Pengaruh Orientasi Serat Dan Waktu Alkalisasi Pada Laminates Composite Polyester-Serat Bemban (Donax Canniformis) Terhadap Kekuatan Bending, Impact Dan Bentuk Patahan

Abstract

Plant Bemban (Donax canniformis) is one of the plants that is often found in the swamp area of South Kalimantan that grows wildly on the roadside and around the home garden. The purpose of this study is to find out how large the bending strength and composite impact is reinforced with bemban fiber with polyester matrix with variations in fiber orientation and alkalization time. The method is done by alkalizing the banana fiber with 4% NaOH solution with a variation of 30 minutes, 60 minutes and 90 minutes. The process of making composites with 3 layers varies the direction of fiber A (0°,45°,90°), B (45°,90°,0°), C (90°,45°,0°) and the method used is how to hand lay up. Broken photos after testing using macro photo observations. The results showed that the specimens with the highest immersion time of 30 minutes for bending with variations A (0°,45°,90°) of 112.24 MPa and the lowest at 60 minutes with variation C (90°,45°,0°) amounting to 12.67 MPa. Price impact (HI) is highest at 60 minutes immersion time with variations A (0°,45°,90°) of 0.0208 joule/mm2 and the lowest at 30 minutes immersion time with variation C (90°,45°,0°) of 0.0115 joules/mm2.

Effect of Volume Fraction hybrid composite duck feathers (Anas Plathycus Borneo) - Rat Purun Fiber (Eleocharis Dulcis) With Matrix Polyester On Tensile And Bending Strength

“…Figure 12 composite fault cross-section with a volume fraction of 10%: 90% is that the composite has the highest strength value with a bending strength value of 105.5 Mpa. At the volume fraction of 10%: 90% is still visible at some point, there is a pull-out failure shown in figure 4.6; in addition to the pull-out found in the composite that reduces the bending force, it turns out that after the implementation of different magnification, debonding is seen in the composite [19]. Debonding is the release of binding force between the fiber and the matrix.…”

Karakteristik Aspal Porus dengan Campuran Serat Bemban (Donax Canniformis) Terhadap Porositas, Void In Mixture, dan Marshall Quotient

“…Tumbuhan bemban dengan nama ilmiah Donax canniformis merupakan tumbuhan rumpun yang membentuk semak setinggi 1,5 -5 m. Bemban banyak ditemukan pada tepi-tepi air, tempat basah, atau juga hutan bambu dengan tumbuh secara liar [7]. Saat ini, bemban dimanfaatkan masyarakat sebagai bahan kerajinan tangan berupa anyaman dan tali [8].…”

“…Bemban telah banyak dimanfaatkan dalam bidang komposit. Komposit serat bemban memiliki ketahanan paling baik dibandingkan serat lain yaitu 0,0449 Joule/mm 2 terhadap uji impak [9], nilai impak dan bending yang cukup tinggi yakni 0,0208 Joule/mm 2 dan 114,16 Mpa [10]. Pemanfaatan komposit sebagai chopped fiber composite mendapatkan nilai energi serap 0,0653 J/mm 2 [11].…”

The Potential of Bemban Fiber as Raw Material of Geopolymer

“…Bemban (Donax Canniformis) is a plant that grows naturally in swamp regions with acidic peat soil structure [2,3]. These regions are commonly found on the borders of bodies of water, in damp areas, bamboo woodlands, and even in the yards of houses, producing little islands [4]. Bemban is currently employed by the community to manufacture woven and roped handcraft products.…”

“…The alkalization process can lower the lignin and hemicellulose content in the fiber, improving the bond between the fiber and the binder [4,11] Furthermore, alkalization attempts to break down cellulose crystals, enhance porosity, and reduce fiber size, all of which will promote contact between surfaces thereby improving mechanical characteristics [12]. Saputra et al [13] found that International Journal of GEOMATE, Dec., 2023 Vol.25, Issue 112, pp.…”