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All Journal Indonesian Journal of Chemistry Warta AKAB Indonesian Journal of Chemical Studies (Indones. J. Chem. Stud.) JPM-AKA
Achmad Nandang Roziafanto, Achmad Nandang
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Materials Science & Nanotechnology Social Sciences

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Development of Adhesive Materials from Polystyrene Foam Waste Mualim, Ahmad Dzaky; Roziafanto, Achmad Nandang; Sabarno, Abiyyu Adistya Wahid; Khoirurrizal, Muhammad Fadhil; Alfiani, Putri; Maryam, Saffana; Putri, Yasinta Rahmatul
Indonesian Journal of Chemical Studies Vol. 3 No. 2 (2024): Indones. J. Chem. Stud., December 2024
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ijcs.v3i2.62

Abstract

Polystyrene is a type of plastic that is difficult to decompose naturally, leading to waste that contributes to environmental pollution. This study developed adhesive materials based on polystyrene waste to reduce environmental impacts while addressing the need for eco-friendly adhesives. The adhesives were prepared by dissolving polystyrene foam waste in gasoline and acetone with various compositions. The solvents with a composition ratio of gasoline and acetone of 100:0; 90:10; 80:20; 70:30; 60:40; and 50:50 were coded as A, B, C, D, E, and F. Tests were carried out to determine the solubility of polystyrene foam in various solvent compositions and the mechanical properties of samples, including shear force, shear strength, and strain (elongation). Paper, cardboard, and wood were used as gluing materials. The adhesive strength was also compared with that of commercial adhesives. The adhesive samples were then characterized using Fourier-Transform Infrared Spectroscopy (FTIR). The shear strength results obtained for samples code A, B, C, D, E, and F were 119.95 kPa, 103.68 kPa, 96.64 kPa, 124.56 kPa, 150.08 kPa, and 157.80 kPa, respectively. The findings showed that the adhesive sample coded F synthesized using a solvent composition of 50: 50 gasoline: acetone exhibited superior adhesive ability than other variations. This sample can potentially serve as a substitute for commercial adhesives that are suitable for bonding various materials.
Cold Plasma-Induced Surface Modification of Microfibrillated Cellulose Using Lauric Acid to Enhance Compatibility in Polymer Composites Rifathin, Annisa; Wijaya, Ade Mundari; Roziafanto, Achmad Nandang; Laksmono, Joddy Arya; Nugraha, Adam Febriyanto; Chalid, Mochamad
Indonesian Journal of Chemistry Vol 25, No 4 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.104738

Abstract

Green materials, such as microfibrillated cellulose (MFC), are increasingly used as fillers in polymer composites for academic and industrial applications. However, their inherent hydrophilic property limits compatibility with polymer matrix. This study employs an environmentally friendly cold plasma technique to modify the surface of MFC, improving its compatibility with the polymer. Plasma treatment was performed at a voltage of 60 V for 30 min by making three molar ratios (3:1, 4:1, and 5:1) between lauric acid as a hydrophobic precursor and anhydroglucose (AGU). The results indicate several changes in the modified MFC properties, as evidenced by the appearance of a new peak at a wavenumber of 1742 cm−1 (ester’s C=O) in FTIR spectra, indicating successful plasma-induced grafting. XPS results also confirm the formation of O–C=O bond at a binding energy of 289.3 eV. The optimum conditions were obtained at a molar ratio of 4:1 (lauric acid:AGU). There was a decrease in the hydrophilic property of MFC, indicated by an increase in the water contact angle from 50.16° to 71.26°. Moreover, the surface tension difference between MFC and polypropylene was significantly reduced from 136.99 to 47.51%, suggesting improved compatibility.
Uji Kesesuaian Sistem, Spesifitas, Linearitas dan Presisi pada Penetapan Kadar Vitamin E 75 HP dalam Bahan Awal Vitamin E 75 HP secara Ultra High Performance Liquid Chromatography (UHPLC) Ultraviolet Detection Widyasmara, Arum; Pratiwi, Amelia; Roziafanto, Achmad Nandang
Journal Warta AKAB Vol 49, No 2 (2025): Desember 2025
Publisher : Politeknik AKA Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55075/wa.v49i2.296

Abstract

Ultra High Performance Liquid Chromatography (UHPLC) merupakan metode analisis dengan efisiensi tinggi, cepat, dan sensitif. Namun, metode penetapan kadar Vitamin E 75 HP pada bahan awal Vitamin E 75 HP secara UHPLC sebelumnya belum tervalidasi, sehingga perlu dilakukan pengujian beberapa parameter kinerja metode yang mendukung validasi metode seperti: uji kesesuaian sistem, uji spesifitas, linieritas, akurasi, presisi, batas deteksi dan batas kuantitasi. Analisis dilakukan menggunakan sistem UHPLC UV Detector menggunakan  kolom Bondapack C18 (150 mm x 3,9 mm) dengan fase gerak terdiri dari kombinasi methanol:purified water:asam asetat dengan perbandingan (97:2:1), laju alir 1,5 mL/menit, volume injeksi 10 μL, dan panjang gelombang 284 nm. Pada uji kesesuaian sistem didapatkan nilai % RSD 0,77%, uji spesifitas memperlihatkan tidak ada satupun peak pada solvent maupun fase gerak, uji linieritas pada konsentrasi 70%,80%,90%,100%,110% dan 120% menunjukkan nilai koefisien korelasi 0,9992. Uji akurasi pada larutan standar 80%,100% dan 120% berturut turut 100,21%, 100,66% dan 100,44%. Nilai %RSD pada uji ripitabilitas dan presisi antara berturut turut 1,21% dan 1,34%. Berdasarkan hasil penetapan bahan awal Vitamin E 75 HP secara UHPLC terhadap parameter uji kesesuaian sistem, spesifitas, linearitas, akurasi, presisi, batas deteksi dan batas kuantitasi teoritis telah memenuhi syarat keberterimaan.
Pelatihan Pengolahan Limbah Tahu Pong Menjadi Kompos Menggunakan Sensor Suhu Berbasis Teknologi 4.0 pada IKM Aceng Pong di Desa Cipayung, Megamendung, Jawa Barat Riswati, Nur Indah; Lestari, Endang Sri; Roziafanto, Achmad Nandang; Fadela, Dian Mira; Diksy, Yuris
Jurnal Pengabdian Masyarakat AKA Vol 5, No 2 (2025): Desember 2025
Publisher : Politeknik AKA Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55075/jpm-aka.v5i2.291

Abstract

Pengolahan limbah merupakan permasalahan yang seringkali dihadapi oleh para pelaku industri, khususnya IKM. Hal ini dapat diatasi dengan memberikan edukasi kepada pelaku IKM mengenai cara pengolahan limbah yang tidak hanya akan bermanfaat bagi lingkungan namun juga dapat memberikan penghasilan tambahan bagi mereka. Oleh karena itu, PkM merupakan salah satu kegiatan yang bertujuan memberikan edukasi agar limbah yang dihasilkan tidak memberikan dampak negatif bagi lingkungan, khususnya bagi IKM Tahu Pong Aceng yang berlokasi di Desa Cipayung, Megamendung, Jawa Barat. Kegiatan dilakukan melalui pelatihan membuat pupuk kompos dari limbah tahu menggunakan komposter yang dilengkapi dengan sensor suhu sebagai rangkaian dari teknologi 4.0. Hasil pupuk kompos kemudian dapat pula dijual oleh pelaku IKM untuk menambah pendapatan. Hal ini sejalan dengan maksud dan tujuan kegiatan PkM yang ingin memberikan manfaat bagi pelaku IKM baik dari segi pengetahuan maupun ide untuk menambah pemasukan. Kegiatan PkM yang dilaksanakan selama 2 (dua) hari dapat diterima dengan baik oleh pelaku IKM.
Co-Authors Adam Febriyanto Nugraha Alfiani, Putri Amelia Pratiwi Diksy, Yuris Endang Sri Lestari Fadela, Dian Mira Joddy Arya Laksmono Khoirurrizal, Muhammad Fadhil Maryam, Saffana Mochamad Chalid Mualim, Ahmad Dzaky Putri, Yasinta Rahmatul Rifathin, Annisa Riswati, Nur Indah Sabarno, Abiyyu Adistya Wahid Widyasmara, Arum Wijaya, Ade Mundari