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All Journal Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Teknik Mesin Indonesia
Muhammad Mujiburohman
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Aerospace Engineering Automotive Engineering Computer Science & IT Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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ISOLASI ALFA SELULOSA DARI BATANG PISANG KLUTUK (Musa balbisianaColla) Restu Zulaekha; Sulton Afkhar Nawafil; Santi Fitri Harianti; Muhammad Mujiburohman; Nur Hidayati
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2018): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 9 2018
Publisher : Prosiding SNST Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (124.734 KB)

Abstract

Penelitian ini bertujuan mengisolasi alfa-selulosa, yang merupakan bahan baku pembuatan selulosa asetat, dari batang pisang klutuk (Musa balbisiana Colla) melalui proses pelarutan-pengendapan, bleaching, dan pengeringan. Proses pelarutan dan pengendapan menggunakan larutan NaOH, dan larutan H2O2 dalam proses bleaching-nya. Variabel yang dipelajari mencakup variasi ukuran serbuk batang pisang (70, 100 mesh), rasio massa serbuk (3, 6, 9, 12 gram) dengan volume pelarut NaOH 17,5% (100 mL), serta konsentrasi larutan H2O2 (3,6,9, 12%). Hasil terbaik pengendapan mendapatkan alfa-selulosa sebanyak 1,726 gram dari serbuk 6 gram ukuran 70 mesh (recovery 28,77%). Hasil terbaik proses bleaching mendapatkan recovery alfa-selulosa relatif murni sebesar 30,36% pada konsentrasi larutan H2O2 3%. Alfa-selulosa hasil bleaching merupakan bahan baku pembuatan selulosa asetat kualitas terbaik. Kata kunci : alfa-selulosa, bleaching, H2O2,NaOH, pengendapan
A Pengaruh Kuat Tekan dan Daya Serap Air Laut Pada Material Komposit Sandwich Serat Sabut Kelapa Jayadin; Muhammad Mujiburohman; Handik Hendratama; Tri Widayatno; Nur Arifah Hidayati; Hamzarudin Hikmatiar
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.809

Abstract

The need for boards as a material for furniture is increasing, therefore alternative materials are needed to replace wooden boards, such as sandwich composite boards. Coconut is a tropical plant that has long been known by Indonesian people. Coconut is one of the plants that can be used as a composite board, namely coconut fiber. This research aims to make composite boards from coconut fiber to determine the compressive strength and absorption capacity of sea water. The materials for this research are coconut fiber and polyester resin. Coconut fiber is a waste that is rarely used so the waste can become serious waste. This research uses the Compressing Molding method at room temperature where the mold is loaded. In this research, compression testing uses ASTM D 659 standards and seawater absorption testing uses ASTM D 570 standards. The results of this research show optimal conditions at a volume fraction of 20% with a core thickness of 6 mm, namely 8,230 MPa in compression testing and 25% thickness. The 8 mm core in the Sea Water Absorption Capacity test had the lowest absorption capacity at 0.16%.
Co-Authors Handik Hendratama Jayadin Nur Hidayati Restu Zulaekha Santi Fitri Harianti Sulton Afkhar Nawafil Tri Widayatno