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Articles 601 - 630 of 16662

Full-Text Articles in Engineering

Properties And Printability Of Polylactic Acid Films : An Effect Of Polyglutamate Coated Natto As A Bio-Plasticizer, Natrata Thitinardwong, Thira Chavarnakul, Kawee Srikulkit Jan 2026

Properties And Printability Of Polylactic Acid Films : An Effect Of Polyglutamate Coated Natto As A Bio-Plasticizer, Natrata Thitinardwong, Thira Chavarnakul, Kawee Srikulkit

Journal of Metals, Materials and Minerals

Polylactic acid (PLA) film, a biodegradable alternative to petroleum-based plastics, has gained significant attention for sustainable packaging applications. However, its limited screen-printability remains a barrier to broader commercial use. This study aims to enhance the screen-printability of PLA film by incorporating a polyglutamate coated natto (designated as Nat-M). PLA/Nat-M films having 1%, 3%, and 5% Nat-M were prepared and evaluated for their key performance indicators, including ink adhesion (ASTM D3359), tone reproduction accuracy, and printing resolution. The screen-printing resolution was optimized between 400 DPI and 500 DPI (dots per inch) to achieve optimal tone reproduction and edge sharpness. Additionally, ink …

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A Top-Electrode-Based Liquid-Solid Triboelectric Nanogenerator For Energy Harvesting And Ethanol Detection, Subrat Bhol, Nakul Charan Sahu, Sunit Gaurav Mohanty, Vicky Raj Maddala, Basanta Kumar Panigrahi, Premkumar Bhosale Jan 2026

A Top-Electrode-Based Liquid-Solid Triboelectric Nanogenerator For Energy Harvesting And Ethanol Detection, Subrat Bhol, Nakul Charan Sahu, Sunit Gaurav Mohanty, Vicky Raj Maddala, Basanta Kumar Panigrahi, Premkumar Bhosale

Journal of Metals, Materials and Minerals

Liquid-solid triboelectric nanogenerators (LS-TENGs) offer a promising avenue for self-powered energy harvesting and sensing by exploiting contact electrification at fluid-dielectric interfaces, where droplet dynamics drive charge separation for electrical output without external power. In this work, a top-electrode LS-TENG was fabricated using a polytetrafluoroethylene (PTFE) film on a PMMA substrate with deionised water droplets, achieving an open-circuit voltage of ‒3.4 V, short-circuit current of 3.6 μA, and peak power of 1.48 nW at 100 MΩ under optimised conditions of 2 cm drop height, 45° tilt, and 50 μL volume. Performance scaled with droplet kinetics and volume due to enhanced contact …

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Strategic Optimization Of Plasticizers, Fillers, And Blend Ratios For Enhanced Performance Of Dynamically Cured Epoxidized Natural Rubber (Enr)/Polypropylene (Pp) Thermoplastic Vulcanizates, Azizon Kaesaman, Anuwat Worlee, Charoen Nakason Jan 2026

Strategic Optimization Of Plasticizers, Fillers, And Blend Ratios For Enhanced Performance Of Dynamically Cured Epoxidized Natural Rubber (Enr)/Polypropylene (Pp) Thermoplastic Vulcanizates, Azizon Kaesaman, Anuwat Worlee, Charoen Nakason

Journal of Metals, Materials and Minerals

This study introduces an innovative methodology for optimizing oil, plasticizer, filler, and blend proportions in epoxidized natural rubber with 20 mol% epoxide (ENR-20) and polypropylene (PP) thermoplastic vulcanizates (TPVs), aiming to achieve superior rheological, mechanical, morphological, and thermal performance. By leveraging paraffinic oil, epoxidized soybean oil, and phthalate-based plasticizers, the research investigates their influence on tensile strength, elasticity, and processability. Among the oils and plasticizers evaluated, paraffinic oil demonstrated the most effective plasticizing performance, offering superior flexibility and elasticity. Various paraffinic oil loadings (15 phr, 25 phr, 30 phr, 35 phr, 40 phr, 45 phr, 50 phr, and 75 phr) …

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Impact Of Chromium Substitution On Structural And Magnetic Properties Of Mnbi-Based Melt-Spun Ribbons, Anh Kha Vuong, Triet Minh Dang, Truong Xuan Nguyen, Duy Anh Vo Nguyen, Hai Van Pham, Nam Hoai Nguyen, Nam Hong Pham, Oanh Kim Thi Vuong, Tan Nhut Nguyen Le, Tuan Van Dinh, Nam Thanh Tran Nguyen, Nhan Thi Tran, Trung Quoc Nguyen, Nhan Thi Tran, Trung Quoc Nguyen, Lu Wei, Vuong Van Nguyen Jan 2026

Impact Of Chromium Substitution On Structural And Magnetic Properties Of Mnbi-Based Melt-Spun Ribbons, Anh Kha Vuong, Triet Minh Dang, Truong Xuan Nguyen, Duy Anh Vo Nguyen, Hai Van Pham, Nam Hoai Nguyen, Nam Hong Pham, Oanh Kim Thi Vuong, Tan Nhut Nguyen Le, Tuan Van Dinh, Nam Thanh Tran Nguyen, Nhan Thi Tran, Trung Quoc Nguyen, Nhan Thi Tran, Trung Quoc Nguyen, Lu Wei, Vuong Van Nguyen

Journal of Metals, Materials and Minerals

MnBi-based magnetic materials and magnets are of significant interest due to their magnetism without rare earth elements and their ability to replace Nd-Fe-B in high-temperature magnet applications due to its unique feature of enhancing coercivity in the range of 100℃ to 250℃, enabling their energy product (BH)max comparable to NdFeB magnets despite their moderate spontaneous magnetization Msp. To adjust the magnetic properties of MnBi magnets, various elements have been doped to regulate magnetic interactions among the atoms, which subsequently alters Msp and the magneto-crystalline anisotropy energy. In this work, we investigate the effects of chromium doping on the magnetic properties …

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Cold Sintering-Assisted Low Temperature Fabrication Of Dense Ba5 Nb4 O15 Ceramics, Usa Sukkha, Apichayaporn Teandam, Phakkhananan Pakawanit, Phitsamai Kamonpha, Wanwilai Vittayakorn, Phieraya Pulphol, Naratip Vittayakorn Jan 2026

Cold Sintering-Assisted Low Temperature Fabrication Of Dense Ba5 Nb4 O15 Ceramics, Usa Sukkha, Apichayaporn Teandam, Phakkhananan Pakawanit, Phitsamai Kamonpha, Wanwilai Vittayakorn, Phieraya Pulphol, Naratip Vittayakorn

Journal of Metals, Materials and Minerals

This study presents a novel approach for fabricating Ba5Nb4O15 (BNO) ceramics at low sintering temperatures via the cold sintering process (CSP), using Ba(OH)2∙8H2O (BOH) as a transient liquid phase. CSP was performed under an external pressure of 10 MPa with a sintering temperature range of 150℃ to 300℃. Optimally, BNO-BOH ceramics achieved a relative density of 93.7 ± 0.43% when sintered at 250℃ for 1 h. Scanning electron microscopy (SEM) suggested that particle densification occurred via a dissolution-precipitation process, which filled pores and formed necks between particles. The study demonstrates that the residual liquid content is crucial for ceramic densification. …

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Fabrication Of A Chitosan‒Fe3o4/Activated Carbon/Tio2 Nanocomposite As A Pb(Ii) Heavy Metal Adsorbent, Berliantty Warim Putri, Arif Hidayat, Lya Rizka Herawati, Poppy Puspitasari, Nandang Mufti, Yap Wing Fen, Muhammad Safwan Abdul Aziz, Tahta Amrillah, Ahmad Taufiq Jan 2026

Fabrication Of A Chitosan‒Fe3o4/Activated Carbon/Tio2 Nanocomposite As A Pb(Ii) Heavy Metal Adsorbent, Berliantty Warim Putri, Arif Hidayat, Lya Rizka Herawati, Poppy Puspitasari, Nandang Mufti, Yap Wing Fen, Muhammad Safwan Abdul Aziz, Tahta Amrillah, Ahmad Taufiq

Journal of Metals, Materials and Minerals

Nowadays, water pollution by heavy metal Pb(II) is a significant issue in many countries, including Indonesia. To overcome this problem, a suitable and efficient waste treatment method is necessary. Therefore, in this work, Fe3O4/AC/TiO2 nanocomposite modified with chitosan (CS) for the treatment of Pb (II) waste were investigated. CS was used due to its OH and NH2 functional groups, which enable the formation of a new hybrid nanocomposite that can be used repeatedly. To reduce production costs, environmentally friendly, raw natural materials, such as iron sand, coconut shells, and shrimp shells, were employed. The XRD characterization results indicate that the …

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Advanced Hemp-Based Hybrid Composites: A Study On The Influence Of Various Nanofillers On Mechanical And Morphological Properties, Velmurugan Ganesan, Jasgurpreet Singh Chohan, Muthukumar V., Nagaraj M., Lakshmi Narayana S. Jan 2026

Advanced Hemp-Based Hybrid Composites: A Study On The Influence Of Various Nanofillers On Mechanical And Morphological Properties, Velmurugan Ganesan, Jasgurpreet Singh Chohan, Muthukumar V., Nagaraj M., Lakshmi Narayana S.

Journal of Metals, Materials and Minerals

This study investigates the mechanical and microstructural attributes of epoxy composites with hemp fiber reinforcements and incorporated aluminum oxide (Al2O3), silicon dioxide (SiO2), and magnesium oxide (MgO) nanoparticles at different weight fractions of 0.5 wt%, 1.0 wt%, and 1.5 wt%. Nano-fillers remarkably improved the composite performance, as indicated by tensile and flexural tests conducted by ASTM D3039 and ASTM D790 standards. The composite containing 1.5 wt% Al2O3 outperformed other nano filled composites with a tensile strength of 64 MPa and tensile modulus of 3.6 GPa, versus 52 MPa and 3.0 GPa for the unfilled hemp/epoxy composite. In parallel, flexural strength …

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Sintering Behavior And Mechanical Properties Of Ha-Ysz-Ti Composite Sintered By Spark Plasma Sintering, Seyed Mohsen Fatemi, Iman Mobasherpour, Leila Nikzad, Mansour Razavi Jan 2026

Sintering Behavior And Mechanical Properties Of Ha-Ysz-Ti Composite Sintered By Spark Plasma Sintering, Seyed Mohsen Fatemi, Iman Mobasherpour, Leila Nikzad, Mansour Razavi

Journal of Metals, Materials and Minerals

This research is aimed to determine the best composition of composite fabricated by Spark Plasma Sintering (SPS) to produce a suitable substituent for bone. The applied powder was prepared by the SPS method and comprises hydroxyapatite (HA), yttria-stabilized zirconia (YSZ), and titanium (Ti). Different percentages of components were used to fabricate the composite samples. X-ray diffraction was used to determine the structural phase of the sintered samples while field emission scanning electron microscopy (FE-SEM) was employed for microstructural analysis of the specimens. The behavior of the samples was investigated during sintering. The gas release, displacements, and porosity percentage of the …

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Antibacterial Characterization Of Ciprofloxacin-Doped Electrospun Of Low Molecular Weight Polyethylene Oxide (Peo) And Sodium Alginate (Naalg) Nanofibers, Phuphinee Niyomchon, Treesukon Treebupachatsakul, Kasama Srirussamee Jan 2026

Antibacterial Characterization Of Ciprofloxacin-Doped Electrospun Of Low Molecular Weight Polyethylene Oxide (Peo) And Sodium Alginate (Naalg) Nanofibers, Phuphinee Niyomchon, Treesukon Treebupachatsakul, Kasama Srirussamee

Journal of Metals, Materials and Minerals

Producing nanofibers using the electrospinning technique is a developed method that is widely used and of significant interest nowadays. This technique can be applied using various types of polymers. This research aimed to investigate the antibacterial PEO-NaAlg nanofiber fabrication. The fiber fabrication was examined under various viscosities of electrospinning solution. The electrospun nanofiber fabrication focuses on blending polyethylene oxide (PEO) with a molecular weight of 200-300 kDa, mixed with sodium alginate (NaAlg) of three different viscosities: 150 cP, 300 cP, and 730 cP to study how the viscosity of the solution affects the morphology of electrospun nanofibers. The PEO-NaAlg electrospun …

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Effects Of Various Heat Treatment Cycles On Mechanical Properties And Wear Resistance Of 65mn Carbon Steel, Amir Abbas Mojahedi, Seyed Abdolkarim Sajjadi, Fatemehsadat Sayyedan Jan 2026

Effects Of Various Heat Treatment Cycles On Mechanical Properties And Wear Resistance Of 65mn Carbon Steel, Amir Abbas Mojahedi, Seyed Abdolkarim Sajjadi, Fatemehsadat Sayyedan

Journal of Metals, Materials and Minerals

The aim of the present study is to investigate the effect of various heat treatment cycles on mechanical properties and wear resistance of 65Mn carbon steel. For this purpose, five different heat treatment cycles including normalizing, austenitizing, quenching, and tempering were performed at different austenitization temperatures and tempering times. Subsequently, effects of the parameters on tensile strength, toughness, hardness, and wear resistance of the heat-treated samples were investigated. X-ray diffraction (XRD) and scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS) were employed to analyze microstructure of heat-treated samples. To study the wear resistance of the samples after …

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Two-Step Sputtering For Depositing Smooth And Thin Zno Films On Non-Heated, Non-Epiready Pet Substrates, Nattaya Tajina Yossapong, Annop Klamchuen, Kittipong Tantisantisom, Ekkaphop Ketsombun, Taworn Intaro, Sakuntam Sanorpim, Warakorn Yanwachirakul Jan 2026

Two-Step Sputtering For Depositing Smooth And Thin Zno Films On Non-Heated, Non-Epiready Pet Substrates, Nattaya Tajina Yossapong, Annop Klamchuen, Kittipong Tantisantisom, Ekkaphop Ketsombun, Taworn Intaro, Sakuntam Sanorpim, Warakorn Yanwachirakul

Journal of Metals, Materials and Minerals

Highly crystalline, smooth-surface, and thin zinc oxide (ZnO) films have been successfully deposited on flexible polyethylene terephthalate (PET) substrates using an optimized two-step RF magnetron sputtering technique at ambient temperature. The PET used in this study was a commercially available overhead projector film, which was not epiready-grade and had a lower melting point (~150℃). This issue made high-quality deposition more challenging. In the first step, a thin ZnO buffer layer was deposited at low RF power to provide a smooth and thermally stable surface. This layer served as both a structural template and a thermal barrier during the subsequent high-power …

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Sodium Alginate/Aloe Vera/Mangosteen Peel Extraction Hydrogel Composite Films With Anti-Staphylococcal Properties As A Promising Alternative Material In Biomedical Applications, Pruss Chimwai, Poonyarat Apikarnsakulchai, Tirawit Jindaratanaporn, Witsanu Liangaumnuay, Thitima La-Ongthitirat, Purin Somnuake, Pattara Somnuake Jan 2026

Sodium Alginate/Aloe Vera/Mangosteen Peel Extraction Hydrogel Composite Films With Anti-Staphylococcal Properties As A Promising Alternative Material In Biomedical Applications, Pruss Chimwai, Poonyarat Apikarnsakulchai, Tirawit Jindaratanaporn, Witsanu Liangaumnuay, Thitima La-Ongthitirat, Purin Somnuake, Pattara Somnuake

Journal of Metals, Materials and Minerals

This study focuses on the development of alternative biodegradable hydrogel films from sodium alginate as a matrix and curing into a hydrogel by CaCl2. Thus, the aloe vera (AV) and the crude extract of mangosteen peels (MPE) were additionally blended. The polymer films were prepared using the casting film process, and their morphology, functional groups, water absorption, antibacterial, thermal, and mechanical properties were characterized using SEM, FTIR, water swelling test, disk diffusion method, DSC-TGA, and UTM. The results demonstrated the heterogeneity between the composites and the polymer matrix, and a lower polarity from the decreased %water swelling from 45% to …

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Li5feo4 As A Cathode Prelithiation Additive : Doping Engineering And First-Principles Research, Zixiang Li, Zile Zou, Jialan Li, Chennan Ma, Jiarun Li, Xiaoyu Liu, Jin Yi, Jianhui Li Jan 2026

Li5feo4 As A Cathode Prelithiation Additive : Doping Engineering And First-Principles Research, Zixiang Li, Zile Zou, Jialan Li, Chennan Ma, Jiarun Li, Xiaoyu Liu, Jin Yi, Jianhui Li

Journal of Metals, Materials and Minerals

During the initial charge-discharge cycle, irreversible loss of active lithium (~ 5% to 15%) severely affects the battery energy density and shortens cycle life of lithium‑ion batteries (LIBs). Prelithiation strategy has gradually become an effective approach to compensate for the irreversible loss of active lithium. Lithium ferrate (Li5FeO4, LFO) is considered to be a promising cathode prelithiation additive due to its high theoretical capacity (867 mAh·g‒1), suitable delithiation potential (3.5 V to 4.1 V), and competitive raw material. However, the application of LFO is limited by the its properties including poor air stability, low electronic conductivity, and incomplete delithiation. Currently, …

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Synergistic Adsorption–Photocatalysis Of Activated Carbon/Titanium Dioxide Composite Derived From Rice Husk Ash Under Ultraviolet-C Irradiation, Bang-Tam Thi Dao, Do Trung Nguyen, Nhien Hon Le, Chi-Nhan Ha-Thuc Jan 2026

Synergistic Adsorption–Photocatalysis Of Activated Carbon/Titanium Dioxide Composite Derived From Rice Husk Ash Under Ultraviolet-C Irradiation, Bang-Tam Thi Dao, Do Trung Nguyen, Nhien Hon Le, Chi-Nhan Ha-Thuc

Journal of Metals, Materials and Minerals

Rice husk ash (RHA), an abundant biomass residue, was employed as a sustainable precursor for synthesizing activated carbon (AC) and its TiO2-based photocatalyst composite. AC was produced via ultrasonication-assisted NaOH activation of KOH-impregnated biochar, yielding a highly porous material with a large surface area. Titanium dioxide nanoparticles were synthesized from titanium (IV) isopropoxide (TTIP) and subsequently immobilized onto AC to form the AC/TiO2 composite. Structural and textural analyses (XRD, FT-IR, BET, SEM–EDS) confirmed the presence of anatase TiO2 uniformly distributed within the AC framework while preserving its porous architecture. The photocatalytic activity of the composite was assessed using Basic Blue …

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Role Of Alkali And Alkaline-Earth Doped In Zeolite A-Derived From Industrial Waste Toward Direct Ethanol Dehydrogenation To Acetaldehyde, Darunee Sukchit, Malee Prajuabsuk, Chan Inntam, Saisamorn Lumlong, Bongkochawan Pakamwong, Auradee Punkvang, Duangkamol Gleeson, Pantita Trongjitraksa, Paramasivam Shanmugam, Supakorn Boonyuen, Niramol Juntarachat, Sasijuta Wattanarach, Parjaree Thavorniti, Bunjerd Jongsomjit, Pornpan Pungpo Jan 2026

Role Of Alkali And Alkaline-Earth Doped In Zeolite A-Derived From Industrial Waste Toward Direct Ethanol Dehydrogenation To Acetaldehyde, Darunee Sukchit, Malee Prajuabsuk, Chan Inntam, Saisamorn Lumlong, Bongkochawan Pakamwong, Auradee Punkvang, Duangkamol Gleeson, Pantita Trongjitraksa, Paramasivam Shanmugam, Supakorn Boonyuen, Niramol Juntarachat, Sasijuta Wattanarach, Parjaree Thavorniti, Bunjerd Jongsomjit, Pornpan Pungpo

Journal of Metals, Materials and Minerals

In this study, a sustainable catalytic route for converting ethanol into value-added acetaldehyde was developed using alkali- and alkaline earth-modified zeolite A synthesized from sugarcane bagasse ash (SCBA). Zeolite A was first prepared via alkaline fusion followed by hydrothermal crystallization and subsequently doped with 1 wt% K+ or Ca2+ using incipient wetness impregnation. Comprehensive physicochemical characterization (X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), Fourier transform infrared spectroscopy (FTIR), nitrogen physisorption (N2 physisorption), ammonia temperature-programmed desorption (NH3-TPD), and carbon dioxide temperature-programmed desorption (CO2-TPD)) confirmed the formation of a highly crystalline LTA framework with tunable …

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Graphene-Based Materials From Liquid Phase Exfoliation Of Graphite Using Mangosteen-Peel Extract : Experiments And Molecular Simulation, Piyaphat Thepphot, Narissara Karakate, Panu Danwanichakul Jan 2026

Graphene-Based Materials From Liquid Phase Exfoliation Of Graphite Using Mangosteen-Peel Extract : Experiments And Molecular Simulation, Piyaphat Thepphot, Narissara Karakate, Panu Danwanichakul

Journal of Metals, Materials and Minerals

The conventional Hummers method for graphene production requires large quantities of hazardous chemicals, causing environmental impacts and sustainability concerns. This study investigated mangosteen-peel extract as a natural alternative in liquid phase exfoliation of graphite, exploiting the structural similarity between condensed tannins and graphite, which enables π−π interactions. Four exfoliation processes were studied: shear force via a homogenizer (9,500 rpm and 14,000 rpm for 41 min), sonication using an ultrasound bath (200 W and 400 kHz) for 2 h and 3 h at 50℃ and their sequential combinations. The results confirmed successful graphite exfoliation yielding samples with I2D/IG ratios of 0.51 …

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Sustainable Lightweight Foams From Hazardous Aluminum Dross, Chayapat Weerapakdee, Makoto Nanko, Yen-Ling Kuo, Sukasem Watcharamaisakul, Kaito Suzuki, Seiryu Suzuki, Siriwan Chokkha Jan 2026

Sustainable Lightweight Foams From Hazardous Aluminum Dross, Chayapat Weerapakdee, Makoto Nanko, Yen-Ling Kuo, Sukasem Watcharamaisakul, Kaito Suzuki, Seiryu Suzuki, Siriwan Chokkha

Journal of Metals, Materials and Minerals

Aluminum dross is a hazardous byproduct from aluminum industry that causes environmental problems and high disposal cost. This work presents a sustainable route to upcycle secondary aluminum dross into lightweight ceramic foams for insulating refractory applications. Secondary aluminum dross powder was blended with polyethylene (PE) pore-forming agents (30 vol% to 70 vol%) and polyvinyl alcohol (PVA) binder added as a 7.5 wt% aqueous solution (binder contents: 1 vol% and 3 vol%), followed by pressing and sintering at 1400℃. Increasing PE systematically reduced bulk density and increased open porosity. At 70 vol% PE, the foams reached a bulk density of 0.94 …

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Magnetocaloric Effect Of Gdtbdyerpr Rare-Earth High-Entropy Alloy, Yu Liu, Lei Gao, Jun Peng, Haitao Guo Jan 2026

Magnetocaloric Effect Of Gdtbdyerpr Rare-Earth High-Entropy Alloy, Yu Liu, Lei Gao, Jun Peng, Haitao Guo

Journal of Metals, Materials and Minerals

In this study, a GdTbDyErPr rare-earth high-entropy alloy (RE HEA) was successfully synthesized and its magnetic properties and magnetocaloric effect (MCE) were systematically investigated. The results indicate that the as-cast GdTbDyErPr RE HEA exhibits a single-phase hexagonal close-packed (HCP) structure with lattice parameters of a = 3.609 Å and c = 5.734 Å. Based on large parameter Ω, high mixing entropy (ΔSmix), and small parameters δ and εi, it can be inferred that the GdTbDyErPr alloy forms a disordered solid solution. The GdTbDyErPr RE HEA undergoes a first-order magnetic transition near about 143 K. The parameters |∆ |, RC, and …

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Investigating The Effects Of Lamno. On The Morphology, Structural And Optical Properties Of Epoxy-Based Plastic Scintillators, Yeni Febrianti, Airine Hijrah Handayani, Marzuki Naibaho, Phahul Zhemas Zul Nehan, Zulkarnain -, Arbi Dimyati, Budhy Kurniawan Jan 2026

Investigating The Effects Of Lamno. On The Morphology, Structural And Optical Properties Of Epoxy-Based Plastic Scintillators, Yeni Febrianti, Airine Hijrah Handayani, Marzuki Naibaho, Phahul Zhemas Zul Nehan, Zulkarnain -, Arbi Dimyati, Budhy Kurniawan

Journal of Metals, Materials and Minerals

Plastic scintillators are widely used in radiation detection due to their low cost, fast response, and ease of fabrication, although their performace is often limited by low density, low atomic number, make them less efficient for applications requiring high-energy radiation. In this study, LaMnO3 was synthesized using the hydrothermal method and employed as a dopant to enhance the optical and scintillation properties of epoxy-based plastic scintillators. Structural, morphological, and optical characterizations of LaMnO3 were carried out using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), energy-dispersive spectroscopy (EDS), UV-Vis and  photoluminescence (PL) spectroscopy. The results confirm that …

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Effect Of Mgo On Crawling And Physical Properties In Ceramic Glazes, Thongpanchang Timclub, Pathitta Anuraksombat, Thatree Muangkaew, Niti Yongvanich Jan 2026

Effect Of Mgo On Crawling And Physical Properties In Ceramic Glazes, Thongpanchang Timclub, Pathitta Anuraksombat, Thatree Muangkaew, Niti Yongvanich

Journal of Metals, Materials and Minerals

This study attempted to seek and verify the scientific aspects responsible for crawling in ceramic glazes. The selected additive was magnesium oxide (MgO). The glazes were applied on porcelain biscuits and fired between 1100℃ and 1300℃. The degree of crawling was enhanced with increasing amount of MgO, which was accompanied by formation of forsterite (Mg2SiO4) as a major phase. Complete island separation was achieved with 10 wt% MgO with good wettability and shiny surface. The morphology of the glaze demonstrated this phase as small crystals within the glaze layer. Addition of MgO resulted in a continuous decrease in the thermal …

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Enhancing Aqueous Solubility Of A Psoralen Derivative Via Cyclodextrin Inclusion Complexation : In Silico And In Vitro Study, Gulzaib Basharat, Saba Ali, Pattharamon Chaikhun, Choosak Jaroenrit, Kuakarun Krusong, Thanthapatra Bunchuay, Tanatorn Khotavivattana, Thanyada Rungrotmongkol Jan 2026

Enhancing Aqueous Solubility Of A Psoralen Derivative Via Cyclodextrin Inclusion Complexation : In Silico And In Vitro Study, Gulzaib Basharat, Saba Ali, Pattharamon Chaikhun, Choosak Jaroenrit, Kuakarun Krusong, Thanthapatra Bunchuay, Tanatorn Khotavivattana, Thanyada Rungrotmongkol

Journal of Metals, Materials and Minerals

N-(4-Bromobenzoyl)-8-methoxypsoralen-4-amine (BNB) is a psoralen derivative with potent cytotoxic activity against breast cancer cells but with limited pharmaceutical application and therapeutic potential due to its extremely low aqueous solubility. To overcome this limitation, β-cyclodextrin (βCD) and its derivatives dimethyl-βCD (DMβCD), hydroxypropyl-βCD (HPβCD), and sulfobutylether-βCD (SBEβCD) were investigated as carriers to enhance BNB's aqueous solubility via cyclodextrin inclusion complexation. A combined computational–experimental strategy was employed, integrating molecular docking, 500-ns all-atom molecular dynamics simulations in quintuplicate runs (2.5 µs in total), and experimental validation by phase solubility analysis, scanning electron microscopy (SEM), and differential scanning calorimetry (DSC). Docking and simulations revealed …

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The Performance Of The Heat Affected Zone Of 9% Ni Steel Narrow Gap Joint Performed By The Gmaw Process With Rotating Electrode, Jorge Carlos Ferreira Jorge, Jeferson Frederico Monteiro Costa, Matheus Campolina Mendes, Luís Felipe Guimarães De Souza, Hiron Akira Yamada Magalhães, Leonardo Sales Araújo Jan 2026

The Performance Of The Heat Affected Zone Of 9% Ni Steel Narrow Gap Joint Performed By The Gmaw Process With Rotating Electrode, Jorge Carlos Ferreira Jorge, Jeferson Frederico Monteiro Costa, Matheus Campolina Mendes, Luís Felipe Guimarães De Souza, Hiron Akira Yamada Magalhães, Leonardo Sales Araújo

Journal of Metals, Materials and Minerals

This work investigates the mechanical properties and microstructural evolution of the heat-affected zone of 9% Ni steel narrow-gap welded joints produced by the GMAW process with a rotating electrode, since no literature on this subject is available. This process is an innovation of the GMAW process, which permits narrow gap welding because the circular motion of the electrode overcomes the main issue of the sidewall's lack of fusion observed in the conventional process. However, the rotation movement of the electric arc imposes a higher peak temperature at the heat affected zone, which can negatively affect the mechanical properties. The joints …

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Synthesis And Characterization Of New Graft Copolymers Based On Ozonized Polyethylene: Comparative Approach Between Mass And Solution Grafting, Mostapha Karaoui, Samira Kharchouf, Houda El Yakoubi, Kaouthar Boumane, Mohammed Assouag Jan 2026

Synthesis And Characterization Of New Graft Copolymers Based On Ozonized Polyethylene: Comparative Approach Between Mass And Solution Grafting, Mostapha Karaoui, Samira Kharchouf, Houda El Yakoubi, Kaouthar Boumane, Mohammed Assouag

Journal of Metals, Materials and Minerals

New graft copolymers were developed from low-density polyethylene (LDPE) and high-density polyethylene (HDPE) following an initial ozonation step to introduce reactive functional groups onto the polymer backbone. Among the two polymers, LDPE demonstrated superior susceptibility to ozonation, making it the preferred substrate for subsequent grafting. Grafting was then performed primarily on ozonized LDPE using various functional monomers, including acrylic acid (AA), 4-vinylpyridine (4VP), acrylonitrile (AN), chloromethylstyrene (CMS), as well as copolymers such as AA–vinylphosphonic acid (AA-co-VPA) and AN–vinylphosphonic acid (AN-co-VPA). Grafting was carried out using both solution and melt techniques. The resulting materials were characterized by elemental analysis and Fourier …

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Enhanced Red Emission Of Gd2moo6:Eu Phosphor-In-Glass Embedded In Sio2-Teo2-Na2o-Bao Matrix For Solid-State Lighting, Patarawagee Yasaka, Winut Wongwan, Seubsakun Khondara, Jakrapong Kaewkhao Jan 2026

Enhanced Red Emission Of Gd2moo6:Eu Phosphor-In-Glass Embedded In Sio2-Teo2-Na2o-Bao Matrix For Solid-State Lighting, Patarawagee Yasaka, Winut Wongwan, Seubsakun Khondara, Jakrapong Kaewkhao

Journal of Metals, Materials and Minerals

Gd2MoO6:Eu3+ phosphor-in-glass (PIG) composites were synthesized by a microwave-assisted melting technique using a 50SiO2:20TeO2:15Na2O:15BaO glass matrix containing 0.00 wt% to 10.00 wt% phosphor. Their structural, optical, and luminescent properties were systematically investigated. X-ray diffraction confirmed the formation of crystalline Gd2MoO6 phases, which became prominent at 5.00 wt% and 10.00 wt%, indicating partial crystallization within the glass network. The density and refractive index increased from 3.621 g∙cm‒3 to 3.774 g∙cm‒3 and 1.535 to 1.692 with higher phosphor loading, suggesting a more compact structure. Absorption spectra showed four characteristic Eu3+ bands at 464 nm, 534 nm, 2088 nm, and 2203 nm, while …

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Hybrid Interface Effect Of G-C3n4/Zno Nanocomposites On The Photoelectrochemical Cathodic Protection Of 304 Stainless Steel In Chloride Solution, Htet Yadanar Soe, Thanate Na Wichean, Jularpar Sunttiprapar, Parichart Chaum, Gasidit Panomsuwan, Oratai Jongprateep, Ratchatee Techapiesancharoenkij Jan 2026

Hybrid Interface Effect Of G-C3n4/Zno Nanocomposites On The Photoelectrochemical Cathodic Protection Of 304 Stainless Steel In Chloride Solution, Htet Yadanar Soe, Thanate Na Wichean, Jularpar Sunttiprapar, Parichart Chaum, Gasidit Panomsuwan, Oratai Jongprateep, Ratchatee Techapiesancharoenkij

Journal of Metals, Materials and Minerals

The development of efficient and environmentally friendly corrosion protection systems for metals in aggressive environments has become a critical area of research, particularly for stainless steel used in marine and industrial applications. In this study, a series of graphitic carbon nitride (g-C3N4) and zinc oxide (ZnO) composites with varying g-C3N4 weight ratios (10 wt% and 30 wt%), are integrated to form heterojunction structures with enhanced charge separation and interfacial activity. The g-C3N4/ ZnO (ZCN) composite thin films were prepared using a facile thermal mixing method and were characterized using XRD, SEM, BET, FTIR, UV-Vis, and PL to confirm their structural, …

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Mechanical And Microstructural Characterization Of Tib2/Zro2 Reinforced Al5052 Nanocomposites For Structural Applications, Saumy Agarwal, Satnam Singh Jan 2026

Mechanical And Microstructural Characterization Of Tib2/Zro2 Reinforced Al5052 Nanocomposites For Structural Applications, Saumy Agarwal, Satnam Singh

Journal of Metals, Materials and Minerals

This study investigates the fabrication and mechanical characterization of Al5052 composites reinforced with nanosized TiB2 and ZrO2 particles via stir casting. Al5052 was chosen for its high strength-to-weight ratio and corrosion resistance, making it suitable for marine and automotive applications. The addition of hard ceramic reinforcements aimed to enhance mechanical properties without severely affecting ductility. Composite samples were tested as per ASTM standards. SEM analysis confirmed sound metallurgical bonding and generally uniform particle distribution. Density tests showed slight differences between theoretical and experimental values, with porosity generally increasing with reinforcement addition, attributed to particle agglomeration at higher loadings. Mechanical testing …

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Green Synthesis And Optimized Annealing Temperature Effects On Zinc Oxide Nanoparticles Using Mango Peel Extract, Supamas Wirunchit, Natchayaporn Sakulpeeb, Woradech Meedech, Sutee Chutipaijit, Wantana Koetniyom Jan 2026

Green Synthesis And Optimized Annealing Temperature Effects On Zinc Oxide Nanoparticles Using Mango Peel Extract, Supamas Wirunchit, Natchayaporn Sakulpeeb, Woradech Meedech, Sutee Chutipaijit, Wantana Koetniyom

Journal of Metals, Materials and Minerals

This study presents the green synthesis of zinc oxide nanoparticles (ZnO-NPs) using mango peel extract (MgE) as a natural reducing and stabilizing agent. Phytochemical extraction was performed with deionized water, ethanol, and methanol for 1 h to 5 h, with deionized water at 4 h yielding the highest flavonoid content. Using zinc nitrate as a precursor, 25 mL of MgE successfully facilitated the synthesis of ZnO-NPs (ZnO-25MgE). It was found that annealing temperature at 400℃ for 6 h produced pure ZnO. The obtained nanoparticles were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), and field emission scanning electron microscopy …

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The Effect Of Granule Composition On The Densification And Strength Of Two Different Compacted 92% Aluminas, Ryan Mccuiston, Kritkaew Somton Jan 2026

The Effect Of Granule Composition On The Densification And Strength Of Two Different Compacted 92% Aluminas, Ryan Mccuiston, Kritkaew Somton

Journal of Metals, Materials and Minerals

High-alumina (Al2O3) ceramics are an important, but sometimes overlooked industrial material. Two 92% alumina spray-dried granules, which contained different sintering aid compositions, were studied. The two alumina granules, called MT and JP, were die compacted to form bend bars and heated at temperatures from 200℃ to 1600℃. The effect of the sintering aid composition on the shrinkage, density, and fracture strength of samples were investigated. It was found that MT samples had a lower density than the JP samples up to 1100℃, due to a greater weight loss following binder removal.  However, between 1200℃ to 1600℃, the MT samples had …

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Eco-Friendly Pva-Walnut Shell-Based Triboelectric Nanogenerator For Biomechanical Energy Harvesting And Self-Powered Touch Sensing, Sabita Tripathy, Gayatri Mohapatra, Arjun Kumar, Manoj Kumar Debnath Jan 2026

Eco-Friendly Pva-Walnut Shell-Based Triboelectric Nanogenerator For Biomechanical Energy Harvesting And Self-Powered Touch Sensing, Sabita Tripathy, Gayatri Mohapatra, Arjun Kumar, Manoj Kumar Debnath

Journal of Metals, Materials and Minerals

The growing demand for sustainable power in wearable electronics necessitates eco-friendly energy harvesting alternatives. Herein, a polyvinyl alcohol-walnut shell (PVA-WS) composite was developed as a biodegradable triboelectric active layer for a single-electrode triboelectric nanogenerator (TENG). Walnut shell powder, a lignocellulosic agricultural byproduct, was incorporated into PVA at an optimised 3 wt%, enhancing surface micro-roughness and charge trapping capability as confirmed by SEM and XRD analyses. The fabricated device yielded a peak output voltage of 130 V, short-circuit current of 390 nA, and maximum power of 20 μW at 500 MΩ under 1 Hz excitation, while also successfully harvesting biomechanical energy …

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Surface Characteristics Of Montmorillonite Reinforced Cellulose Membranes Derived From Pineapple Waste, Naufal Rizky Amasda, Heru Suryanto, Aminnudin Aminuddin, Uun Yanuhar, Nanda Lidya Cinta Aulia Sari, Agus Suyetno, Komarudin Komarudin, Fajar Nusantara, Gaguk Jatisukamto, Aulia Surya Ramadhan Jan 2026

Surface Characteristics Of Montmorillonite Reinforced Cellulose Membranes Derived From Pineapple Waste, Naufal Rizky Amasda, Heru Suryanto, Aminnudin Aminuddin, Uun Yanuhar, Nanda Lidya Cinta Aulia Sari, Agus Suyetno, Komarudin Komarudin, Fajar Nusantara, Gaguk Jatisukamto, Aulia Surya Ramadhan

Journal of Metals, Materials and Minerals

This study aims to investigate the effect of montmorillonite on the surface characteristics and porosity of bacterial nanocellulose (BNC) membranes derived from pineapple peel waste. The bacterial cellulose was synthesized using Acetobacter xylinum using pineapple peel extract as medium component. Bacterial nanocellulose membrane (BNC) was obtained by crushing and homogenizing bacterial cellulose in a high-pressure homogenizer. BNC membrane was reinforced with montmorillonite content of 2 wt% to 8 wt%. The membrane was characterized for its properties using SEM, FTIR, surface roughness tester, tensile tester, water holding capacity test, and BET analysis. The results showed that montmorillonite was well-dispersed within BNC …

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