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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
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PENGGUNAAN SENSOR FLUXGATE HARMONISA KEDUA UNTUK MENGUKUR MEDAN MAGNETIK SEARAH DUA DIMENSI Ivan Limansyah; Mitra Djamal
Jurnal Sains Materi Indonesia Vol 5, No 1: OKTOBER 2003
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.603 KB) | DOI: 10.17146/jusami.2003.5.1.5218

Abstract

PENGGUNAAN SENSOR FLUXGATE HARMONISA KEDUA UNTUK MENGUKUR MEDAN MAGNETIK SEARAH DUA DIMENSI. Sensor medan magnetik fluxgate merupakan solusi dalam pengukuran medan magnetik searah yang besarnya relatif kecil yang murah, akurat dan sederhana. Dengan menambahkan sedikit pengembangan maka sensor ini dapat digunakan untuk mengukur besar dan arah medan magnetik luar. Dengan menambahkan kumparan pendeteksi yang memiliki arah tegak lurus dengan kumparan pendeteksi semula maka dapat dibuat sensor medan magnetik fluxgate yang dapat mengukur medan dalam arah dua dimensi.
HYDROGELS MICRO COMPOSITES BASED ON POLYVINYL ALCOHOL/BENTONIT A. Zainal Abidin; Y. Andre Situmorang; Irwan Noezar
Jurnal Sains Materi Indonesia Vol 13, No 4: Edisi Khusus Material untuk Kesehatan
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (96.463 KB) | DOI: 10.17146/jsmi.2012.13.4.4740

Abstract

HYDROGELS MICRO COMPOSITES BASED ON POLYVINYL ALCOHOL/BENTONITE. Hydrogels micro composite for biomedical application has been synthesized from polyvinyl alcohol (PVA) with degree of hydrolyzed 98-99% and bentonite as reinforcement using freeze and thawing technique with 3 cycles. Sodium bentonite used has been sized to 305 nm in average using planetary ball mill. Variation of bentonite composition used in the synthesis are 2.5%, 5%, 10% and 15%w. The hydrogel had been analyzed for its common properties such as gel fraction, Equilibrium Degree of Swelling (EDS), Equilibrium Water Content (EWC) and Water Vapor Transmission Rate (WVTR). While its chemical structure was identified using Fourier Transform-Infra Red (FT-IR) Spectrophotometer and its morphology was characterised using Scanning Electron Microscope (SEM) and X-Ray Diffractometer (XRD). Additionally, its thermal properties were analyzed using Differential Scanning Calorimetry (DSC), and its mechanical properties were tested by tensile machine. Effect of bentonite composition from 0 %w to 15 %w in hydrogel micro composite is decreasing the water absorption capacity from 67.79 % to 52.17 % and increasing the gel fraction from 78.43 % to 94.48 %. As more bentonite added, the composite strength increases by increase in tensile stress from 2.18 MPa to 3.48 MPa, while the water vapor transmission rate decreases from 53.07 g/m2h to 34.42 g/m2h. The hydrogel micro composite melting point does not change with the bentonite addition, i.e. in the range of 230-235 oC, but its glass transition temperature (Tg) increases from 127.8 oC for 0 %w to 147.2 oC for 5 %w.
EFEK PENAMBAHAN ASAM FENILFOSPONAT-SENG, TALK DAN TRIASETIN TERHADAP LAJU KRISTALISASI POLIASAM LAKTAT Lisman Suryanegara; Putri Yuliansih; Firda Aulya Syamani; Raden Permana Budi Laksana; Subyakto Subyakto; Zaenal Abidin
Jurnal Sains Materi Indonesia Vol 19, No 3: APRIL 2018
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.2018.19.3.4265

Abstract

Dalam aplikasi industri, salah satu kekurangan poli asam laktat (PLA) adalah kristalisasi yang lambat, sehingga meneyebabkan waktu yang lebih lama untuk mengolah PLA dibandingkan dengan polimer konvensional seperti polipropilen. Penelitian ini mengevaluasi pengaruh penambahan pengisi atau aditif terhadap laju kristalisasi PLA. PLA dilarutkan dalam diklorometana (DCM) dan dicampur dengan nucleating agent (seng asam fenilfosfonat atau talk) atau pelunak (triasetin) pada konsentrasi yang berbeda diikuti dengan pengeringan pada suhu kamar selama 24 jam dan  pengeringan oven selama 2 jam pada suhu 80 °C. Campuran kering PLA  ditempa panas pada 180 °C selama 10 menit. Differential Scanning Calorimetry (DSC) dilakukan untuk mengevaluasi tingkat kristalisasi. Hasil studi menunjukkan bahwa penambahan pengisi atau aditif mempercepat proses kristalisasi PLA. Asam seng fenilfosponat (PPA-Zn) adalah pengisi yang paling efektif untuk mempercepat laju kristalisasi PLA.
PHOTOCATALYTIC KINETICS OF GASEOUS ACETALDEHYDE DEGRADATION ON LOW INTENSITY ULTRA VIOLET IRRADIATED TiO2 Sopyan, Iis; Slamet, Slamet; Moedrik, Irwan
Jurnal Sains Materi Indonesia Vol 3, No 1: OKTOBER 2001
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1097.987 KB) | DOI: 10.17146/jusami.2001.3.1.5245

Abstract

PHOTOCATALYTIC KINETICS OF GASEOUS ACETALDEHYDE DEGRADATION ON LOW INTENSITY ULTRA VIOLET IRRADIATED TiO2. The kinetics of photocatalytic degradation of gaseous acetaldehyde with semiconductor catalyst TiO2 was studied. The experiment was carried out using TiO2 photocatalyst prepared from titanium tetrachloride (TiCl4) and titanium(lV) isoproxide (Ti(OPr)4) as the starting materials. Comercially available highly active TiO2 from Merck was used for purposes ofcomparison The TiO2 films were prepared on soda lime plates and an SiO2-coated soda lime plate using sol-gel method and dip-coating techniques The photocatalytic kinetics of the catalysts were assessed by measuring the photodegradative oxidation of gaseous acetaldehyde at various initial concentrations, UV intensities, and shapes of catalyst. The Merck powder shown the highest photocatalytic activity. All reactions proceeded with approximately first-order reaction kinetics (as indicated from the linear transforms ln(C0/C) as function of irradiation time), especially for the relatively low initial concentration. Meanwhile, at high initial concentration of acetaldehyde, photocatalytic reactions occurred with approximately zero-order kinetics. TiO2 film photocatalyst supported on soda lime plate shown lower photocatalytic activity than the powder one, however, when the films were coated on SiO2-coated soda lime plate, photocatalytic activity of the resulting film increased and even higher than that of the powder form.
CURRENT STATUS OF NANO CHARACTERIZATION PRODUCT PT. JJ EXECUTIVE INTERNATIONAL Jefry Jefry
Jurnal Sains Materi Indonesia EDISI KHUSUS: OKTOBER 2007
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (216.191 KB) | DOI: 10.17146/jusami.2007.0.0.5099

Abstract

CURRENT STATUS OF NANO CHARACTERIZATION PRODUCT PT. JJ EXECUTIVE INTERNATIONAL. Material analysis Instrumentation and characterization equipment are rapidly develop in this recent decade. Many new techniques and new instrumentation are introduced for researcher to overcome the limitation and conventional technique as in last decade
INVESTIGATING THE NANOCRYSTALLINITY OF SOL GEL DERIVED TiO2 NANOPARTICLES UPON ANNEALINGAND POST HYDROTHERMAL TREATMENTS Akhmad Herman Yuwono; Alfian Ferdiansyah; Arif Rahman; Wulandari Handini
Jurnal Sains Materi Indonesia Vol 12, No 2: FEBRUARI 2011
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (67.6 KB) | DOI: 10.17146/jsmi.2011.12.2.4601

Abstract

INVESTIGATING THE NANOCRYSTALLINITY OF SOL GEL DERIVED TiO2 NANOPARTICLES UPON ANNEALINGAND POST HYDROTHERMAL TREATMENTS. The present study is aimed at investigating the major factor causing the low nanocrystallinity nature of the sol gel derived TiO2 nanoparticles. For this purpose, TiO2 nanoparticles of different nanocrystallinity was synthesized by various hydrolysis ratio (Rw) of 0.85; 2.00 and 3.50 upon sol solution preparation, followed with subsequent drying, conventional annealing and post-hydrothermal treatments. The resulting nanoparticles were studied by dynamic light scattering, XRD and FT-IR spectroscopy which confirm that the highly amorphous state of TiO2 is related to the fast development of stiff Ti-OH networks during hydrolysis and condensation upon sol gel process. A post hydrothermal treatment involving high-pressure water vapor has been successfully devised to enhance the nanocrystallinity of TiO2 nanoparticles. It has been found in this study that Rw value of 2.00 was the optimum hydrolysis ratio during sol solution preparation of TiO2 precursor to result in the most enhanced nanocrystallinity as represented with the biggest crystallite size of 12.46 nm.
PENGARUH KONSENTRASI (NH4)2SO4 TERHADAP KARAKTERISTIK Ti2O HASIL SINTESIS DENGAN METODE SOL GEL Siti Wardiyati; Wisnu Ari Adi; Erwa Syahbani
Jurnal Sains Materi Indonesia Vol 16, No 4: JULI 2015
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (881.77 KB) | DOI: 10.17146/jsmi.2015.16.4.4224

Abstract

PENGARUH KONSENTRASI (NH4)2SO4 TERHADAP KARAKTERISTIK Ti2O HASIL SINTESIS DENGAN METODE SOL GEL. Ti2O anatase telah berhasil disintesis dengan metode sol-gel menggunakan prekursor titanium klorida (TiCl4) dalam berbagai konsentrasi (2,0 M- 6,0 M) (NH4)2SO4. Penelitian ini bertujuan untukmengetahui pengaruh konsentrasi garam (NH4)2SO4 terhadap karakteristik Ti2O hasil sintesis, seperti ukuran partikel, luas permukaan, band gap dan kinerja fotokatalitik Ti2O terhadap degradasi methylene blue. Karakterisasi Ti2O hasil sintesis dilakukan dengan menggunakan alat X-Ray Diffractometer (XRD) untuk mengetahui fasa yang terbentuk, Transmission Electron Microscope (TEM) untuk menentukan ukuran partikel, surface area analyzer untuk mengukur luas permukaan, UV-Visible Diffuse Reflectance Spectroscopy (UV-Vis DRS) untuk menentukan nilai energi gap, dan UV-Vis Lambda 25 untuk menentukan konsentrasi methylene blue. Hasil karakterisasi menunjukkan bahwa Ti2O hasil sintesis telah terdoping oleh atom N dan S, berbentuk kristalin dengan fasa anatase, ukuran partikel berkisar 5 nm hingga 15 nm, dan nilai energi band gap bervariatif dari 2,44 eV hingga 3,03 eV. Konsentrasi (NH4)2SO4 optimum dicapai pada (NH4)2SO4 4,0 M, dan pada konsentrasi tersebut Ti2O yang diperoleh dapat mendegradasi senyawa methylene blue 10 mg/L hingga 92%dengan konsentrasi katalis 1 g/L.
OPTIMASI UKURAN PARTIKEL DAN KOMPOSISI DALAM PEMBUATAN TEGEL KOMPOSIT PARTIKULAT GRANIT Budiarto Budiarto; Parikin Parikin; Mohammad Dani
Jurnal Sains Materi Indonesia Vol 6, No 1: OKTOBER 2004
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (832.676 KB) | DOI: 10.17146/jsmi.2004.6.1.4921

Abstract

OPTIMASI UKURAN PARTIKEL DAN KOMPOSISI DALAM PEMBUATAN TEGEL KOMPOSIT PARTIKULAT GRANIT. Bahan tegel komposit partikulat granit bennatriks epoxy dapat diharapkan sebagai bahan lantai yang kedap air dan cukup ulet. Penggunaan bahan komposit bagi industri rumah tangga menjadi penting dan cukup menjanjikan. Pembuatan bahan dimulai dari pembubukan batuan granit hingga ukuran mesh 100, 140 dan 200. Bubuk ini kemudian dicampur dengan epoxy yang telah diberi hardener versamid, dalam wadah plastik. Sambil diaduk hingga terlihat homogen. Pencetakan spesimen uji dilakukan dalam wadah kaca yang diberi wax dan di-curing dalam ambient temperatur selama 48 jam. Bahan spesimen dipotong-potong sesuai kebutuhan pengujian; kerapatan, kekerasan, kompresi dan bending. Hasil uji kekerasan dan kerapatan memperlihatkan perubahan nilai yang jelas dari komposisi partikulat (34, 40, 50 dan 70) dan matriks (66, 60, 50 dan 30). Sedang pengujian kompresi dan bending memperlihatkan optimum ukuran partikulat antara angka 120-123μm dan komposisi partikulat granit berada diantara angka 55-61 % berat. Nilai-nilai akurat ini dapat diprediksi dengan proses diferensiasi. Disimpulkan untuk mendapatkan sifat mekanik bahan komposit yang optimum, partikulat granit harns dibuat berukuran sekitar 121μm dan komposisi partikulat granit 57%.
KAJI KELAYAKAN NILAI FLUIDITAS SEBAGAI INDIKATOR KUALITAS INGOT PADUAN ALUMINIUM DI INDUSTRI Sri Harjanto; Bambang Suharno
Jurnal Sains Materi Indonesia Vol 9, No 1: OKTOBER 2007
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.629 KB) | DOI: 10.17146/jusami.2007.9.1.4778

Abstract

KAJI KELAYAKAN NILAI FLUIDITAS SEBAGAI INDIKATOR KUALITAS INGOT PADUAN ALUMINIUM DI INDUSTRI. Salah satu upaya pengurangan kegagalan (reject) dalam proses produksi pengecoran cetak tekan (die casting) logam aluminium paduan adalah dengan menjaga kualitas bahan baku ingot aluminium dari pengotor. Pengotor logam aluminium paduan yang berupa oksida, karbida, garam atau senyawa lainnya dapat menyebabkan terbentuknya cacat inklusi dan porositas pada produk pengecoran. Pengotor tersebut diyakini mempengaruhi fluiditas (sifat mampu alir) aluminium cair. Dengan kata lain, makin bersih logam aluminium cair fluiditas akan makin tinggi. Oleh karena itu, penelitian ini ditujukan untuk menjadikan nilai fluiditas logam paduan aluminium silikon 12% (ADC 12) sebagai indikator kualitas bahan baku proses pengecoran cetak tekan. Nilai fluiditas paduan aluminium silikon dari beberapa pemasok diamati dengan menggunakan alat uji vakum. Hasil penelitian menunjukkan bahwa nilai fluiditas pada suhu pengujian 640 oC sampai dengan 700 oC untuk ingot jenis Al-A = 100-125 mm + 10 mm dan Al-B = 100-175 mm + 51 mm dan Al-C = 100-175 + 24 mm, berturut-turut. Dengan demikian, kualitas ingot Al-C relatif lebih baik dibanding Al-A dan Al-B ditinjau dari sifat mampu alir yang ditunjukkan oleh nilai fluiditas dan konsistensi pemrosesan yang ditunjukkan oleh simpangannya. Pengamatan strukturmikro menunjukkan bahwa populasi porositas Al-C (1,37%) relatif lebih rendah dibanding jenis Al-A(2,35%) dan Al-B (1,82%).
FABRICATION OF UNGLAZED CERAMIC TILE USING DENSE STRUCTURED SAGO WASTE AND CLAY COMPOSITE Aripin Aripin; S. Tani; S. Mitsudo; T. Saito; T. Idehara
Jurnal Sains Materi Indonesia Vol 11, No 2: FEBRUARI 2010
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (137.266 KB) | DOI: 10.17146/jusami.2010.11.2.4580

Abstract

FABRICATION OF UNGLAZED CERAMIC TILE USING DENSE STRUCTURED SAGOWASTE AND CLAY COMPOSITE. In Indonesia, the sago processing industry generates every year huge amount of sago waste, and converting this waste into a useful material is possible. In the present study, physical properties of dense structured sago waste and clay composite were investigated in order to study the feasibility of reuse this sample as raw material in the producing of ceramics. Firstly, the chemical composition of ash (obtained from the sago waste) and clay was characterized. The prepared sample was sintered at the temperature range from 800 to 1,200 oC using electric furnace. The density, linear shrinkage and water absorption of the sintered sample were determined by using the Archimedes' method. The experimental result indicated that the density of the sintered sample increased with increasing sintering temperature up to 1100oC and then slightly decreased afterward. The water absorption of the products decreased with an increase in sintering temperature. In the sintered sample at 1,100 oC, the water absorption decreased rapidly and water adsorption of less than 1% was achieved. This water absorption was less than 5% which was needed for unglazed floor tile. The result of water adsorption suggest that it is possible to use this sample as a raw material for producing the ceramic floor tile.

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