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All Journal Indonesian Journal of Chemical Studies (Indones. J. Chem. Stud.) JPM-AKA
Mualim, Ahmad Dzaky
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Chemistry 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.
Optimasi Proses Produksi Tahu Bandung dan Penerapan Industri 4.0 Di IKM Tahu Tansa Bogor Prihadi, Anton Restu; Maimulyanti, Askal; Styani, Erna; Mualim, Ahmad Dzaky; Puspita, Fitria; Putri, Fajar Amelia Rachmawati
Jurnal Pengabdian Masyarakat AKA Vol 4, No 2 (2024): Desember 2024
Publisher : Politeknik AKA Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55075/jpm-aka.v4i2.254

Abstract

IKM Tahu Tansa merupakan salah satu IKM di Kota Bogor yang memproduksi Tahu Bandung. Seiring dengan perkembangan waktu dan peningkatan produksi, IKM mengalami beberapa permasalahan seperti konsistensi kualitas organoleptik tahu yang disebabkan oleh suhu pemasakan dan penambahan garam yang tidak konsisten selain itu keterbatasan alat pada proses penyaringan kedelai. Pada akhirnya, hal ini dapat menimbulkan resiko penurunan kualitas dan kuantitas produksi tahu dan berpotensi meningkatkan biaya produksi yang berdampak pada lonjakan harga jual tahu. Berdasarkan permasalahan tersebut, tim PkM Politeknik AKA Bogor bermaksud untuk memberikan alternatif solusi penyelesaian  permasalahan yang dihadapi yaitu berupa pelatihan metode pengawasan suhu pemasakan agar optimum menggunakan teknologi arduino. Aplikasi ini akan memudahkan pekerja untuk memantau suhu sebenarnya di dalam kuali masak. Proses pemasakan yang optimum akan menyebabkan matinya seluruh bakteri patogen yang terdapat pada adonan tahu. Efektivitas proses pemasakan ini akan dipantau melalui analisis mikrobiologi. Sedangkan konsistensi penambahan garam pada adonan tahu  akan dipantau menggunakan titrimetri metode Mohr. Setelah diuji mutunya terkait kadar garam dan kadar mikroba dapat disimpulkan bahwa tahu bandung yang diproduksi IKM memiliki kualitas yang konsisten dan bebas dari bakter E.coli 
Co-Authors Achmad Nandang Roziafanto, Achmad Nandang Alfiani, Putri Khoirurrizal, Muhammad Fadhil Maimulyanti, Askal Maryam, Saffana Prihadi, Anton Restu Puspita, Fitria Putri, Fajar Amelia Rachmawati Putri, Yasinta Rahmatul Sabarno, Abiyyu Adistya Wahid Styani, Erna