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Utilization Of Crude From Part Of Kepok Banana Trees With Maceration Extraction As Textile Colors Wahidin Nuriana; Marti Winarni
Agroindustrial Technology Journal Vol. 4 No. 2 (2020): Agroindustrial Technology Journal
Publisher : Universitas Darussalam Gontor

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Abstract

The purpose of this study was to obtain a natural textile dye taken from the sap from the banana tree part. To obtain the yield yield of dyes and the intensity of the sap collection isdone by maceration extraction process. The part of the banana tree taken by the sap is the stem, stem and fruit stalk. This research was conducted with the sorting stage, namely thinly slicing stems, midribs and fruit stalks. The results of sorting are dried in the sun for 5 days in the sun then crushed until smooth with a size of 60-80 mesh. The powder was extracted by maceration by immersing each stem, stem and fruit stalk with soaking media: aquades, methanol, ethanol and ethyl acetate for 5 days with manual stirring. The filtrate is distilled so that it gets concentrated liquid and in the oven to become a dye powder. In the powder, yield and color testing are done using a spectrophotometerUV Vis. The most optimal yield produced is on the banana fronds with methanol mediais 22.8248%.. The optimal color intensity was obtained on banana stalks using methanol maceration medium and methanol dilution is 0.505
Analisa Pengaruh Variasi Waktu Perendaman Serat Rumput Gajah (Pennisetum purpureum) Dalam Larutan Kalium Hidroksida (KOH) Terhadap Kuat Tarik Dimas Ahmad Dimas; Sutrisno Sutrisno; Wahidin Nuriana; Muhammad Hasan Basri
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 2 (2026): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i2.476

Abstract

The use of natural fibers as alternative materials continues to attract attention because they are environmentally friendly, economical, and readily available. Elephant grass (Pennisetum purpureum) is one natural fiber with potential for such applications. This study investigated the effect of different immersion times in potassium hydroxide (KOH) solution on the tensile properties of single elephant grass fibers. We used an experimental method with 10% KOH alkaline treatment and immersion times of 0, 2, 4, 6, and 8 hours. Tensile testing was conducted using a Universal Testing Machine (UTM) to determine tensile stress, strain, and elastic modulus. The results showed that immersion time affected the mechanical properties of the fibers. The highest tensile stress, strain, and elastic modulus were obtained after 8 hours of immersion, reaching 8868.11 MPa, 14%, and 63523 MPa, respectively the alkaline treatment removed impurities from the fiber surface, improving its ability to withstand tensile loading. Therefore, 8 hours of immersion in 10% KOH provided the optimum result and demonstrated the potential of elephant grass fiber as reinforcement for environmentally friendly composites.