivating insights open the door for future research, hinting at the vast potential of spider cobwebs in revolutionizing polymer composites for biomedical as well as cutting-edge material innovations. Notably, the use of cobweb-based silk in multiple clinical fields where it functions as medical sutures, wound dressings and tissue engineering scaffolds are part of the future expectations to meet.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"11 ","pages":"Article 100560"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145319574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fire retardancy of natural fibers: Mechanisms, treatments, and testing methods 天然纤维的阻燃性:机理、处理和测试方法
Hybrid Advances Pub Date : 2025-12-01 Epub Date: 2025-07-26 DOI: 10.1016/j.hybadv.2025.100529
Sawsan Dagher , Boshra Akhozheya , Ali Abu Odeh , Raghad Alyafei , Anood Ahli , Shamsa Alzaabi , Maha Almansoori , Fatima Alhashmi
{"title":"Fire retardancy of natural fibers: Mechanisms, treatments, and testing methods","authors":"Sawsan Dagher ,&nbsp;Boshra Akhozheya ,&nbsp;Ali Abu Odeh ,&nbsp;Raghad Alyafei ,&nbsp;Anood Ahli ,&nbsp;Shamsa Alzaabi ,&nbsp;Maha Almansoori ,&nbsp;Fatima Alhashmi","doi":"10.1016/j.hybadv.2025.100529","DOIUrl":"10.1016/j.hybadv.2025.100529","url":null,"abstract":"<div><div>Natural fibers are increasingly recognized as sustainable alternatives to synthetic fibers in various industries due to their biodegradability and renewability. However, their inherent flammability limits their application in fire-sensitive areas. This review provides a comprehensive overview of fire retardancy mechanisms, methods for enhancing fire resistance, and fire retardant testing protocols for natural fibers. It addresses the combustion behavior of natural fibers, focusing on the roles of cellulose, hemicellulose, and lignin, and explores chemical treatments such as phosphorus-based compounds, bio-based coatings, boron-based additives, and silicon-based fire retardants. Physical and structural modifications, including surface coatings and hybrid fiber reinforcement, are also discussed. Key fire testing protocols, including Limiting Oxygen Index (LOI), Cone Calorimetry, Thermogravimetric Analysis (TGA), and UL-94, are reviewed, along with studies demonstrating the efficacy of various fire retardant treatments. Finally, the review identifies future research directions, such as the design of biodegradable flame retardants and the industrial scalability of sustainable treatments.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"11 ","pages":"Article 100529"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144724515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Amplification of photocatalytic and antimicrobial activities with eco-friendly prepared ZnO nanoparticles 生态友好型ZnO纳米颗粒光催化和抗菌活性的放大研究
Hybrid Advances Pub Date : 2025-12-01 Epub Date: 2025-09-25 DOI: 10.1016/j.hybadv.2025.100557
Priya Paul , Fataha Nur Robel , Newaz Mohammed Bahadur , Sumaya Tabassum , Md Farid Ahmed , Subarna Sandhani Dey , Sanjida Khan , Muhammad Shahriar Bashar , Samina Ahmed , Md. Sahadat Hossain
{"title":"Amplification of photocatalytic and antimicrobial activities with eco-friendly prepared ZnO nanoparticles","authors":"Priya Paul ,&nbsp;Fataha Nur Robel ,&nbsp;Newaz Mohammed Bahadur ,&nbsp;Sumaya Tabassum ,&nbsp;Md Farid Ahmed ,&nbsp;Subarna Sandhani Dey ,&nbsp;Sanjida Khan ,&nbsp;Muhammad Shahriar Bashar ,&nbsp;Samina Ahmed ,&nbsp;Md. Sahadat Hossain","doi":"10.1016/j.hybadv.2025.100557","DOIUrl":"10.1016/j.hybadv.2025.100557","url":null,"abstract":"<div><div>Due to the alarming increase in wastewater pollution brought on by industrial expansion, economically and environmentally appropriate solutions are required. The present research used a green co-precipitation approach to create zinc oxide nanoparticles (ZnO-NPs) from five distinct plant extracts and assess their antibacterial and photocatalytic properties. Several models, including the Scherrer equation, LSLMSE, Monshi-Scherrer model, Williamson-Hall model, Size-strain plot approach, and Halder-Wagner model, were used to determine the crystallite size from X-ray diffractometer (XRD) data. The Monshi-Scherrer model yielded the highest accurate crystallite size estimation among all. FTIR spectroscopy was used to confirm the functional groups responsible for the stability and production of nanoparticles. With a maximum degradation efficiency of 90.66 % in 90 min, the photocatalytic activity was evaluated using 10 ppm Congo Red under time variation. Furthermore, antibacterial tests showed notable action against <em>S. aureus</em>, <em>S. abony</em>, and <em>L. monocytogenes</em>, underscoring the promise of ZnO nanoparticles in biomedical and environmental applications. Utilizing thermogravimetric analysis (TGA), the manufactured composites' degradation temperature has reached 720 °C. Under 110 nm, FESEM study indicated spherical and aggregated morphologies, while UV–Vis analysis showed a smaller optical bandgap that was advantageous for improved electrochemical and catalytic performance.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"11 ","pages":"Article 100557"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance of natural abaca fiber composites in water-rich environments: A sustainable solution for tropical infrastructure 天然abaca纤维复合材料在富水环境中的性能:热带基础设施的可持续解决方案
Hybrid Advances Pub Date : 2025-12-01 Epub Date: 2025-11-01 DOI: 10.1016/j.hybadv.2025.100573
Ikramullah Zein , Mohd. Iqbal , Ikramullah Muhammad , H.P.S. Abdul Khalil , Samsul Rizal
{"title":"Performance of natural abaca fiber composites in water-rich environments: A sustainable solution for tropical infrastructure","authors":"Ikramullah Zein ,&nbsp;Mohd. Iqbal ,&nbsp;Ikramullah Muhammad ,&nbsp;H.P.S. Abdul Khalil ,&nbsp;Samsul Rizal","doi":"10.1016/j.hybadv.2025.100573","DOIUrl":"10.1016/j.hybadv.2025.100573","url":null,"abstract":"<div><div>Abaca fiber-reinforced composites are increasingly utilized in applications exposed to wet or humid conditions due to their biodegradability and mechanical performance. This study evaluates the influence of water immersion on the tensile and flexural properties of abaca composites with three fiber orientations: woven, unidirectional, and random. Composites were fabricated using a hand lay-up technique followed by cold pressing at 19.6 bars for 24 h. Each orientation was tested using five specimens under three conditions: dry (no immersion), after one week, and after two weeks of immersion in distilled water. All samples maintained a constant density when in a dry state. The unidirectional composites absorbed the most water, while the woven configuration showed the highest thickness swelling. Water immersion significantly reduced tensile strength across all orientations. After one week, the woven samples exhibited the highest ultimate tensile strength (UTS), but after two weeks, the unidirectional composites retained the highest UTS. Flexural tests showed increased strain in all orientations due to moisture exposure, with the woven orientation demonstrating the greatest deformation. Scanning electron microscopy (SEM) revealed fiber-matrix debonding in immersed samples, attributed to moisture penetration into the fiber lumens. XRD analysis shows that the water immersion could reduce the crystallinity of the fibers. EDX spectroscopy revealed the major elements of the abaca fiber composite are carbon (C) and oxygen (O). These findings underscore the importance of fiber orientation in the design of moisture-resilient natural composites for sustainable structural applications in humid environments.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"11 ","pages":"Article 100573"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145519532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Antibiofilm activity of phytosynthesized ceria nanoparticles against carbapenem-resistant bacteria 植物合成氧化铈纳米颗粒对碳青霉烯耐药细菌的抗膜活性
Hybrid Advances Pub Date : 2025-12-01 Epub Date: 2025-10-21 DOI: 10.1016/j.hybadv.2025.100567
Huda M. Mahmood , Mawlood M. Ali , Bilal J.M. Aldahham , Louay M. Al-Ani
{"title":"Antibiofilm activity of phytosynthesized ceria nanoparticles against carbapenem-resistant bacteria","authors":"Huda M. Mahmood ,&nbsp;Mawlood M. Ali ,&nbsp;Bilal J.M. Aldahham ,&nbsp;Louay M. Al-Ani","doi":"10.1016/j.hybadv.2025.100567","DOIUrl":"10.1016/j.hybadv.2025.100567","url":null,"abstract":"<div><div>The current study explored the effect of phytosynthesized nanoparticles as an anti-biofilm agent for various carbapenem-resistant local isolates. The bottom-up technique was utilized to create the phytosynthesized nanozyme, which was reduced and capped using cerium nitrate and <em>Moringa oleifera</em>. The physicochemical characterization was conducted using UV absorbance, XRD, EDX, and FE-SEM. The results confirmed the formation of nanoceria.</div><div>Out of fifty Gram-negative and positive carbapenem-resistant clinical local isolates, 50 % were found to produce biofilm, which was characterized by microscopic, morphological, and biochemical methods, and confirmed by using the VITEK® 2 COMPACT system, indicating that these isolates belong to the genera <em>Pseudomonas, E. coli, Klebsiella pneumoniae, Proteus mirabilis, and Staphylococcus epidermidis</em>. Five isolates were selected for inclusion in this study due to their strong biofilm production, and treated with phytosynthesized nanoceria nanozyme (5, 10, 20, 40, 80, and 100 ppm), compared to the control.</div><div>The Analysis of Variance (ANOVA) indicated that treatments with different concentrations of nanozyme had a significant effect on biofilm formation (p &lt; 0.02). The same analysis revealed that the differences in impact between various clinical isolates were also highly significant (p &lt; 0.01). The comparison of means for different concentrations indicated significant differences as follows: (100 and 10), (80 and 10), (40 and 10), (control and 80), and (control and 100), with P-values of 0.007, 0.01, 0.02, 0.02, and 0.01, respectively. Additionally, significant differences were observed between <em>Pseudomonas</em> and the other clinical isolates, with P-values of 0.008, 0.001, and 0.007 for the differences between <em>Pseudomonas</em> and E. coli, <em>Pseudomonas</em> and <em>Klebsiella</em>, and <em>Pseudomonas</em> and <em>Proteus</em>, respectively. Meanwhile, no significant differences were noted among the other isolates included in the study, also between <em>Pseudomonas</em> and <em>E. coli, Klebsiella</em>, and <em>Proteus</em>, with P-values of 0.008, 0.001, and 0.007, respectively. No significant differences were observed among the other isolates included in the study.</div><div>In conclusion, eco-friendly phytosynthesized nano cerium demonstrates its ability to disrupt membranes and prevent biofilm formation. Nanoceria has a highly significant effect in most concentrations against different Gram-negative and positive biofilm-producing bacteria.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"11 ","pages":"Article 100567"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145361017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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