Al As’ad, Naufal Firdaus (2019) Pengaruh Variasi Konsentrasi Perendaman NaOH Pada Anyaman Bambu Petung (Dendrocalamus asper) Terhadap Kekuatan Tarik Komposit Bermatrik Epoxy. Sarjana thesis, Universitas Brawijaya.
Abstract
Jumlah kendaraan yang sangat banyak pada saat ini menimbukan permasalahan serius ketika kendaraan – kendaraan tersebut habis usia paakainya. Kandungan material – material logam berat dikhawatirkan mencemari lingkungan di mana kendaraan tersebut dibuang. Hal ini membuat material komposit berpenguat serat alam menjadi salah satu solusi untuk mengurangi pencemaran lingkungan. Bambu Petung (Dendrocalamus asper) memiliki potensi yang sangat bagus untuk dijadikan sebagai material penguat pada komposit. Perpaduannya dengan matrik epoxy akan menghasilkan sebuah komposit yang kuat dan memiliki kestabilan dimensi yang baik. Penelitian ini menggunakan metode true experimental dengan memanfaatkan pengujian kekuatan tarik. Spesimen komposit yang diuji menggunakan standar ASTM D638-01. Anyaman Bambu Petung pada penelitian ini diperlakukan dengan tanpa perlakuan, perendaman NaOH dengan konsentrasi 3%, perendaman NaOH dengan konsentrasi 6%, dan perendaman NaOH dengan konsentrasi 9% selama 1 jam. Pembuatan komposit menggunakan metode Vacuum Assisted Resin Infusion. Hasil penelitian menunjukkan bahwa kekuatan tarik komposit tertinggi diperoleh dari spesimen komposit berpenguat anyaman Bambu Petung dengan perendaman NaOH 6% (136,06 MPa), kemudian berikutnya secara berturut – turut adalah : komposit berpenguat anyaman Bambu Petung dengan perendaman NaOH 3% (108,04 MPa), tanpa perlakuan (97,31 MPa), dan yang terendah adalah komposit dengan perendaman NaOH 9% (90,79 MPa). Perbedaan kekuatan tarik ini menunjukkan adanya perubahan sifat anyaman Bambu Petung akibat perendaman dengan larutan NaOH. Perendaman NaOH bertujuan untuk menghilangkan zat lignin dan lilin pada permukaan serat sehingga adhesi antara permukaan serat dan matrik epoksi semakin bagus. Namun penambahan konsentrasi NaOH lebih lanjut mampu mendegradasi serat lebih dalam sehingga pada titik tertentu kekuatan tarik komposit akan menurun akibat serat yang rapuh.
English Abstract
The high volume of vehicles nowadays leads to a serious problem when those vehicles exceed their lifetime. The metal materials contained in those vehicles are worried to pollute the environment in which the vehicles are discarded. This condition makes natural fiber-reinforced composite material become one of the effective solutions to reduce environmental pollution. Natural fiber that potentially can be used as reinforcement in composite is Petung Bamboo (Dendrocalamus asper) fiber. The combination of woven Petung Bamboo fiber with epoxy matrix will produces composite material which is strong and has good dimensional stability. This research employed true experimental method. Tensile strength testing was conducted in this experiment. The standard of tensile strength test for composite specimens is based on ASTM D638-01. The reinforcement (woven Petung Bamboo fiber) was treated by various treatment, they were : untreated and by soaking it into NaOH solution with 3%, 6%, and 9% concentration for 1 hour. The composite specimens were made by using vacuum assisted resin infusion method. The results showed that the highest tensile strength was achieved by specimen of woven Petung Bamboo fiber-reinforced composite with treatment of 6% concentration of NaOH solution and followed by : woven Petung Bamboo fiber-reinforced composite with treatment of 3% concentration of NaOH solution, woven Petung Bamboo fiber-reinforced composite without NaOH treatment, and woven Petung Bamboo fiber-reinforced composite with treatment of 9% concentration of NaOH solution respectively. The different tensile strength of the specimens of each treatment proves that NaOH solution treatment change the properties of woven Petung Bamboo fiber. NaOH solution treatment is used to remove lignin and wax substances on the woven fiber surfaces so that the adhesion between fiber surface and the epoxy matrix is improved. But, further addition of NaOH concentration can deeply degrades the fiber so that at certain higher concentration of NaOH solution for fiber treatment, the strength of the composite specimen will decrease due to fragile fibers.
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FT/2019/90/051904570 |
| Uncontrolled Keywords: | Bambu Petung, Komposit, Kekuatan Tarik, NaOH, Woven Petung Bamboo fiber, Composite, Tensile Strength, NaOH solution |
| Subjects: | 600 Technology (Applied sciences) > 620 Engineering and allied operations > 620.1 Engineering mechanics and materials > 620.11 Engineering materials > 620.118 Composite materials > 620.118 028 7 Composite materials--Testing |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 17 Nov 2020 17:23 |
| Last Modified: | 17 Nov 2020 17:23 |
| URI: | http://repository.ub.ac.id/id/eprint/173311 |
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