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All Journal Majalah Kulit, Karet, dan Plastik Jurnal Sains & Teknologi Lingkungan Communications in Science and Technology Jurnal Agrotek UMMat Jurnal Rekayasa Hijau Jurnal Teknologi Logic : Jurnal Rancang Bangun dan Teknologi Indonesian Journal of Halal Research Journal of Appropriate Technology for Community Services IJCR (Indonesian Journal of Chemical Research) Journal of Applied Agricultural Science and Technology Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Jurnal Teknologi Kimia Mineral

Muh. Wahyu Syabani

Politeknik ATK Yogyakarta

Author-ID : 515056

Religion Agriculture, Biological Sciences & Forestry Arts Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Social Sciences Other

Published : 27 Documents Claim Missing Document

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THE EFFECT OF RECYCLED POLYPROPYLENE AND CALCIUM CARBONATE ADDITION ON MECHANICAL PROPERTIES OF POLYPROPYLENE YARN Heni Fitri Astuti; Muh Wahyu Sya’bani
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 23 No 1 (2024): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

The use of recycled polypropylene can reduce the problem of plastic waste while lowering production costs. Likewise, the addition of calcium carbonate as a filler also reduces costs and influencing the mechanical characteristics of the plastic. However, this effort needs to consider the quality of the final product. This study aims to evaluate the effect of using recycled polypropylene and calcium carbonate on the mechanical characteristics of plastic yarn. Samples with PP : rPP : CaCO3 compositions of 100:0:0, 80:20:0, and 60:20:20 were used as comparisons. Each sample was processed and molded using an extruder machine and the resulting yarn was tested for tensile strength, elongation at break, and tenacity. The mechanical testing value was further confirmed using FTIR spectroscopy analysis. The research results showed that the FTIR spectra between virgin (PP) and recycled polypropylene (rPP) were similar. The tensile strength, elongation at break, and tenacity values of virgin polypropylene are 3.40 kg/mm2, 27.25%, and 5.70 kgf. The addition of 20% RPP shows a decrease in value to 3.10 kg/mm2, 23.60%, and 4.60 kgf due to the presence of parts that were degraded during reprocessing. Meanwhile, the addition of 20% calcium carbonate also provided lower mechanical test results of 2.65 kg/mm2, 22.50%, and 4.25 kgf due to the difficulties of distribution and dispersion of the filler in the polymer matrix.

Investigating the impact of nanoparticle geothermal silica loading on the mechanical properties and vulcanization characteristics of rubber composites Syabani, Muh Wahyu; Rochmadi; Perdana, Indra; Prasetya, Agus
Communications in Science and Technology Vol 8 No 1 (2023)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.8.1.2023.1190

The present study investigates the effects of nanoparticle geothermal silica (NGS) on the mechanical properties and vulcanization characteristics of rubber compounds with various filler loadings. The rubber compounds were filled with 0, 20, 30, and 40 phr of silica. The properties of NGS were analyzed using transmission electron microscopy, particle size analyzer, and BET surface area analysis to examine its morphology, size distribution, and surface area. The mechanical properties and vulcanization characteristics of the rubber compounds reinforced with NGS were evaluated using a universal testing machine and moving die rheometer. The results showed that NGS possessed the primary particle sizes below 20 nm and a surface area of 168.35 m2/g. The interaction between silica and rubber determined the modulus of the rubber composites and the vulcanization characteristics. The tensile strength of the rubber compounds, meanwhile, showed a significant increase more than threefold as the filler loading increased from 0 phr to 30 phr, followed by a slight decline at 40 phr loading. The addition of 20 phr of silica led to a prolonged scorch time compared to the filler-free compound due to the adsorption of activators and accelerators. However, the scorch time decreased after reaching 30 phr of silica loading, which could be attributed to the higher amount of bound rubber covering a portion of the silica surface, thereby reducing its ability to adsorb the activator. The presence of silica with good thermal conductivity enabled a better heat transfer during the vulcanization process, resulting in shorter curing times for higher loading. Rubber compounds with an NGS loading of 30 phr demonstrated a favorable balance between filler-rubber interactions, vulcanization characteristics, and mechanical properties in the rubber compounds.

KINETIKA VULKANISASI KARET MENGGUNAKAN BIOPLASTICIZER MINYAK KAKAO TEREPOKSI Satwikanitya, Pani; Saputra, Andri; Sya’bani, Muh Wahyu; Agustian, Mertza Fitra
JURNAL TEKNOLOGI KIMIA MINERAL Vol 2 No 1 (2023): JURNAL TEKNOLOGI KIMIA MINERAL
Publisher : Politeknik ATI Makassaar

Kinetika vulkanisasi karet menggunakan bioplasticizer minyak kakao terepoksi dipelajari berdasarkan data output moving die rheometer. Data percobaan didekati dengan beberapa model kinetika, yaitu model reaksi orde 1, orde 2, dan Deng-Isayev. Konstanta laju reaksi (k) pada model reaksi orde 1 dan orde 2 dihitung dari data torsi yang merupakan fungsi waktu (M = f(t)). Sedangkan pada model Deng-Isayev, nilai k dan orde reaksi (n) ditentukan menggunakan optimasi multivariable dengan tools Solver pada aplikasi Excel. Nilai energi aktivasi (Ea) diperoleh dari persamaan Arrhenius. Hasil penelitian memperlihatkan model Deng-Isayev dapat merepresentasikan data percobaan dengan baik. Konstanta laju reaksi sebanding dengan kenaikan suhu vulkanisasi. Reaksi vulkanisasi karet menggunakan minyak kakao terepoksi berlangsung pada orde (n) 3 dengan energi aktivasi (Ea) sebesar 157,55 kJ/mol.

Pemlastis epoksi ester minyak sawit sebagai pengganti epoksi minyak kedelai pada kulit imitasi Utami, Ratri Retno; Satwikanitya, Pani; Saputra, Andri; Syabani, Muh Wahyu; Indahwati, Luthfi Auliya; Ilmannafia, Danuraja
Jurnal Agrotek Ummat Vol 11, No 4 (2024): Jurnal Agrotek Ummat
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jau.v11i4.26741

A plasticizer is a liquid added to synthetic leather materials to make the product softer, more flexible, and easier to process. The development of sustainable plasticizers in this study was achieved using palm oil as the primary raw material. The study aimed to evaluate the application of epoxidized palm oil esters on imitation leather. The epoxidation process used palm oil esters as the base material, with acetic acid, hydrogen peroxide, and amberlite resin as catalysts. The mixture was heated to a temperature of 60 °C and stirred at a speed of 400 rpm for 4 hours. The resulting epoxy oil was then applied to the top layer of imitation leather, and its mechanical properties were tested. Epoxidized palm oil esters replaced 50% and 100% of epoxidized soybean oil the imitation leather. As a control, plasticizers from commercial epoxidized soybean oil were used. The mechanical test results showed that replacing 100% of the epoxidized soybean oil with palm oil esters in synthetic leather did not result in significant differences in longitudinal tensile strength and transverse elongation compared to the control. However, artificial leather with epoxidized palm oil esters demonstrated better tear resistance than the control. Further studies are required to determine the optimal conditions for the epoxidation reaction, fatty acid composition, and stability of epoxidized palm oil esters.

Pengaruh Waktu Kalsinasi Abu Cangkang Kelomang (Paguroidea) pada Suhu Tinggi dalam Pembentukan Katalis Padat CaO Mukminin, Amirul; Firdaus, Muhammad; Yuniarti, Yuniarti; Syabani, Muh Wahyu
INDONESIAN JOURNAL OF CHEMICAL RESEARCH VOLUME 4, ISSUE 1, 2019
Publisher : Chemistry Department, Universitas Islam Indonesia

Katalis CaO dari abu cangkang kelomang (Paguroidea) telah berhasil dibuat melalui proses kalsinasi pada suhu 900°C selama 4 jam. Variasi waktu kalsinasi 2, 3, dan 4 jam dilakukan untuk mempelajari tentang perubahan fasa sampel. Hasil difraksi sinar-X dari abu cangkang kelomang untuk 2 dan 3 jam menunjukkan bahwa puncak-puncak karakteristik CaCO3 kalsit sedangkan untuk 4 jam berupa kalsium oksida (CaO) dengan puncak karaktersitik pada 2 theta = 32,16°; 37,15°; 53,54°; 64,16° dan 67,5° yang dikonfirmasi sesuai dengan standard CaO (JCPDS N. 82-1690). Hasil SEM menunjukkan informasi topografi dari morfologi partikel katalis untuk waktu 2 dan 3 jam berbentuk agregat yang kurang homogen, jika dibandingkan dengan hasil kalsinasi pada waktu yang lebih lama yaitu 4 jam. Sebaran ukuran parikel untuk 2, 3 dan 4 jam masing-masing memberikan ukuran 0,3 mm-1,5 µm, 34,7 µm – 1,25 µm, dan 11,4 µm – 1 µm. Hasil TGA/DSC menunjukan 43,92 % cangkang kelomang mampu terkonversi menjadi CaO dan CaCO3 pada 900°C. Kata kunci: Katalis CaO, katalis heterogen, biodisel

Unveiling the Signature of Halal Leather: A Comparative Study of Surface Morphology, Functional Groups and Thermal Characteristics Syabani, Muh Wahyu; Iswahyuni, Iswahyuni; Warmiati, Warmiati; Prayitno, Kutut Aji; Saraswati, Henny; Hernandha, Rahmandhika Firdauzha Hary
Indonesian Journal of Halal Research Vol. 5 No. 2 (2023): August
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ijhar.v5i2.25702

The halal certification of products holds significant importance for Muslim consumers, necessitating the development of reliable techniques for identifying leather products made from raw materials. This study employed rapid and accurate analytical methods to distinguish between cowhide, pigskin, and artificial leather. A combination of scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC) was used to assess the variations in collagen fiber structures and thermal stability among the leather samples. The findings revealed that morphological surface analysis, including grain patterns and pores, facilitated swift differentiation between different leather types. Pigskins exhibit three-hole patterns on their morphological surface compared to cowhide, with random pores and tighter grain patterns, whereas artificial leather lacks natural grain patterns and pores altogether. While FTIR spectra exhibited similarities between cowhide and pigskin leathers, variations in vibration intensity enabled effective discrimination. Artificial leather, particularly PVC-based materials, displayed distinct spectra, allowing FTIR spectroscopy to effectively discern between halal and non-halal leather. Cowhide possesses strong and sharp vibration at wavenumber 1736, 1277, and 817 cm-1 compared to pigskin, which has stronger vibration at 1534 cm-1. Meanwhile, PVC-based artificial leather exhibited stretching at 1723 and 744 cm-1 wavenumbers. DSC analysis proved valuable in differentiating between genuine and artificial leather based on unique peaks and thermal behavior. These three techniques provide reliable means to determine the raw material origins of leather products.

Transesterification of Palm Olein to Fatty Acid Methyl Esters (POle-ME) Using Base Catalysts Ratri Retno Utami; Andri Saputra; Pani Satwikanitya; Muh Wahyu Sya’bani; Warmiati Warmiati; Luthfi Auliya Indahwati; Danuraja Ilmannafia
Journal of Applied Agricultural Science and Technology Vol. 9 No. 3 (2025): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v9i3.344

Palm olein esters are potentially convertible into epoxy oil, which can serve as a plasticizer. Palm olein can be reacted with alcohol in the presence of a base catalyst in a process named transesterification. This study aimed to investigate the application of palm olein to produce fatty acid methyl esters (POLe-ME) using sodium hydroxide and potassium hydroxide as catalysts, which are then evaluated for their potential as plasticizers. The research process involved selecting raw materials based on the iodine and acid numbers. Subsequently, transesterification was conducted using 1% base catalysts. The characterization of POle-ME included evaluating its acid number, iodine number, viscosity, fatty acid composition, and functional groups. The findings indicate that using a molar ratio of oil to methanol of 1:6 and potassium hydroxide as a catalyst achieved the highest yield at 94.99%. The produced POle-ME exhibited a peak at 1436 cm-1, indicating the presence of a methyl ester functional group. The fatty acid composition of POle-ME consisted predominantly of oleic unsaturated fatty acid (C18:1) at 49.13%. Additionally, POle-ME exhibited an iodine number of 60.42, an acid number of 1.395, and a viscosity of 7.16 mPa·s, indicating its potential as a raw material for epoxy oil (plasticizer) production.

Co-Authors Agus Prasetya Agustian, Mertza Fitra Ahmad Faisal Rosadi Amirul Mukminin Andreas D Angkasa Andri Saputra Andri Saputra Arief Krisna Wibowo Cynthia Devi Danuraja Ilmannafia Ega Holiyan Meilia Langga Fikri Irfani Fauziyyah Fitria Puspita Heni Fitri Astuti Hermiyati, Indri Hernandha, Rahmandhika Firdauzha Hary Herry Suseno Ilmannafia, Danuraja Ina Amaliana Indahwati, Luthfi Auliya Indra Perdana Indri Hermiyati Iswahyuni Iswahyuni Khairunisa Betariani Listyalina, Latifah Lucky Wahyu Nuzulia Setyaningsih Luthfi Auliya Indahwati Mario Sarisky Dwi Ellianto Mertza Fitra Agustian Mertza Fitra Agustian Mertza Fitra Agustian Muhammad Firdaus Muhammad Ikhwan Muhammad Ikhwan Nastiti Afiati Pani Satwikanitya Pani Satwikanitya Prayitno, Kutut Aji Putra Oktavianto Qonita Usthufiya R. Lukas Martindro Satrio Ari Wibowo R. Lukas Martindro Satrio Ari Wibowo, R. Lukas Martindro Satrio Ari R.L.M.S. Ari Wibowo Raden Bagus Seno Wulung Ratri Retno Utami RLM. Satrio Ari Wibowo Rochmadi RR. Ella Evrita Hestiandari Saputri, Lestari Hetalesi Saraswati, Henny Satwikanitya, Pani Sri Sumarni Suharyanto Suharyanto Suharyanto Tintin Mutiara Uma Fadzilia Arifin Wahyu Ratnaningsih Warmiati Warmiati Warmiati Warmiati Warmiati Warmiati, Warmiati wisnu pambudi Wisnu Pambudi Yuli Suwarno Yuniarti Yuniarti Yuniarti Yuniarti

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