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INDONESIA
Jurnal Sains Materi Indonesia
Published by Badan Tenaga Nuklir Nasional
ISSN : -     EISSN : -     DOI : -
Core Subject : Science,
Materials Science & Nanotechnology
Jurnal Sains Materi Indonesia (Indonesian Journal of Materials Science), diterbitkan oleh Pusat Teknologi Bahan Industri Nuklir - BATAN. Terbit pertama kali: Oktober 1999, frekuensi terbit: empat bulanan.
Arjuna Subject : -
Articles 865 Documents
 79   80   81   82   83 
THE EFFECT OF MILLING TIME AND PERCENTAGE OF DISPERSING AGENT ON THE CHARACTERISTIC OF SOLVENT-BASED BLACK PAINT FROM CARBON BLACK PIGMENT Ratnawati Ratnawati; Joko Noveriarto; Aniek S Handayani; Is S Purwaningsih; Iyus Hendrawan
Jurnal Sains Materi Indonesia Vol 21, No 4: JULY 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.21.4.5984

Abstract

THE EFFECT OF MILLING TIME AND PERCENTAGE OF DISPERSING AGENT ON THE CHARACTERISTIC OF SOLVENT-BASED BLACK PAINT FROM CARBON BLACK PIGMEN. The need for black paint made from carbon black pigment increasing year by year especially in the automotive world. The production of black paint is performed by milling the resin, pigment, additive/dispersing agent, and solvent. In the manufacturing process, it takes a relatively long time with precise dispersing agent composition toward pigment to get the product with blackness/solid black according to the expected quality. This work aims to study the role of the milling time of carbon black fw 200 beads on a 3 liter ball mill and the percentage of dispersing agents on paint color quality, especially blackness. The variations in milling time were 36, 48, and 60 hours and the weight percentage of dispersing agent toward pigment were 80%, 100%, and 120%. The optimum results obtained are at the milling time of 48 hours and on the percentage of dispersing agent of 120% with the product characteristics fulfills the requirement namely: 10 μm of particle fineness, 111.5 krebs unit of viscosity, 36.97% of solid content, 0.9839 gr/cc of specific gravity with desirable solid black color.
PERFORMANCE STUDY OF LiBOB/LiTFSI ELECTROLYTE SALT IN THE ALL-SOLID-STATE LITHIUM-ION BATTERY Christin Ratri; Titik Lestariningsih; Qolby Sabrina
Jurnal Sains Materi Indonesia Vol 21, No 3: APRIL 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.21.3.5895

Abstract

PERFORMANCE STUDY OF LiBOB/LiTFSI ELECTROLYTE SALT IN THE ALL-SOLIDSTATE LITHIUM-ION BATTERY. Solid polymer electrolyte is developed mainly to provide safer lithiumion battery upon high temperature operation. In this research, we employ LiBOB and LiTFSI electrolyte salt in various concentration to replace commercially used LiPF6 salt. Solution cast method was performed to produce polymer electrolyte membrane. PVdF-HFP was chosen as polymer matrix due to high dielectric constant, and compatibility to wide array of electrode materials as well as electrolyte salts. Higher amount of electrolyte salts contributes to thicker membrane and hence higher current output of the lithium-ion battery half-cells. SEM, FT-IR spectroscopy, and cyclic voltammetry measurement was conducted to evaluate li-ion battery cell performance. Between the two electrolyte salts used in this experiment, LiTFSI salt exhibited better performance compared to LiBOB.
STUDI KETAHANAN KOROSI BAJA TAHAN KARAT AUSTENITIK UNTUK MATERIAL ORTOPEDI Aan Sulistyawan; Mochamad Ichwan; Djoko H P
Jurnal Sains Materi Indonesia Vol 4, No 2: FEBRUARI 2003
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2003.4.2.4884

Abstract

STUDI KETAHANAN KOROSI BAJA TAHAN KARAT AUSTENITIK UNTUK MATERIAL ORTOPEDI. Dalam upaya mencari bahan alternatif untuk material implant dalam bedah ortopedi, telah dilakukan penelitian ketahanan korosi pada tiga varian baja tahan karat austenitik non standar Al-6X (Alleghenyludlum) dengan kandungan Mo masing-masing: 4%, 5%, dan 6%. Pengujian dilakukan dengan metode CMS (Corrosion Measurement System) dalam media larutan garam NaCl. Logam contoh uji terlebih dahulu dipanaskan didalam tungku pada suhu 1150 0C agar terjadi proses pelarutan unsur-unsur (Solution Treatment), selanjutnya dicelup cepat (Quenching) dalam air pada suhu kamar. Sebagai pembanding digunakan baja standar AISI 316Lyang sudah banyak digunakan dipasaran sebagai implant dalam bedah ortopedi. Hasil pengujian pada suhu kamar menunjukkan bahwa laju korosi ketiga varian baja Al-6X masih lebih tinggi dari pada baja AISI 316L. Ketahanan korosi baja Al-6X paling tinggi dicapai pada varian baja dengan kandungan 4% Mo.
EFFECT OF 5 WT.% WPCB POWDER AS REDUCTANT ON INDONESIAN NICKELIFEROUS ORE PROCESSING Reza Miftahul Ulum; Dimas Ananda Radhitya; Alfian Ferdiansyah Madsuha; Faizinal Abidin
Jurnal Sains Materi Indonesia Vol 22, No 1: OCTOBER 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.22.1.6052

Abstract

EFFECT OF 5 WT.% WPCB POWDER AS REDUCTANT ON INDONESIAN LIMONITICNICKEL ORE PROCESSING. Waste printed circuit boards (WPCB) are among the most valuable parts of electronic waste with one of the fastest-growing waste streams in the world. The purpose of this study is to investigate the possibility of WPCB powder as an alternative reducing agent for the carbothermic process in nickel lateritic ore processing. WPCB waste was mixed with nickel ore at 1100ÚC in inert atmosphere. In addition, a conventional reductant of coal is also utilized for comparison. Both reductant are varied in concentration of 5 wt% and 15 wt%. Based on thermogravimetric analysis (TGA) and differential thermogravimetric analysis (DTA) investigation, it is observed that there exists a difference between WPCB powder, nickeliferous ore powder, and the mixture in their decomposed levels. The decomposed gasses of WPCB produced by thermal degradation in the TGA instrument are mainly composed of reduction gas, which plays a critical role in reducing the nickeliferous ore. This study shows that WPCB powder performs comparably to sub-bituminous coal in the pyrometallurgical processing of nickel ore, which is proved by X-Ray Diffraction (XRD) test results that the carbothermic products consists of FeNi, magnetite, wustite and fayalite. It can be concluded than WPCB powder has potential to be utilize as an alternative reductant.
PREFACE JUSAMI Vol. 21, No. 1, October 2019 JUSAMI JUSAMI
Jurnal Sains Materi Indonesia Vol 21, No 1: OCTOBER 2019
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2019.21.1.6154

Abstract

EFFECT OF CRYSTALLINITY TO OVERPOTENTIAL ON Ni₃Fe ALLOY AS ELECTROCATALYST IN HYDROGEN EVOLUTION REACTION Qonita Mu'minah; Achmad Rochliadi; Aep Patah
Jurnal Sains Materi Indonesia Vol 21, No 3: APRIL 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.21.3.5963

Abstract

EFFECT OF CRYSTALLINITY TO OVERPOTENTIAL ON Ni3Fe ALLOY AS ELECTROCATALYST IN HYDROGEN EVOLUTION REACTION. Ni-Fe alloys can be used as electrocatalyst for the hydrogen evolution reaction (HER) in an alkaline solution. HER consumed highly energy and overpotential driven. The overpotential value corresponding to the electron transfer in reaction can be affected either by metal combination or alloy as a cathode. Ni₃Fe  alloy had been successfully synthesized by the electrodeposition method using direct-current (DC) on a 304 L type stainless steel substrate. The modified Watts bath deposition was used NiCl2·6H2O and FeCl3·6H2O as precursors of the alloy. The optimum conditions of the reaction were obtained at pH of the solution is 2.20±0.02 with 25 mA/cm² current density at 55 °C for 160 minutes. Ni₃Fe alloy was characterized by Powder X-ray Diffraction (PXRD), Energy-Dispersive X-ray Spectroscopy (EDX), and Scanning Electron Microscopy (SEM). The electrocatalytic property of Ni3Fe alloy was electrochemically measured in 1 M KOH solution by polarization method using a Tafel plot with a scanning rate of 1 mV/s. As a result, the mass ratio of Ni²+ /Fe³+ in bath deposition influenced the electrocatalytic property of Ni₃Fe alloy. Ni₃Fe alloy with a higher crystallinity lowered the overpotential value of HER up to 67% compared to Ni metal.
PROSES PRODUKSI KOMPOSIT MAGNET DENGAN TEKNIK INJECTION MOULDING Hany Julaiha; Sudirman Sudirman; Ridwan Ridwan; Mujamilah Mujamilah
Jurnal Sains Materi Indonesia Vol 4, No 2: FEBRUARI 2003
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2003.4.2.4880

Abstract

PROSES PRODUKSI KOMPOSIT MAGNET DENGAN TEKNIK INJECTION MOULDING. Teknik cetak injeksi untuk komposit magnet merupakan gambaran tentang kesulitan-kesulitan yang dialami selama proses pembuatan. Penelitian mengenai komposit magnet heksaferit dengan bahan baku polimer termoplastik (PP2) dengan serbuk magnet (SrM) yang menghasilkan sifat-sifat bahan yang diinginkan yaitu ringan, elastis, dan harganya murah merupakan suatu inovasi untuk membuat pilot plant ini. Proses produksi ini dirancang dengan menggunakan proses dan peralatan yang sederhana secara teknologi untuk mendapatkan produk yang optimal, serta bahan sisa pencetakan dan steam dapat didaur ulang. Total investasi untuk proses produksi ini diperkirakan sebesar Rp.1,3 Milyar dengan keuntungan bersih per tahunnya sekitar Rp. 241 Juta. Nilai ROI yang diperoleh 72 %, POT selama 2 tahun dan BEP 25 %.
COVER JUSAMI VOL.21, NO.4, JULY 2020 JUSAMI JUSAMI
Jurnal Sains Materi Indonesia Vol 21, No 4: JULY 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.21.4.6159

Abstract

PROPERTIES OF EDIBLE FILM FROM MODIFIED SAGO STARCH PRECIPITATED BY BUTANOL Riska Surya Ningrum; Dewi Sondari; Putri Amanda; Bernadeta Ayu Widyaningrum; Dian Burhani; Fazhar Akbar; Yulianti Sampora
Jurnal Sains Materi Indonesia Vol 21, No 4: JULY 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.21.4.6022

Abstract

ROPERTIES OF EDIBLE FILM FROM MODIFIED SAGO STARCH PRECIPITATED BY BUTANOL. The edible film is a thin layer that can be used as food packaging and safe for consumption. Starch is a material that can be used as an edible film because it is biodegradable, non-toxic, able to form a strong and transparent film. In this research, sago starch has been precipitated using butanol for 1, 2, 3, 4, and 5 hours. Precipitated sago is reacted with 3% glycerol and then formed into a film by printing it on a petri dish. Characterizations of edible films are FTIR, contact angle, water solubility, swelling power, WVTR, and mechanical properties (thickness, tensile strength, and elongation). Edible film (B2) has the best mechanical properties, that is high hydrophobicity (contact angle is 60,351 degree), tensile strength (6,8843 N/mm2), and elongation (49,5081 %), also low water solubility (0,3352 %), moisture content (18,6005 %), and WVTR (0,02986 g s-1 m-2).
PREPARATION OF ACYCLOVIR-ISONICOTINAMIDE COCRYSTAL BY SOLVENT EVAPORATION METHOD WITH METHANOL AND ISOPROPANOL Agnes Nuniek Winantari; Roisah Nawatila; Cecilia Jocelyn
Jurnal Sains Materi Indonesia Vol 21, No 3: APRIL 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.21.3.5897

Abstract

PREPARATION OF ACYCLOVIR-ISONICOTINAMIDE COCRYSTAL BY SOLVENT EVAPORATION METHOD WITH METHANOL AND ISOPROPANOL. Acyclovir is a nucleoside synthetic analog antiviral group used in the treatment of Herpes simplex virus (HSV-1 & HSV-2) and Varicella zoster virus (VZV). Acyclovir has low water solubility, so it needs to be modified in the form of cocrystal with isonicotinamide. This study aims to obtain the physical characteristics produced by acyclovir-isonicotinamide cocrystal (1:1) made through the solvent evaporation method with methanol and isopropanol. The crystalline formed is characterized by DSC, PXRD, FT-IR and SEM. The characterization results showed the presence of new crystals that formed between acyclovir-isonicotinamide in methanol and isopropanol solvents. Thermograms showed sharp exothermic peaks at 183.31°C and 186.24°C. The diffractogram showed a new peak at 2θ = 5.19 and 5.82. The spectrum showed a shift in wavelength in the cocrystal formed. The cocrystal has a different morphology compared with parent drug and coformer on analysis using SEM. This research shows that acyclovir can form cocrystal with isonicotinamide by solvent evaporation method with methanol and isopropanol.

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