Purnomo, Hadi (2026) Analisis Variasi Waktu Perendaman Serat Bulu Ayam Dengan Naoh Terhadap Kekuatan Tarik Dan Kekuatan Impact Komposit Bermatrik Polyester. Undergraduate thesis, Politeknik Negeri Jember.
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Abstract
This study aims to analyze the effect of varying immersion durations of chicken feather fibers in Sodium Hydroxide (NaOH) solution on the mechanical properties of polyester matriks composites. The specimens were manufactured using the hand lay-up method with a constant volume fraction of 15% fiber and 85% polyester resin. The alkalization process was conducted using a 5% NaOH concentration with five duration variations: no immersion (control), 7.5 minutes, 15 minutes, 22.5 minutes, and 30 minutes. Mechanical evaluation of the material was performed through tensile and impact testing. The results indicated that the highest average tensile strength was achieved by specimens with a 7.5-minute immersion duration, reaching 31.98 N/mm², while the lowest value was found in the 30-minute duration at 19.214 N/mm². Consistent with these findings, the impact test also showed the highest strength at the 7.5-minute immersion duration with a value of 0.077 J/mm², whereas the lowest strength was recorded at the 30-minute duration at 0.008 J/mm². These phenomena suggest that a 7.5-minute immersion is the optimal duration for the alkalization process to enhance the interfacial bonding between the chicken feather fibers and the polyester matriks, while excessive immersion tends to degrade the fiber structure, thereby reducing the mechanical strength of the composite.
| Item Type: | Thesis (Undergraduate) | ||||||
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| Uncontrolled Keywords: | Komposit, Serat Bulu ayam ,Fraksi Volume, NaOH, Tarik, Impact. | ||||||
| Subjects: | 410 - Rumpun Ilmu Teknik > 430 - Ilmu Keteknikan Industri > 431 - Teknik Mesin (dan Ilmu Permesinan Lain) 410 - Rumpun Ilmu Teknik > 430 - Ilmu Keteknikan Industri > 432 - Teknik Produksi (dan Atau Manufakturing) 410 - Rumpun Ilmu Teknik > 430 - Ilmu Keteknikan Industri > 445 - Teknik Material (Ilmu Bahan) |
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| Divisions: | Jurusan Teknik > Prodi D4 Mesin Otomotif > Tugas Akhir | ||||||
| Depositing User: | Muhammad Hadi Purnomo | ||||||
| Date Deposited: | 29 Apr 2026 02:37 | ||||||
| Last Modified: | 29 Apr 2026 02:41 | ||||||
| URI: | https://sipora.polije.ac.id/id/eprint/55710 |
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