Imran, Bintang Pradana (2025) ANALISIS PENGARUH DIMENSI LIMBAH PLASTIK DAUR ULANG TERHADAP SIFAT MEKANIK PRODUK SENDOK PLASTIK MENGGUNAKAN MANUAL FORMING MACHINE. S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.
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Abstract
The increasing consumption of bottled drinking water has led to an accumulation of plastic waste, particularly from bottles made of polyethylene terephthalate (PET). This study aims to investigate the influence of the initial material thickness of recycled PET bottles, specifically 600 mL and 15 L sizes, on the mechanical properties of molded products in the form of plastic spoons produced using a manual forming machine. The recycling process involved washing, shredding, molding under specific pressure and temperature settings, and mechanical testing. The tests were conducted in accordance with ASTM D638 Type IV standards for Tensile testing and ISO 179-1 unnotched Charpy method for Impact testing. Tensile test results showed that Specimens from 15 L bottles (average thickness of 0.463 mm) reached a maximum tensile strength of up to 14.01 MPa and a total elongation of 0.778%, while Specimens from 600 mL bottles (thickness 0.146 mm) reached a maximum tensile strength of only 12.03 MPa with an elongation of 0.86%. In the Impact test, the highest toughness values were also achieved by the 15 L material, with more stable energy absorption. Overall, PET from 15 L bottles demonstrated superior and more consistent mechanical properties compared to PET from 600 mL bottles. These findings indicate that the thickness and initial quality of the material significantly affect the mechanical performance of recycled products.
| Item Type: | Thesis (S1) | |||||||||
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| Additional Information: | Peningkatan konsumsi air minum dalam kemasan telah menyebabkan akumulasi limbah plastik, terutama dari botol berbahan polyethylene terephthalate (PET). Penelitian ini bertujuan untuk mengkaji pengaruh ketebalan material awal dari limbah botol PET ukuran 600 mL dan 15 L terhadap sifat mekanik produk cetakan berupa sendok plastik yang dihasilkan menggunakan manual forming machine. Proses pengolahan limbah meliputi pencucian, pencacahan, pencetakan dengan tekanan dan temperatur tertentu, serta pengujian mekanis. Pengujian dilakukan menggunakan standar ASTM D638 Tipe IV untuk uji tarik dan ISO 179-1 metode unnotched Charpy untuk uji impak. Hasil uji tarik menunjukkan bahwa spesimen dari botol 15 L (ketebalan rata-rata 0,463 mm) memiliki nilai tegangan tarik maksimum hingga 14,01 MPa dan regangan total mencapai 0,778%, sedangkan spesimen dari botol 600 mL (ketebalan 0,146 mm) hanya mencapai tegangan maksimum 12,03 MPa dengan regangan 0,86%. Pada uji impak, nilai ketangguhan tertinggi juga dicapai oleh material 15 L dengan nilai energi serap yang lebih stabil. Secara keseluruhan, PET dari botol 15 L menunjukkan sifat mekanik yang lebih unggul dan konsisten dibandingkan dengan PET dari botol 600 mL. Hal ini mengindikasikan bahwa ketebalan dan kualitas awal material berpengaruh signifikan terhadap performa mekanik produk daur ulang. | |||||||||
| Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TS Manufactures |
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| Divisions: | 03-Fakultas Teknik 03-Fakultas Teknik > 21201-Jurusan Teknik Mesin |
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| Depositing User: | Bintang Bintang Imran | |||||||||
| Date Deposited: | 13 Aug 2025 06:03 | |||||||||
| Last Modified: | 13 Aug 2025 06:03 | |||||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/53810 |
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