0817011010, Retno Dwi Palupi (2012) EKSTRAKSI SENYAWA TANIN DARI DAUN KETAPANG (Terminalia catappa L.) DAN UJI AKTIVITASNYA SEBAGAI INHIBITOR KOROSI. Digital Library.
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3. Abstract (English).pdf Download (10Kb) | Preview |
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4. Abstrak.pdf Download (9Kb) | Preview |
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5. Lembar Pengesahan.pdf Download (7Kb) | Preview |
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6. Lembar Pengesahan Mengesahkan.pdf Download (121Kb) | Preview |
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10. Sanwacana.pdf Download (143Kb) | Preview |
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14. Pendahuluan.pdf Download (89Kb) | Preview |
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Abstrak (Berisi Bastraknya saja, Judul dan Nama Tidak Boleh di Masukan)
Abstrak Pada penelitian ini telah dilakukan uji ekstrak tanin dari daun ketapang (Terminalia catappa) sebagai inhibitor korosi pada baja lunak (mild steel) dalam medium air laut buatan. Tahapan penelitian yang dilakukan meliputi pengumpulan dan persiapan sampel, ekstraksi, uji fitokimia tanin dengan menggunakan FeCl3 dan gelatin. Identifikasi tanin dilakukan menggunakan KLT dan spektrofotometer FTIR serta spektrofotometer ultraungu-tampak. Uji korosi dilakukan dengan dua cara, yaitu metode gravimetri dan metode potensiometri. Analisis morfologi permukaan baja terkorosi dan komposisi baja lunak dilakukan menggunakan SEM-EDS. Hasil penelitian menunjukkan bahwa berdasarkan uji fitokimia, identifikasi dengan KLT dan data spektrum FTIR serta ultraungutampak, senyawa hasil ekstraksi tersebut merupakan tanin. Analisis laju korosi dengan metode kehilangan berat menunjukkan bahwa inhibitor optimum pada konsentrasi 40% v/v pada paparan 3 hari, cukup efektif dalam menghambat proses korosi baja lunak dalam medium korosif dengan efisiensi inhibisi sebesar 60,87%, sedangkan analisis laju korosi dengan metode potensiometri menunjukkan bahwa inhibitor optimum pada konsentrasi 40% v/v pada paparan 10 menit, efektif dalam menghambat proses korosi baja lunak dalam medium korosif dengan efisiensi inhibisi sebesar 1,98%. Kata kunci : tanin, terminalia catappa, inhibitor korosi Abstract In this study, the tannins extract from ketapang leaves (Terminalia catappa) had been tested as a corrosion inhibitor of mild steel in synthetic brine solution with carbon dioxide saturated at room temperature. Stages of the study were : sample collection and preparation, extraction, phytochemical test of tannin using FeCl3 and gelatin. Tannins Identifications were performed using TLC, FTIR and ultraviolet-visible spectrophotometer. Corrosion test were carried out in two methodes, the gravimetric and potentiometric methods. Analysis of the surface morphology of corroded steel and mild steel compositions performed using SEMEDS. The results showed that the test based phytochemicals test, identification by using TLC, spectral data of FTIR and ultraviolet-visible, the extracted compound is tannin. Analysis of the corrosion by weight loss method showed that the optimum inhibitor concentration of 40% v/v in 3 days of exposure, is effective in inhibiting the process of mild steel corrosion in corrosive medium with inhibition efficiency of 60.87%, while the corrosion analysis with potentiometric method showed that the optimum inhibitor concentration of 40% v/v at 10 minutes of exposure, is also quite effective in inhibiting the corrosion of mild steel in the corrosive medium with inhibition efficiency of1.98%. Key words : tannin, terminalia catappa, corrosion inhibitor
| Jenis Karya Akhir: | Artikel |
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| Subyek: | |
| Program Studi: | FAKULTAS MIPA > Prodi Kimia |
| Pengguna Deposit: | IC-STAR . 2015 |
| Date Deposited: | 23 Nov 2015 06:00 |
| Terakhir diubah: | 23 Nov 2015 06:00 |
| URI: | http://digilib.unila.ac.id/id/eprint/14774 |
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