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INDONESIA
Jurnal Sains Materi Indonesia
Published by BRIN Publishing
ISSN : 14111098     EISSN : 2614087X     DOI : https://doi.org/10.55981/jsmi
Core Subject : Science, Engineering,
Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology
Jurnal Sains Materi Indonesia (Indonesian Journal of Materials Science, JUSAMI) is an international peer-reviewed journal that publishes significant and important research from all areas of materials science and engineering. The topics discussed in JUSAMI are research & development results in materials science and engineering, technological innovations and applications in industry based on materials such as polymers, ceramics, composites, metals, noble metals, metal alloys, oxides, or carbon, which are related to mechanical, magnetic, physical, optical, dielectric or electronic properties (superconductivity, semiconductivity, superionic conductivity, etc.) with discussion including synthesis, modification and development of methods; testing and characterization; simulation and modeling; nuclear engineering and its applications in materials science, etc.
Arjuna Subject : Ilmu Material (semua kategori) - Ilmu Material (Lain-Lain)
Articles 10 Documents
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Search results for , issue "Vol. 26 No. 2 (2025): Jurnal Sains dan Materi Indonesia" : 10 Documents clear
Simple Synthesis of 4A Zeolite with the Addition of Al2O3 and Na2EDTA Compounds Dawolo, Januari; Telaumbanua, Putra Hidayat; O. Laia; N. K. Lase
Jurnal Sains Materi Indonesia Vol. 26 No. 2 (2025): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2025.4302

Abstract

4A zeolite complex derived from coal has been successfully synthesized through the preparation of fractionated samples, analyzed using atomic absorption spectrophotometry (AAS), resulting in a chemical composition of silica (SiO2) 24.78% and aluminum oxide (Al2O3) 29.60%. The fly ash produced from this fractionation is used as the base material for the synthesis of 4A zeolite. The fly ash is reacted with sodium hydroxide (NaOH) at room temperature, yielding a gel that is subsequently crystallized into 4A zeolite through a reflux process. The resulting zeolite crystals are then supplemented with Al2O3 and disodium dihydrogen ethylenediaminetetraacetate (Na2EDTA) as sources of aluminum to achieve a molar ratio of Si/Al = 1.42. Optimal quality 4A zeolite crystals were obtained from the synthesis of 5.9351 g of medium fraction fly ash, along with 1 g Al2O3, 4 g NaOH, and 0.569 g Na2EDTA. Infrared (IR) characterization results indicate that the optimal 4A zeolite from medium fraction fly ash is characterized by crystals with the addition of 1.5 g of Al2O3. Wide absorption bandwidths are typically caused by large spectral line widths, which can occur if a significant amount of energy is absorbed by various vibrational modes, assuming that excess Al2O3 leads to the formation of functional groups that contribute to the same band. A peak at a wavelength of 564 cm-1 indicates double ring stretching vibrations, while a peak at 661 cm-1 indicates symmetric stretching vibrations of the zeolite framework. Meanwhile, peaks at wavelengths of 3460.86 cm-1 and 974.71 cm-1 indicate detected O-H absorption
Powder Coating Waste Utilization as a Filler in High-Density Polyethylene (HDPE) Coupled with PP-g-MA Shinta Dewi Ariantika; Mochamad Chalid; Azizah Intan Pangesty
Jurnal Sains Materi Indonesia Vol. 26 No. 2 (2025): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2025.4963

Abstract

The powder coating process in industry typically generates waste during curing process. This non-recyclable and hazardous powder-coating waste is utilized as filler material in this research. Polyester was employed as filler in the High-Density Polyethylene (HDPE) Matrix Composite. The study investigated the impact of polyester composition at 20%, 30%, and 40%, with 5% of PP-g-MA coupling agent addition. To assess the effect as a coupling agent, 0%, 2%, 5%, and 10% of PP-g-MA were added to the composite with a matrix-filler ratio of 70:30. Mixing was conducted using the hot melt mixing method at 180°C and mixing speed 60 rpm, with duration 9 minutes. The characterization and tests include the measurements of surface tension using SEM, FTIR, TGA, DSC, and micro-tensile tests. The results indicate that polyester and PP-g-MA composition decrease the thermal properties of the composite. However, increasing the filler addition by up to 30% and PP-g-MA addition by up to 5% enhances the thermal properties. The tensile strength and stiffness of the composite with polyester filler and PP-g-MA are higher than pure HDPE. These are achieved with the addition of polyester filler 20% and a coupling agent composition of PP-g-MA at 5%.
The Effect of Ionic Liquid and Lithium Salt Electrolyte Addition on The Characteristics of Polyvinyl Alcohol/Chitosan-Based Membranes Handika, Rudi Satya; Ratri, Christin Rina; Rohib, Rohib; Nugraha, Adam Febriyanto
Jurnal Sains Materi Indonesia Vol. 26 No. 2 (2025): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2025.5011

Abstract

The development of an environmentally friendly polymer electrolyte membrane for lithium-ion batteries is essential. A composite membrane composed of chitosan and polyvinyl alcohol (PVA) is one of the eco-friendly polymer membrane types used for lithium-ion battery electrolyte. This study examined the effect of ionic liquid 1-hexyl-3-methylimidazolium iodide (HMII) and lithium bis(oxalate) borate (LiBOB) electrolyte addition on the characteristics of composite membranes made of chitosan and PVA. The results reveal that the addition of LiBOB and HMII was able to promote the agglomerations and the formation of microcrystals, which increased the mechanical properties and ionic conductivities of the membranes. The membrane sample with LiBOB composition of 25% produced the highest mechanical properties with tensile strength of 21.11 MPa and elastic modulus of 1.93 MPa. The membrane sample with LiBOB composition of 10% without the addition of HMII produced the highest ionic conductivity, namely 5.17 x 10-6 S/cm.
Formulation and Characteristics of Sunscreen Cream based on Isolated Lignin from Oil Palm Empty Fruit Bunch (OPEFB) : Formulation and Characteristics of Sunscreen Cream Restu, Witta Kartika; Rusumayanti, Felli; Septiyanti, Melati; Muryanto; Aryana, Nurhani; Mawarni, Rista Siti; Meliana, Yenny; Sondari, Dewi; Fatriasari, Widya; Ogino, Chiaki
Jurnal Sains Materi Indonesia Vol. 26 No. 2 (2025): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2025.6199

Abstract

Lignin was recovered from black liquor during the biorefinery process and has prospective applications in pharmaceutical, cosmetic, and health care. Lignin, which has substantially smaller particles, was used as the active ingredient in the sunscreen cream formulation. The isolated lignin was examined for physicochemical parameters such as yield, purity, particle size, total phenol, and morphology. The obtained lignin was used in the preparation of sunscreen cream. The isolated lignin concentration in the cream varied between 0.1, 1, and 2 wt%. The sun protection factor (SPF) of the designed sunscreen creams was assessed, and antioxidant activity and stability were studied, which included pH, particle size, and appearance during the observation period. The formulated cream has an SPF of approximately 15, which is sufficient to protect human skin from the sun's UV radiation. Furthermore, the most significant antioxidant activity was found to be 68.94%. As a result, the developed sunscreen cream has the potential for further research because it is composed of natural active ingredients that are safe for humans and the environment.
Thermal Evaporation of Graphene on Silicon: A Molecular Dynamics Simulation pamungkas, mauludi ariesto; A. B. Gien; F. S. Farista; D. J. D. H. Santjojo
Jurnal Sains Materi Indonesia Vol. 26 No. 2 (2025): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2025.7953

Abstract

Silicon, a ubiquitous element in modern electronics, underpins the operation of countless devices due to its unique semiconducting properties. However, as device dimensions shrink to the nanoscale, silicon-based devices face limitations such as increased power consumption and decreased performance. Coating silicon with graphene is aimed to improve the device performance and extend the limits of silicon’s performance. Conducting experimental work involving graphene for thin coatings is a resource-intensive process. Hence, molecular dynamics (MD) simulation is necessary to illuminate the evaporation and coating mechanisms at the atomic scale, serving as a valuable tool for experimental design. These molecular dynamics simulations have elucidated the intricate relationship between temperature and deposition time in governing the quantity and spatial distribution of carbon atoms on a silicon substrate. Within a 300 ps deposition interval, a non-linear correlation between temperature and carbon deposition is observed, indicating that the allotted time is insufficient for complete atomic diffusion and homogeneous distribution. At elevated temperatures, carbon atoms accumulate, impeding the diffusion of subsequent atoms. Conversely, a 600 ps deposition period reveals a direct proportionality between temperature and carbon deposition, attributed to the enhanced mobility of carbon atoms, facilitating their dispersion and creation of vacancies within the substrate.
Copper Dissolution Rate of Modified Self-Polishing Antifouling Paint with Cerium Oxide Nikitasari, Arini; Irawan, Januar; Priyotomo, Gadang; J.W. Soedarsono; Riastuti, Rini
Jurnal Sains Materi Indonesia Vol. 26 No. 2 (2025): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2025.8753

Abstract

The main objective of the work is to substitute SeaNine 211 in self-polishing antifouling (SPA) paint formulations for marine coating using cerium oxide as a co-biocide. The development of SPA paint with cerium oxide as a co-biocide is expected to significantly improve the environmental friendliness and efficacy of antifouling paints. The preparation of modified SPA paint was undertaken by incorporating the cerium oxide with various concentrations (0.1, 0.3, and 0.5 wt.%) in the SPA paint formulation without SeaNine 211. The copper dissolution rate determines the efficacy of antifouling paint, where the greater the copper release rate, the greater the efficacy of the antifouling paint. The leached-out test results obtained suggest that with an increase of 0.1% wt in the concentration of cerium oxide, there was an improvement in the copper dissolution rate. It was also observed that the mild steel specimens were coated with modified SPA paint when immersed in the seawater for 7 days for testing. The properties were observed by utilizing scanning electron microscopy (SEM). An improvement in the copper dissolution rate was found, as shown by cerium oxide SPA paint when contrasted with bare paint. The contact angle test finding also suggests that adding 0.1% wt of cerium oxide to the SPA paint will increase the dissolution rate of copper. This work could provide insight into developing an environmentally friendly antifouling paint co-biocide.
Surface Modification of Hematite using Stearic Acid as Hydrophobic Inorganic Pigment Materials Iqbal, Rendy Muhamad; Agnestisia, Retno; Damsyik, Akhmad; Sinaga, Tiara Cristy Agatha; Khaerudini, Deni Shidqi; Wulandari, Ika Octavia; Susanti, Indri; Putra, Riandy; F. Adany
Jurnal Sains Materi Indonesia Vol. 26 No. 2 (2025): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2025.8982

Abstract

The inorganic pigment is a material that determines the color of a paint that can be used as a coating material. Until now, the basic material for red pigment, namely hematite, has been imported to meet domestic needs. This study aims to develop a hematite-based inorganic pigment material from the mill-scale waste of PT Krakatau Steel by modifying the surface to be hydrophobic, making the pigmenting material resistant to acid attack and preventing peeling and corrosion of the material. The surface modification of hematite is carried out by reacting it with stearic acid into ethanol as a solvent. Hematite was immersed in a stearic acid solution with various concentrations of 2, 4, 6, and 8% for 6 hours; it was then separated by filtration and followed by the drying process. The hematite-stearic was characterized by X-ray diffraction (XRD), Fourier-transform infrared (FTIR), scanning electron microscope (SEM), and water contact angle (WCA). The results show that the grafting process successfully changed the properties of hematite to hydrophobic. It is also supported by the FTIR spectrum due to the presence of molecular vibration of C-H, C=O, C-O, and Fe-O. Then, the higher contact angle is 150.474° for the stearic acid concentration of 6%.
Double Emulsion Based Alginate/Chitosan Prepared by Ultrasound for Bioactive Encapsulation Prasetyaningrum, Aji; Ashianti, Aulia Dwi; Rokhati, Nur; Setyaningsih, Yuliani
Jurnal Sains Materi Indonesia Vol. 26 No. 2 (2025): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2025.9018

Abstract

Water-in-oil-in-water (W/O/W) emulsion is an effective technology for encapsulating bioactivity but has poor stability. This study aims to evaluate the effect of ultrasonication on the preparation of double emulsions with varying alginate/chitosan ratios (1:1, 1:2, 2:1) and sonication times between 0 and 7 minutes. The results showed that a sonication time of 7 minutes resulted in the best storage stability (0.00–1.02%) and thermal stability (17.13–23.21%), a significant decrease in droplet size (2.08–2.87 μm), and higher emulsion activity index (EAI) (16.11–38.10 m2/g) and emulsion stability index (ESI) (63.28–89.74 min) values. The alginate/chitosan ratio of 2:1 also gave the most optimal results with storage stability of 4.58%, thermal stability of 36.23%, droplet size of 2.08–4.14 μm, and EAI and ESI values of 16.12 m2/g and 48.42 min. The ultrasonic-assisted alginate/chitosan double emulsion method effectively improved the stability and bioavailability of bioactive and presents significant potential for food and pharmaceutical applications.
Color and Total Organic Carbon (TOC) Removal from Peat Water Using The Electrocoagulation Process: Central Composite Design for Optimization Mirwan, Agus; Dessy, Sheilvina Milliviyanthi; Wicakso, Doni Rahmat; Suherman, Bella Febrianty Putri; Nurhalisa, Siti
Jurnal Sains Materi Indonesia Vol. 26 No. 2 (2025): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2025.9027

Abstract

The electrocoagulation process is simple and environmentally friendly. It removes pollutants in peat water such as color and total organic carbon (TOC). In this study, the electrocoagulation process was designed, optimized, and investigated using central composite design (CCD) type response surface methodology (RSM). The effects of current density and reaction time in the range of 6–14 mA/cm2 and 30–90 minutes on the efficiency of color and TOC treatment were evaluated. The best results for removing output efficiency were 10 mA/cm2 for 30 minutes (98.1% color) and 10 mA/cm2 for 30 minutes (91% TOC). By comparing actual and predicted data, the optimum condition in this process occurs when the current density is 6.140 mA/cm2 and the reaction time is 76.042 minutes. The experimental data can be well described using the central composite design
Preface Volume 26 (2) Year 2025 Rahman, Andri
Jurnal Sains Materi Indonesia Vol. 26 No. 2 (2025): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

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