Engineering Commons^™

Biosynthesis Of Zinc Oxide Nanoparticles Using Water Hyacinth Extracts: Characterization, Evaluation Of Antimicrobial And Dye Removal, Phiphat Sonthongphithak, Chonchanok Muangnapoh, Chalita Ratanatawanate, Teerasak E-Kobon, Akkharadet Piyasaengthong, Piyorot Hongsachart, Manop Sriuttha, Nipaporn Sengkhamparn, Anto Cordelia Tanislaus Anthony Dhanapal, Kitiyaporn Wittayanarakul

Journal of Metals, Materials and Minerals

In nanobiotechnology, synthesizing metal nanoparticles (NPs) using plant extracts has recently been increasing because of eco-friendly and low-cost methods. For this work, zinc oxide nanoparticles (ZnO NPs) have been synthesized by biosynthesis process using water hyacinth extracts (WHE). The water hyacinth (WH) was chosen because the WH is fast-growing and the most toxic aquatic plant in the world. Therefore, this work aims to apply these WHE to be a precursor in the biosynthesis of ZnO NPs (ZnOBio-NPs) based on the research of a sustainable environment. The ZnO NPs synthesized by the WHE were investigated for their antibacterial and photocatalytic activities. …

Natural Wound Dressing Films Prepared From Acetylated Starch/Κ-Carrageenan Blend Incorporated With Mandelic Acid, Wimolsiri Sriphochai, Jutarat Prachayawarakorn

Journal of Metals, Materials and Minerals

Due to several limitations of acetylated starch film for wound dressing applications such as low mechanical properties and no antibacterial activity, acetylated starch film was, therefore, modified by different contents of κ-carrageenan and mandelic acid. Infrared spectra confirmed the presence of κ-carrageenan and mandelic acid in the modified acetylated starch films. In addition, the decreased crystallinity of the carrageenan modified acetylated starch films led to more smooth film, as observed by scanning electron images. Besides, the addition of various amounts of κ-carrageenan in the modified acetylated starch films caused the improvement of mechanical properties, moisture uptake, water vapor transmission rate …

Fabrication And Characterization Of Sb-Doped Mxene Prepared By Hydrothermal Method For Use As A Sensing Electrode For Heavy Metal Detection, Siranaree Phoohadsuan, Thitima Maturos Daniels, Mati Horprathum, Nichaphat Thongsai, Eakkasit Punrat

Journal of Metals, Materials and Minerals

MXene, a two-dimensional material with favorable physicochemical characteristics, has demonstrated outstanding efficiency in a wide range of applications because of their superior properties, such as higher surface area and conductivity, and facile surface modification. In this study, antimony (Sb) doped MXenes were synthesized via a simple hydrothermal method, employing various Sb concentrations ranging from 5%w/w to 25%w/w. The successful preparation of the Sb-doped MXene (Sb@MXene) was confirmed by an X-ray diffraction (XRD) method. Physical morphologies examined through field-emission scanning electron microscopy (FE-SEM) depict the presence of Sb nanoparticles with the size of about 80 nm on the surface and interlayer …

Realizing Fast Plating/Stripping Of High-Performance Zn Metal Anode With A Low Zn Loading, Zhuo Li, Tamene Tadesse Beyene, Kai Zhu, Dianxue Cao

Journal of Metals, Materials and Minerals

Zn metal batteries and capacitors (ZMBs/ZMCs) are gaining significant attention due to their low cost, high safety, and high theoretical capacity. However, the low utilization of Zn metal decreases the coulombic efficiency. Here, we present a novel approach to enhance the conductivity of host materials by utilizing a 3D conductive structural network of copper mesh. The 3D copper mesh serves as a high-conductive matrix and additionally coating it with Zn serves as a Zn source. Finally, a flexible reduced graphene oxide (rGO) was deposited on the Zn-coated copper mesh as an anode protective layer. The conductive copper mesh renders a …

A Review On The Development Of Metals-Doped Vanadium Oxides For Zinc-Ion Battery, Kittima Lolupima, Jin Cao, Dongdong Zhang, Chenwu Yang, Xinyu Zhang, Jiaqian Qin

Journal of Metals, Materials and Minerals

Rechargeable zinc-ion batteries (ZIBs) are emerging as promising energy storage devices for various applications, including large-scale energy storage, due to their environmental friendliness, enhanced safety, and low cost. A key challenge in ZIB development is creating cathode materials that reduce the solubility of active materials in aqueous electrolytes, increase electrical conductivity, and extend life cycles for high performance. Vanadium-based compounds, with their diverse structures and multiple oxidation states (+2, +3, +4, and +5), have been extensively studied as effective cathodes for ZIBs. This mini review highlights recent research on doping transition metals into vanadium oxide materials to achieve superior electrochemical …

Comparative Studies Of Radio Transparency And Dielectric Characteristics Of Polymer Composites, Azira Yermakhanova, Aidar Kenzhegulov, Berdiyar Baiserikov, Мohammed Meiirbekov, Nurlan Boguspayev

Journal of Metals, Materials and Minerals

Aramid-epoxy composites and glass fiber reinforced plastics are widely used in the manufacturing of the fairing design for modern aerospace vehicles due to their excellent mechanical properties combined with radio transparency in wave transfer. In this paper, aramid-epoxy composite and fiberglass were fabricated by the vacuum infusion method for a comparative study on radio transparency and dielectric characteristics. The radio transparency of the studied materials was evaluated by free-space measurements in the frequency range of 1 GHz to 8.5 GHz. According to the radio transparency results, the aramid-epoxy composite undergoes less electromagnetic wave loss than glass fiber reinforced plastic. Modifying …

Effect Of Hatch Spacing In Selective Laser Melting Process Of Ti-6al-4v Alloy On Finished Surface Roughness: A Computational Study, Reettiporn Thongpron, Patiparn Ninpetch, Prasert Chalermkarnnon, Pruet Kowitwarangkul

Journal of Metals, Materials and Minerals

The Selective Laser Melting (SLM) process is a promising additive manufacturing technology for producing complex metal parts. However, this process has certain limitations, including lack of fusion and defects, which can hinder its industrial applications. These challenges can be addressed by determining the appropriate overlap percentage parameters. This study used numerical simulation to explore the effect of overlap percentage on multi-track melting in the SLM process for Ti-6Al-4V. The simulation results categorize the multi-track melting morphologies into two distinct groups. The first group, (0% to 40% overlap), displays consistent surface roughness with an average Ra value of 7 µm. In …

The Effects Of The Crystallinity Index Of Cellulose On The Flexural Properties Of Hybrid-Cellulose Epoxy Composites, Nathawat Poopakdee, Warut Thammawichai

Journal of Metals, Materials and Minerals

This work investigated the effects of the crystallinity index (CI) of cellulose on the flexural properties of hybrid-cellulose epoxy composites. The CI was varied by combining cellulose microfibrils (CMF) and microcrystalline cellulose (MCC), extracted from coir and eucalyptus, respectively, in various mixing ratios. From the XRD analysis, it was shown that the CI values and the CMF/MCC content follow a parabolic-fitting pattern, reaching a maximum value of 82.06% for the CMF/MCC of 30/70. The composites with cellulose of different CI values were fabricated and the flexural properties were measured. The results showed that the flexural strength increased as the CI …

Maintenance Of The Deteriorated Infrastructure In Thailand, Pakawat Sancharoen, Sothyrak Rath, Dong Viet Phuong Tran, Pitichon Klomjit, Somnuk Tangtermsirikul

Journal of Metals, Materials and Minerals

Infrastructure has been aged and deteriorated by various causes. Maintenance of its safety and serviceability are crucial and many countries have raised concerns about the existing infrastructure. Infrastructure in Thailand has been also aged. This paper shows results of studies relating to maintenance of infrastructure in Thailand. Inspection of the existing infrastructure in Bangkok was conducted by both visual and non-destructive testing (NDT) showing many deteriorations, and damages. Most of the deteriorations are caused by low concrete covering depth and water leakage. While in marine environment, chloride attack is the main cause. Evaluation criteria for NDT results are studied and …

Use Of Commercial Synthetic Filament Waste To Reinforce Biobased Poly(Butylene Succinate) With The Aid Of Compatibilizers, Nattakarn Hongsriphan, Alongkorn Popanna

Journal of Metals, Materials and Minerals

Since poly(butylene succinate) (PBS) has low rigidity for engineering application, this research attempted to reinforce PBS with poly(ethylene terephthalate) (PET) and polyamide-6 (nylon6) filaments with the reservation of polymer toughness. Filaments were chopped to be short fibers (length of 2 mm to 4 mm) and melt compounded with PBS pellets in the weight ratio of 1 wt%, 5 wt%, and 7 wt% using a twin-screw extruder that the temperature profile was set high enough for melting only PBS matrix. Two types of compatibilizers; hexamethylene diisocyanate (HMDI) or hexamethylene diamine (HMDA) of 0.05 wt% were used to treat fiber surface. It …

Structural, Morphological, Magnetic, And Dielectric Properties Of Copper-Substituted Cuxzn(1-X)Fe2o4 Nanoparticles: Green Synthesis, Gavisiddaiah Harisha, Ramakrishnaiah Thejas, B. Venkatagiriyappa Padmini, Chinnappa Reddy Devaraja, Malalkere Veerappa Murugendrappa, Koppa Mahadevappa Rajashekara

Journal of Metals, Materials and Minerals

Structural, Magnetic, and Dielectric investigations on the “CuX Zn(1-X) Fe2O4” X with stoichiometry (X=0, 0.3, 0.5, 0.7, and 1) were synthesized by solution combustion method using Aloe Vera extraction.  The X-ray diffraction method was utilized to characterize the as-synthesized Cu-Zn ferrites. The results indicated the presence of cubic spinel structure with Fd‒3 m space group, and absence of other contaminates. The lattice parameter was found to increase with the increase in Zinc concentration. The patterns of TEM confirm that the particle is within the nanometer range (35 nm to 50 nm). Magnetic properties investigated by vibrating sample magnetometry, reveal that …

Vibration Absorption Of As-Built And Post-Heat-Treated Ti-6al-4v Alloy Fabricated By Laser Powder Bed Fusion Additive Manufacturing, Masaaki Nakai, Kohei Nagaya, Kosuke Ueki, Hideki Kyogoku

Journal of Metals, Materials and Minerals

Vibration absorption of the Ti-6Al-4V alloy fabricated by laser powder bed fusion additive manufacturing (LPBF-AM) was evaluated following as-built and post-heat treatment (i.e., solution treatment followed by water quenching). The base plate was heated at 50°C or 200°C during building. Results showed that the vibration absorption of the as-built Ti-6Al-4V alloy was higher when the base plate was heated at 50°C than at 200°C. Further, the vibration absorption indicated strong anisotropy, with the highest vibration absorption in the direction perpendicular to the building direction and transverse to the laser scanning direction. However, after solution treatment followed by water quenching, the …

Zno Nanostructures Synthesized By One-Step Sol-Gel Process Using Different Zinc Precursors, Maneerat Songpanit, Kanokthip Boonyarattanakalin, Wisanu Pecharapa, Wanichaya Mekprasart

Journal of Metals, Materials and Minerals

Zinc oxide (ZnO) nanopowders have been widely applied in electronics, optics and photocatalytic applications depending on their morphological structure. In the bottom-up process, it is conceived that the different zinc precursors may result in different formations of ZnO nanostructures with exceptional morphology. This work focuses on ZnO material synthesized via the facile sol-gel synthesis using different zinc slat precursors, including zinc acetate, zinc nitrate, zinc sulphate, and zinc chloride. All zinc salt precursors were incorporated with sodium hydroxide and hexamethylenetetramine (HMTA) under mild thermal energy with consistent conditions to investigate ZnO formation. The as-prepared samples appeared in white powders with …

Properties Of Acrylonitrile-Butadiene-Styrene Nanocomposites Adding Ammonia Plasma Treated Carbon Nanotubes/Graphene Nanoplatelets For Electronic Discharge Application, Sorawit Duangsripat, Pajaera Patanathabutr, Nattakarn Hongsriphan

Journal of Metals, Materials and Minerals

Carbon-based nanofillers have been applied in various products, especially electrical and electronic products. It could be used to modify electrical conductivity of the integrated circuit (IC) polymeric packaging in order to prevent electrostatic discharge that would damage electronic integrity. This research reported the influence of ammonia plasma functionalization and its concentration on electrical, mechanical and thermal properties of Acrylonitrile-Butadiene-Styrene (ABS) reinforced with a mixture of CNTs and GNPs. Nanocomposites were successfully compounded using a twin-screw extruder, which firstly the masterbatch was prepared and then mixed with neat polymer into various concentrations (2 wt%, 4 wt%, 6 wt%, and 8 wt%). …

Development Of Forming Limit Diagrams For Motorcycle Fuel Tank Made From Aa5754-O Under Deep Drawing, Phiraphong Larpprasoetkun, Jidapa Leelaseat, Aeksuwat Nakwattanaset, Surasak Suranuntchai

Journal of Metals, Materials and Minerals

The research studied forming limit curves (FLC) for aluminum alloy 5754-O (AA5754-O) and modified them using two methods. These methods aimed to create FLCs for application in describing the forming behavior of sheet metal material through a deep drawing process simulation in the PAM-STAMP program. The methods are as follows: The Nakajima test combined with a new method, a novel process for grid creation on the specimen: laser marking combined with elastic paints. A mathematical material model using the fracture model along with the yield criteria: YLD2000-2D and hardening law: Swift-Voce. The Keeler-Brazier modified equation was chosen as the fracture …

Investigating The Oxidation Behavior Of Mg-Zn Alloy: Effects Of Heating Rates, Gas Flow, Protective Atmosphere, And Alloy Composition, Tuğçe Nur Saraçoğlu, Safa Polat, Erkan Koç, Muwafaq Mashrah, Amir Najah Saud, Marta Michalska-Domańska

Journal of Metals, Materials and Minerals

Magnesium-zinc alloys offer promising lightweight properties but are prone to oxidation during high-temperature processing and usage. In this study, the oxidation behavior of Mg-Zn alloy was examined according to the inert gas type flow rate, heating rate and alloy amount. Initially, alloys were produced by adding zinc at weight percentages of 0.5%, 1.5%, and 2% using the casting method. The alloys were characterized using X-ray fluorescence (XRF), X-ray Diffraction (XRD), and scanning electron microscope (SEM) analyses, revealing the formation of dendritic Mg-Zn intermetallic within the alloy. The oxidation behavior of these alloys was examined via differential thermal analysis (DTA) and …

High-Performance No2 Gas Sensor Based On Reduced Graphene Oxide/Zro2 Hybrids, Ali Jabbar Fraih, N. Naeema, Fatima Fadhil Abbas

Journal of Metals, Materials and Minerals

The increasing concern over environmental pollution, particularly from nitrogen dioxide (NO2) emissions, necessitates the development of efficient NO2 detection sensors. This study introduces reduced graphene oxide (rGO)/ZrO2 hybrids for enhanced NO2 gas sensing. Utilizing a modified Hummer’s method, graphene oxide (GO) flakes were synthesized and subsequently sputtered with 10 nm ZrO2 film, followed by thermal annealing to produce rGO/ZrO2 hybrids. The hybrids were characterized using various techniques including SEM, TEM, AFM, Raman spectroscopy, and XRD, confirming successful synthesis and reduction of GO, as well as the formation of ZrO2 nanoparticles. Gas sensing tests revealed superior sensitivity to NO2 in the …

Adhesive Wear Characteristics Of Mono And Hybrid Cf/Ep Composite With Nano-Hap Filler, Divya Gurkar Somashekar, Naveena Bettahalli Eswaregowda, Suresha Bheemappa

Journal of Metals, Materials and Minerals

Composites materials with more than two reinforcing materials are called hybrid composites.  Tailoring the composites by hybridizing fillers, fibers and matrix will yield better properties compared to mono-composites. Hence, an effort has been made in the current research work to develop carbon fiber epoxy hybrid nanocomposites, comprising different weight percentage of Hydroxyapatite (HAP) to evaluate the potential effects on tribological properties using two body sliding wear method. Taguchi technique (L27 array) has been adopted to investigate the impact of parameters such as filler inclusion (0%, 1.5%, and 3%), load (30, 45, and 60 N), sliding velocity (1, 2, and 3 …

Effects Of Oleylamine Concentration On The Synthesis Of Formamidinium Lead Halide Perovskite Nanocrystals And Physical-Optical Properties, Kunlasatree Kunsaeng, Yingyot Infahsaeng

Journal of Metals, Materials and Minerals

Perovskite nanocrystals (PNCs) has been extensively interested owing to their distinctive properties for applications in optoelectronics and energy harvesting. The properties of these nanocrystals, including optical and energy characteristics, can be tuned by adjusting the particle size using different synthesis techniques. Among these, the ligand-assisted reprecipitation (LARP) method has become popular for its simplicity and scalability. Nevertheless, it is vital to understand that the growth of PNCs is extremely sensitive to the conditions of synthesis, highlighting the importance of recognizing the factors that limit the formation and properties of PNCs. In this study, PNCs based on formamidinium lead bromide (FAPbBr3) …

Synthesis And Visible Light Photocatalytic Activity Of Silver Zinc Phosphates, Rina Kanemoto, Hiroaki Onoda

Journal of Metals, Materials and Minerals

Currently, photocatalytic materials in common use mainly use ultraviolet light, but the amount of ultraviolet light contained in sunlight is limited and their energy efficiency is known to be low. Therefore, there is a need for a compound that shows photocatalytic activity in visible light, and silver phosphate matches this requirement, but it is relatively expensive. In this study, photocatalytic materials that could use visible light and were relatively inexpensive were attempted to be prepared. Specifically, samples were prepared by changing the silver/zinc molar ratio (Ag/Zn = 100/0, 90/10, 80/20, 70/30, 60/40), and each sample was evaluated and examined from …

Fabrication And Characterization Of Zinc Anode On Nickel Conductive Cloth For High-Performance Zinc Ion Battery Applications, Tanapoom Mawintorn, Kittima Lolupiman, Napat Kiatwisarnkij, Pattaraporn Woottapanit, Manickavasakam Karnan, Suwimon Saneewong Na Ayuttay, Xinyu Zhang, Panyawat Wangyao, Jiaqian Qin

Journal of Metals, Materials and Minerals

The development of advanced materials for energy storage is critical to addressing global energy challenges. Zinc-ion batteries offer a promising solution due to their safety, cost-effectiveness, and environmental friendliness. In this study, we enhanced the conductivity of cotton by coating it with electroless nickel, followed by zinc electroplating, to create a flexible material suitable for zinc-ion battery applications. Cotton was coated with electroless nickel at temperatures ranging from 40°C to 60°C for 1 min to 13 min. Subsequently, zinc electroplating was performed with current densities of 0.02 A·cm‒2 for 60 min, 0.03 A·cm‒2 for 40 min, and 0.04 A·cm‒2 for …

Phase Separation Promotes Fcc-Phase Mechanical Twinning In Alcocrfemo0.05ni2 High Entropy Alloy, Zifeng Zhang, Liang Chu, Jiqing Zhao, Bing Xu, Qilu Ye

Journal of Metals, Materials and Minerals

The AlCoCrFeMo0.05Ni2 high entropy alloy (HEA) can remarkably enhance its ductility through high-temperature annealing. Nevertheless, the underlying mechanism remains under explored. Herein, we utilized molecular dynamics simulations (MD) to calculate the generalized stacking fault energy (GSFE) curves and uniaxial tensile behavior. Notably, the twin inclination of the FCC phase increases significantly after annealing. During plastic deformation, the FCC phase in the annealed alloy exhibits a substantially higher formation of twinning and stacking faults compared to the as-cast alloy. This increased twin inclination after annealing is the fundamental mechanism contributing to the enhancement of high-temperature ductility.

Recent Advances In Synthesis And Bio-Applications Of Natural Stabilizers For Metal Nanoparticles, Abhishek Sharma, Navneet Kaur, Ayashkanta Nanda, Manvinder Kaur, Rajeev Sharma, Harvinder Singh Sohal

Journal of Metals, Materials and Minerals

Due to their exceptional physicochemical properties, the synthesis and application of metal nano-particles gained significant traction and a grip in industries and scientific fields or regions. However, the thermodynamic instability of metal nanoparticles poses or leads to challenges in their controlled synthesis and stabilization. To address this stability and the immobilization strategies, natural polymers such as cellulose, starch, alginate, chitosan, and hyaluronic acid have been explored for their non-toxic, biodegradable, and environmentally friendly characteristics. Recent advances in nanotechnology have led to an increased focus on these natural polymer’s utilization as effective stabilizers for diverse metal nanoparticles. This review comprehensively examines …

Influence Of Bi Substitution On Structural And Optical Properties Of Lafeo3 Perovskite, Mohammed Sadok Mahboub, Ouarda Ben Ali, Soria Zeroual, Ghani Rihia, Mourad Mimouni, Imad Hamadneh, Samir Bayou, Hani Boulahbel, Adel Benarfa, Ferhat Rehouma

Journal of Metals, Materials and Minerals

The sol-gel self-ignition method has successfully synthesized a series of homogenous perovskites La1-xBixFeO3 (x=0.0, 0.2, 0.4, 0.6, and 0.8) nanoparticles. Rietveld refinement results from XRD patterns revealed no secondary phases in pure and Bi-substituted LaFeO3 samples. The structural transition from orthorhombic at x = 0.0 until x=0.6 (space group Pbnm) to rhombohedral at x=0.8 (space group R3c) was observed. Lattice parameter values increase slightly with Bi concentration due to the substitution of Bi in the LaFeO3 structure. The average crystallite size D was found to vary between 19 nm and 50 nm. The combination of XRD and SEM demonstrated that …

Nanostructure Of Tio2 And Wo3 Multilayer Films Deposited On Ito Glass For Electrochromic Enhanced Photocatalytic Activity, Atsakorn Chuenkruit, Watcharaporn Thongjoon, Kamon Aiempanakit, Montri Aiempanakit, Chantana Aiempanakit

Journal of Metals, Materials and Minerals

The photocatalytic activity (PA) by electrochromic (EC) enhancement of single and multilayer films of TiO2, WO3, TiO2/WO3, and WO3/TiO2 was investigated. All films were deposited from metal on an ITO glass substrate using direct current (DC) magnetron sputtering via an oblique angle deposition (OAD) technique at 85°. Subsequently, a thermal oxidation (TO) process at 500℃ was applied for the samples to form metal oxide films. The morphology, elemental composition, crystal structure, and optical properties were studied by using field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffractometry (XRD), and UV-vis spectroscopy, respectively. The photocatalytic properties were investigated …

Surface Characteristics Evolution Of 316l Stainless Steel Induced By Tension Loading, Kanokwan Antanam, Surasak Kuimalee, Panya Buahombura, Waraporn Piyawit

Journal of Metals, Materials and Minerals

316L stainless steel has been employed as a medical implant material owing to its advantageous biocompatibility and durability. The microstructure and surface characteristics of 316L play a crucial role in implant application. Diverse processing methods were utilized to modify the surface properties of 316L to customize the characteristics of medical devices. Mechanical deformation induces changes in the microstructure and causes changes in surface topography. In this study, we introduced deformation to 316L by applying uniaxial tension at strain values ranging from 2% to 25%. During sample preparation, electrochemical polishing was employed to eliminate the deformed layers generated by mechanical grinding. …

Tin, Silver, And Copper Sulfate Compound Extraction From Lead-Free Solder Dross By Reduction With Petroleum Coke, Electrorefining, Cementation, And Crystallization Process, Sakhob Khumkoa, Natthicha Ma-Ud, Tapany Patcharawit, Tanongsak Yingnakorn

Journal of Metals, Materials and Minerals

Solder dross, a waste by-product from the electronic component dipping bath, contains significant quantities of valuable metals. This study presents a four-step process for recovering tin, silver, and copper from lead-free Sn-Ag-Cu solder dross. The process involves the initial reduction of the dross using petroleum coke to produce an anode plate, followed by electrorefining to extract tin from the anode plate. Selective leaching of silver and copper from the residual anode slime and cementation techniques are employed to recover silver powder. The rest of the copper solution was used to synthesize copper sulfate crystals. Experimental results demonstrate optimal conditions for …

Sbr Elastomer Response To Renewable Diesel Blends: An Experimental Investigation, Andrias Rahman Wimada, Ni Putu Dian Nitamiwati, Fatimah Tresna Pratiwi, Maharanni Dewi Solikhah, Bina Restituta Barus, Eki Dwi Wijanarko, Riesta Anggarani, Lies Asiyah, Setyo Widodo, Arfi Thahar, Soni Solistia Wirawan

Journal of Metals, Materials and Minerals

To investigate the impact of Styrene Butadiene Rubber (SBR) exposure to renewable fuels during handling and storage processes, compatibility tests were conducted on three different renewable fuel mixtures: 30% biodiesel, 40% biodiesel, and 30% biodiesel + 10% hydrogenated vegetable oil. These tests involved static immersion experiments conducted at room temperature for a duration of 1000 h, following the ASTM D471 standards. Before and after the immersion tests, the physical properties and visually assessed elastomers concentrations were investigated by varying the SBR content. Additionally, the post-immersion fuel properties were examined. The results showed that mass and volume swelling increased with the …

Optimization Of Ultrasound-Assisted Anthocyanin Extraction From Agricultural Waste Purple Corn Silk For Multifunctional Hemp Finishes, Benjamas Klaykruayat, Nattaya Vuthiganond, Pisutsaran Chitichotpanya

Journal of Metals, Materials and Minerals

The utilization of agricultural wastes for textile dyeing has gained popularity due to their safe and environmentally friendly properties, as well as the resource sustainability. Natural dye extraction is usually achieved through solvent extraction, which is time-consuming, requires a lot of solvent, and degrades desired compounds at high temperatures. Thus, this study investigated ultrasound-assisted anthocyanin extraction from agricultural waste purple corn silk as natural functional colorants for hemp finishes, given the numerous health benefits associated with anthocyanin. In order to optimize the extraction processes and evaluate the synergistic impact of these conditions, response surface methodology was implemented. The optimum conditions …

Bifunctional Cationic Modification Of Modal Fabric For Sustainable In Textile Dyeing With Spent Coffee Grounds, Monthon Nakpathom, Rattanaphol Mongkholrattanasit, Sarute Ummartyotin, Pisutsaran Chitichotpanya, Nattaya Vuthiganond

Journal of Metals, Materials and Minerals

In order to dye cellulose or regenerated cellulose with natural dyes, toxic metal mordants are generally employed. In response to this issue, the novel bifunctional cationic agent was pretreated to modify modal (regenerated cellulose) fabric prior to dyeing to enhance the fiber-dye affinity. The cationization reaction was carried out using a compound containing bicationic sites, N,N'-(oxybis (ethane-2,1-diyl))bis(3-chloro-2-hydroxy-N,N-dimethylpropan-1-aminium. This unique cationic agent is capable of producing nonvolatile amine and has no odor problem. The successful cationic modification was confirmed through FTIR spectroscopy and zeta potential measurement. The cationized process was optimized at a cationic and sodium hydroxide concentration …