Fariqi, Hafiz Ikhwan and Dr. Putu Hadi Setyarini, ST., MT and Dr. Ir. Achmad As’ad Sonief, MT (2023) Karakterisasi Campuran PCL dan Graphite Pada Aplikasi Biodegradable Cable-Ties dengan Metode Injection Molding. Sarjana thesis, Universitas Brawijaya.
Abstract
Pada penelitian ini, diteliti komposit biodegradable untuk aplikasi cable ties pada lingkungan air laut. Pada lingkungan air laut cable ties sering digunakan pada aplikasi budidaya terumbu karang. Material yang digunakan adalah Polycaprolactone (PCL) karena memiliki sifat biodegradable dan sifat hidrofobisitasnya yang dapat ditingkatkan sesuai dengan aplikasinya. Sifat PCL dapat diperbaiki atau ditingkatkan dengan mencampurkan bahan pengisi berupa Graphite, karena karakter graphite yang hidrofobik. Komposit dibuat dengan dilakukan pencampuran Polycaprolactone (PCL) matrik dengan pengisi bubuk graphite (0%, 2%, 4%, 6%, 8%, 10% berat persentase). Proses pencampuran dilakukan dengan metode melt blending menggunakan mesin ekstrusi, dan spesimen dibuat dengan mesin injection molding. Proses ekstrusi dilakukan dengan suhu 70oC, dan untuk suhu injection molding dengan suhu 150oC. Spesimen dilakukan karakterisasi dengan pengujian water absorption, hidrofobisitas, FTIR, dan pengamatan morfologi dengan scanning electron microscope - energy dispersive x-ray spectroscopy (SEM-EDS). Identifikasi gugus fungsi senyawa PCL-Graphite dengan FTIR, menunjukan tidak ada perubahan signifikan gugus fungsi PCL. Uji water absorption menunjukan dengan penambahan pengisi menurunkan nilai persentase penyerapan air dan meningkatkan hidrobofik material. Ditunjukan juga pada uji hidrofobisitas dimana sudut yang terbentuk juga membesar. Dikonfirmasi pada pengamatan SEM yang menunjukan pengisi graphite tersebar merata dan mengisi celah pada matrik PCL.
English Abstract
In this study, biodegradable composites were investigated for cable ties applications in seawater environments. In seawater environments, cable ties are often used in coral reef cultivation applications. The material used is Polycaprolactone (PCL) because it has biodegradable properties and hydrophobicity which can be increased according to the application. The properties of PCL can be improved or enhanced by mixing a filler in the form of Graphite, because of graphite its hydrophobic character. Composites were made by mixing matrix Polycaprolactone (PCL) with graphite powder fillers (0%, 2%, 4%, 6%, 8%, 10% by weight percentage). The mixing process is carried out by the melt blending method using an extrusion machine, and the specimens are made by an injection molding machine. The extrusion process is carried out at 70oC, and for injection molding at 150oC. Specimens were characterized by testing for water absorption, hydrophobicity, FTIR, and morphological observations using a scanning electron microscope - energy dispersive x-ray spectroscopy (SEM-EDS). Identification of functional groups of PCL-Graphite compounds with FTIR, showed no significant changes in PCL functional groups. The water absorption test showed that the addition of fillers reduced the percentage value of water absorption and increased the hydrophobicity of the material. Also shown in the hydrophobicity test where the angle formed is also enlarged. Confirmed by SEM observations which show that the graphite filler is evenly distributed and fills the gaps in the PCL matrix.
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | '0523070115 |
| Uncontrolled Keywords: | PCL, Graphite, Injection molding, Water absorption, Contact angle, FTIR |
| Subjects: | 600 Technology (Applied sciences) > 621 Applied physics > 621.8 Machine engineering |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | Endang Susworini |
| Date Deposited: | 25 Jul 2023 04:11 |
| Last Modified: | 25 Jul 2023 04:11 |
| URI: | http://repository.ub.ac.id/id/eprint/202107 |
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